mirror of https://gitee.com/openkylin/linux.git
1626 lines
33 KiB
C
1626 lines
33 KiB
C
/*
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* Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <mach/clock.h>
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#include <mach/common.h>
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#include <asm/div64.h>
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#include "crm_regs.h"
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static struct clk ckil_clk;
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static struct clk mpll_clk;
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static struct clk mpll_main_clk[];
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static struct clk spll_clk;
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static int _clk_enable(struct clk *clk)
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{
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unsigned long reg;
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reg = __raw_readl(clk->enable_reg);
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reg |= 1 << clk->enable_shift;
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__raw_writel(reg, clk->enable_reg);
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return 0;
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}
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static void _clk_disable(struct clk *clk)
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{
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unsigned long reg;
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reg = __raw_readl(clk->enable_reg);
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reg &= ~(1 << clk->enable_shift);
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__raw_writel(reg, clk->enable_reg);
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}
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static int _clk_spll_enable(struct clk *clk)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_CSCR);
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reg |= CCM_CSCR_SPEN;
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__raw_writel(reg, CCM_CSCR);
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while ((__raw_readl(CCM_SPCTL1) & CCM_SPCTL1_LF) == 0)
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;
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return 0;
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}
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static void _clk_spll_disable(struct clk *clk)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_CSCR);
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reg &= ~CCM_CSCR_SPEN;
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__raw_writel(reg, CCM_CSCR);
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}
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static void _clk_pccr01_enable(unsigned long mask0, unsigned long mask1)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_PCCR0);
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reg |= mask0;
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__raw_writel(reg, CCM_PCCR0);
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reg = __raw_readl(CCM_PCCR1);
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reg |= mask1;
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__raw_writel(reg, CCM_PCCR1);
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}
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static void _clk_pccr01_disable(unsigned long mask0, unsigned long mask1)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_PCCR0);
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reg &= ~mask0;
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__raw_writel(reg, CCM_PCCR0);
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reg = __raw_readl(CCM_PCCR1);
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reg &= ~mask1;
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__raw_writel(reg, CCM_PCCR1);
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}
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static void _clk_pccr10_enable(unsigned long mask1, unsigned long mask0)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_PCCR1);
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reg |= mask1;
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__raw_writel(reg, CCM_PCCR1);
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reg = __raw_readl(CCM_PCCR0);
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reg |= mask0;
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__raw_writel(reg, CCM_PCCR0);
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}
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static void _clk_pccr10_disable(unsigned long mask1, unsigned long mask0)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_PCCR1);
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reg &= ~mask1;
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__raw_writel(reg, CCM_PCCR1);
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reg = __raw_readl(CCM_PCCR0);
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reg &= ~mask0;
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__raw_writel(reg, CCM_PCCR0);
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}
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static int _clk_dma_enable(struct clk *clk)
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{
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_clk_pccr01_enable(CCM_PCCR0_DMA_MASK, CCM_PCCR1_HCLK_DMA_MASK);
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return 0;
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}
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static void _clk_dma_disable(struct clk *clk)
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{
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_clk_pccr01_disable(CCM_PCCR0_DMA_MASK, CCM_PCCR1_HCLK_DMA_MASK);
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}
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static int _clk_rtic_enable(struct clk *clk)
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{
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_clk_pccr01_enable(CCM_PCCR0_RTIC_MASK, CCM_PCCR1_HCLK_RTIC_MASK);
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return 0;
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}
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static void _clk_rtic_disable(struct clk *clk)
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{
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_clk_pccr01_disable(CCM_PCCR0_RTIC_MASK, CCM_PCCR1_HCLK_RTIC_MASK);
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}
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static int _clk_emma_enable(struct clk *clk)
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{
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_clk_pccr01_enable(CCM_PCCR0_EMMA_MASK, CCM_PCCR1_HCLK_EMMA_MASK);
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return 0;
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}
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static void _clk_emma_disable(struct clk *clk)
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{
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_clk_pccr01_disable(CCM_PCCR0_EMMA_MASK, CCM_PCCR1_HCLK_EMMA_MASK);
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}
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static int _clk_slcdc_enable(struct clk *clk)
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{
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_clk_pccr01_enable(CCM_PCCR0_SLCDC_MASK, CCM_PCCR1_HCLK_SLCDC_MASK);
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return 0;
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}
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static void _clk_slcdc_disable(struct clk *clk)
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{
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_clk_pccr01_disable(CCM_PCCR0_SLCDC_MASK, CCM_PCCR1_HCLK_SLCDC_MASK);
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}
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static int _clk_fec_enable(struct clk *clk)
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{
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_clk_pccr01_enable(CCM_PCCR0_FEC_MASK, CCM_PCCR1_HCLK_FEC_MASK);
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return 0;
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}
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static void _clk_fec_disable(struct clk *clk)
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{
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_clk_pccr01_disable(CCM_PCCR0_FEC_MASK, CCM_PCCR1_HCLK_FEC_MASK);
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}
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static int _clk_vpu_enable(struct clk *clk)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_PCCR1);
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reg |= CCM_PCCR1_VPU_BAUD_MASK | CCM_PCCR1_HCLK_VPU_MASK;
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__raw_writel(reg, CCM_PCCR1);
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return 0;
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}
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static void _clk_vpu_disable(struct clk *clk)
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{
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unsigned long reg;
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reg = __raw_readl(CCM_PCCR1);
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reg &= ~(CCM_PCCR1_VPU_BAUD_MASK | CCM_PCCR1_HCLK_VPU_MASK);
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__raw_writel(reg, CCM_PCCR1);
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}
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static int _clk_sahara2_enable(struct clk *clk)
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{
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_clk_pccr01_enable(CCM_PCCR0_SAHARA_MASK, CCM_PCCR1_HCLK_SAHARA_MASK);
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return 0;
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}
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static void _clk_sahara2_disable(struct clk *clk)
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{
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_clk_pccr01_disable(CCM_PCCR0_SAHARA_MASK, CCM_PCCR1_HCLK_SAHARA_MASK);
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}
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static int _clk_mstick1_enable(struct clk *clk)
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{
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_clk_pccr10_enable(CCM_PCCR1_MSHC_BAUD_MASK, CCM_PCCR0_MSHC_MASK);
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return 0;
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}
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static void _clk_mstick1_disable(struct clk *clk)
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{
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_clk_pccr10_disable(CCM_PCCR1_MSHC_BAUD_MASK, CCM_PCCR0_MSHC_MASK);
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}
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#define CSCR() (__raw_readl(CCM_CSCR))
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#define PCDR0() (__raw_readl(CCM_PCDR0))
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#define PCDR1() (__raw_readl(CCM_PCDR1))
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static int _clk_cpu_set_parent(struct clk *clk, struct clk *parent)
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{
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int cscr = CSCR();
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if (clk->parent == parent)
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return 0;
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if (mx27_revision() >= CHIP_REV_2_0) {
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if (parent == &mpll_main_clk[0]) {
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cscr |= CCM_CSCR_ARM_SRC;
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} else {
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if (parent == &mpll_main_clk[1])
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cscr &= ~CCM_CSCR_ARM_SRC;
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else
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return -EINVAL;
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}
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__raw_writel(cscr, CCM_CSCR);
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} else
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return -ENODEV;
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clk->parent = parent;
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return 0;
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}
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static unsigned long _clk_cpu_round_rate(struct clk *clk, unsigned long rate)
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{
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int div;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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div = parent_rate / rate;
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if (parent_rate % rate)
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div++;
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if (div > 4)
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div = 4;
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return parent_rate / div;
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}
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static int _clk_cpu_set_rate(struct clk *clk, unsigned long rate)
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{
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unsigned int div;
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uint32_t reg;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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div = parent_rate / rate;
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if (div > 4 || div < 1 || ((parent_rate / div) != rate))
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return -EINVAL;
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div--;
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reg = __raw_readl(CCM_CSCR);
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if (mx27_revision() >= CHIP_REV_2_0) {
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reg &= ~CCM_CSCR_ARM_MASK;
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reg |= div << CCM_CSCR_ARM_OFFSET;
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reg &= ~0x06;
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__raw_writel(reg | 0x80000000, CCM_CSCR);
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} else {
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printk(KERN_ERR "Cant set CPU frequency!\n");
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}
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return 0;
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}
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static unsigned long _clk_perclkx_round_rate(struct clk *clk,
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unsigned long rate)
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{
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u32 div;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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div = parent_rate / rate;
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if (parent_rate % rate)
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div++;
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if (div > 64)
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div = 64;
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return parent_rate / div;
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}
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static int _clk_perclkx_set_rate(struct clk *clk, unsigned long rate)
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{
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u32 reg;
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u32 div;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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if (clk->id < 0 || clk->id > 3)
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return -EINVAL;
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div = parent_rate / rate;
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if (div > 64 || div < 1 || ((parent_rate / div) != rate))
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return -EINVAL;
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div--;
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reg =
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__raw_readl(CCM_PCDR1) & ~(CCM_PCDR1_PERDIV1_MASK <<
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(clk->id << 3));
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reg |= div << (clk->id << 3);
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__raw_writel(reg, CCM_PCDR1);
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return 0;
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}
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static unsigned long _clk_usb_recalc(struct clk *clk)
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{
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unsigned long usb_pdf;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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usb_pdf = (CSCR() & CCM_CSCR_USB_MASK) >> CCM_CSCR_USB_OFFSET;
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return parent_rate / (usb_pdf + 1U);
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}
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static unsigned long _clk_ssi1_recalc(struct clk *clk)
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{
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unsigned long ssi1_pdf;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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ssi1_pdf = (PCDR0() & CCM_PCDR0_SSI1BAUDDIV_MASK) >>
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CCM_PCDR0_SSI1BAUDDIV_OFFSET;
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if (mx27_revision() >= CHIP_REV_2_0)
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ssi1_pdf += 4;
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else
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ssi1_pdf = (ssi1_pdf < 2) ? 124UL : ssi1_pdf;
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return 2UL * parent_rate / ssi1_pdf;
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}
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static unsigned long _clk_ssi2_recalc(struct clk *clk)
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{
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unsigned long ssi2_pdf;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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ssi2_pdf = (PCDR0() & CCM_PCDR0_SSI2BAUDDIV_MASK) >>
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CCM_PCDR0_SSI2BAUDDIV_OFFSET;
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if (mx27_revision() >= CHIP_REV_2_0)
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ssi2_pdf += 4;
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else
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ssi2_pdf = (ssi2_pdf < 2) ? 124UL : ssi2_pdf;
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return 2UL * parent_rate / ssi2_pdf;
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}
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static unsigned long _clk_nfc_recalc(struct clk *clk)
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{
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unsigned long nfc_pdf;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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if (mx27_revision() >= CHIP_REV_2_0) {
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nfc_pdf =
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(PCDR0() & CCM_PCDR0_NFCDIV2_MASK) >>
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CCM_PCDR0_NFCDIV2_OFFSET;
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} else {
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nfc_pdf =
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(PCDR0() & CCM_PCDR0_NFCDIV_MASK) >>
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CCM_PCDR0_NFCDIV_OFFSET;
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}
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return parent_rate / (nfc_pdf + 1);
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}
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static unsigned long _clk_vpu_recalc(struct clk *clk)
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{
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unsigned long vpu_pdf;
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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if (mx27_revision() >= CHIP_REV_2_0) {
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vpu_pdf =
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(PCDR0() & CCM_PCDR0_VPUDIV2_MASK) >>
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CCM_PCDR0_VPUDIV2_OFFSET;
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vpu_pdf += 4;
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} else {
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vpu_pdf =
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(PCDR0() & CCM_PCDR0_VPUDIV_MASK) >>
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CCM_PCDR0_VPUDIV_OFFSET;
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vpu_pdf = (vpu_pdf < 2) ? 124 : vpu_pdf;
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}
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return 2UL * parent_rate / vpu_pdf;
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}
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static unsigned long _clk_parent_round_rate(struct clk *clk, unsigned long rate)
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{
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return clk->parent->round_rate(clk->parent, rate);
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}
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static int _clk_parent_set_rate(struct clk *clk, unsigned long rate)
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{
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return clk->parent->set_rate(clk->parent, rate);
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}
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/* in Hz */
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static unsigned long external_high_reference = 26000000;
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static unsigned long get_high_reference_clock_rate(struct clk *clk)
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{
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return external_high_reference;
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}
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/*
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* the high frequency external clock reference
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* Default case is 26MHz. Could be changed at runtime
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* with a call to change_external_high_reference()
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*/
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static struct clk ckih_clk = {
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.name = "ckih",
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.get_rate = get_high_reference_clock_rate,
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};
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/* in Hz */
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static unsigned long external_low_reference = 32768;
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static unsigned long get_low_reference_clock_rate(struct clk *clk)
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{
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return external_low_reference;
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}
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/*
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* the low frequency external clock reference
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* Default case is 32.768kHz Could be changed at runtime
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* with a call to change_external_low_reference()
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*/
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static struct clk ckil_clk = {
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.name = "ckil",
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.get_rate = get_low_reference_clock_rate,
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};
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static unsigned long get_mpll_clk(struct clk *clk)
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{
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uint32_t reg;
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unsigned long ref_clk;
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unsigned long mfi = 0, mfn = 0, mfd = 0, pdf = 0;
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unsigned long long temp;
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ref_clk = clk_get_rate(clk->parent);
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reg = __raw_readl(CCM_MPCTL0);
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pdf = (reg & CCM_MPCTL0_PD_MASK) >> CCM_MPCTL0_PD_OFFSET;
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mfd = (reg & CCM_MPCTL0_MFD_MASK) >> CCM_MPCTL0_MFD_OFFSET;
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mfi = (reg & CCM_MPCTL0_MFI_MASK) >> CCM_MPCTL0_MFI_OFFSET;
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mfn = (reg & CCM_MPCTL0_MFN_MASK) >> CCM_MPCTL0_MFN_OFFSET;
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mfi = (mfi <= 5) ? 5 : mfi;
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temp = 2LL * ref_clk * mfn;
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do_div(temp, mfd + 1);
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temp = 2LL * ref_clk * mfi + temp;
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do_div(temp, pdf + 1);
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return (unsigned long)temp;
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}
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static struct clk mpll_clk = {
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.name = "mpll",
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.parent = &ckih_clk,
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.get_rate = get_mpll_clk,
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};
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static unsigned long _clk_mpll_main_get_rate(struct clk *clk)
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{
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unsigned long parent_rate;
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parent_rate = clk_get_rate(clk->parent);
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/* i.MX27 TO2:
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* clk->id == 0: arm clock source path 1 which is from 2*MPLL/DIV_2
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* clk->id == 1: arm clock source path 2 which is from 2*MPLL/DIV_3
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*/
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|
|
if (mx27_revision() >= CHIP_REV_2_0 && clk->id == 1)
|
|
return 2UL * parent_rate / 3UL;
|
|
|
|
return parent_rate;
|
|
}
|
|
|
|
static struct clk mpll_main_clk[] = {
|
|
{
|
|
/* For i.MX27 TO2, it is the MPLL path 1 of ARM core
|
|
* It provide the clock source whose rate is same as MPLL
|
|
*/
|
|
.name = "mpll_main",
|
|
.id = 0,
|
|
.parent = &mpll_clk,
|
|
.get_rate = _clk_mpll_main_get_rate
|
|
}, {
|
|
/* For i.MX27 TO2, it is the MPLL path 2 of ARM core
|
|
* It provide the clock source whose rate is same MPLL * 2/3
|
|
*/
|
|
.name = "mpll_main",
|
|
.id = 1,
|
|
.parent = &mpll_clk,
|
|
.get_rate = _clk_mpll_main_get_rate
|
|
}
|
|
};
|
|
|
|
static unsigned long get_spll_clk(struct clk *clk)
|
|
{
|
|
uint32_t reg;
|
|
unsigned long ref_clk;
|
|
unsigned long mfi = 0, mfn = 0, mfd = 0, pdf = 0;
|
|
unsigned long long temp;
|
|
|
|
ref_clk = clk_get_rate(clk->parent);
|
|
|
|
reg = __raw_readl(CCM_SPCTL0);
|
|
/*TODO: This is TO2 Bug */
|
|
if (mx27_revision() >= CHIP_REV_2_0)
|
|
__raw_writel(reg, CCM_SPCTL0);
|
|
|
|
pdf = (reg & CCM_SPCTL0_PD_MASK) >> CCM_SPCTL0_PD_OFFSET;
|
|
mfd = (reg & CCM_SPCTL0_MFD_MASK) >> CCM_SPCTL0_MFD_OFFSET;
|
|
mfi = (reg & CCM_SPCTL0_MFI_MASK) >> CCM_SPCTL0_MFI_OFFSET;
|
|
mfn = (reg & CCM_SPCTL0_MFN_MASK) >> CCM_SPCTL0_MFN_OFFSET;
|
|
|
|
mfi = (mfi <= 5) ? 5 : mfi;
|
|
temp = 2LL * ref_clk * mfn;
|
|
do_div(temp, mfd + 1);
|
|
temp = 2LL * ref_clk * mfi + temp;
|
|
do_div(temp, pdf + 1);
|
|
|
|
return (unsigned long)temp;
|
|
}
|
|
|
|
static struct clk spll_clk = {
|
|
.name = "spll",
|
|
.parent = &ckih_clk,
|
|
.get_rate = get_spll_clk,
|
|
.enable = _clk_spll_enable,
|
|
.disable = _clk_spll_disable,
|
|
};
|
|
|
|
static unsigned long get_cpu_clk(struct clk *clk)
|
|
{
|
|
u32 div;
|
|
unsigned long rate;
|
|
|
|
if (mx27_revision() >= CHIP_REV_2_0)
|
|
div = (CSCR() & CCM_CSCR_ARM_MASK) >> CCM_CSCR_ARM_OFFSET;
|
|
else
|
|
div = (CSCR() & CCM_CSCR_PRESC_MASK) >> CCM_CSCR_PRESC_OFFSET;
|
|
|
|
rate = clk_get_rate(clk->parent);
|
|
return rate / (div + 1);
|
|
}
|
|
|
|
static struct clk cpu_clk = {
|
|
.name = "cpu_clk",
|
|
.parent = &mpll_main_clk[1],
|
|
.set_parent = _clk_cpu_set_parent,
|
|
.round_rate = _clk_cpu_round_rate,
|
|
.get_rate = get_cpu_clk,
|
|
.set_rate = _clk_cpu_set_rate,
|
|
};
|
|
|
|
static unsigned long get_ahb_clk(struct clk *clk)
|
|
{
|
|
unsigned long rate;
|
|
unsigned long bclk_pdf;
|
|
|
|
if (mx27_revision() >= CHIP_REV_2_0)
|
|
bclk_pdf = (CSCR() & CCM_CSCR_AHB_MASK)
|
|
>> CCM_CSCR_AHB_OFFSET;
|
|
else
|
|
bclk_pdf = (CSCR() & CCM_CSCR_BCLK_MASK)
|
|
>> CCM_CSCR_BCLK_OFFSET;
|
|
|
|
rate = clk_get_rate(clk->parent);
|
|
return rate / (bclk_pdf + 1);
|
|
}
|
|
|
|
static struct clk ahb_clk = {
|
|
.name = "ahb_clk",
|
|
.parent = &mpll_main_clk[1],
|
|
.get_rate = get_ahb_clk,
|
|
};
|
|
|
|
static unsigned long get_ipg_clk(struct clk *clk)
|
|
{
|
|
unsigned long rate;
|
|
unsigned long ipg_pdf;
|
|
|
|
if (mx27_revision() >= CHIP_REV_2_0)
|
|
return clk_get_rate(clk->parent);
|
|
else
|
|
ipg_pdf = (CSCR() & CCM_CSCR_IPDIV) >> CCM_CSCR_IPDIV_OFFSET;
|
|
|
|
rate = clk_get_rate(clk->parent);
|
|
return rate / (ipg_pdf + 1);
|
|
}
|
|
|
|
static struct clk ipg_clk = {
|
|
.name = "ipg_clk",
|
|
.parent = &ahb_clk,
|
|
.get_rate = get_ipg_clk,
|
|
};
|
|
|
|
static unsigned long _clk_perclkx_recalc(struct clk *clk)
|
|
{
|
|
unsigned long perclk_pdf;
|
|
unsigned long parent_rate;
|
|
|
|
parent_rate = clk_get_rate(clk->parent);
|
|
|
|
if (clk->id < 0 || clk->id > 3)
|
|
return 0;
|
|
|
|
perclk_pdf = (PCDR1() >> (clk->id << 3)) & CCM_PCDR1_PERDIV1_MASK;
|
|
|
|
return parent_rate / (perclk_pdf + 1);
|
|
}
|
|
|
|
static struct clk per_clk[] = {
|
|
{
|
|
.name = "per_clk",
|
|
.id = 0,
|
|
.parent = &mpll_main_clk[1],
|
|
.get_rate = _clk_perclkx_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_PERCLK1_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "per_clk",
|
|
.id = 1,
|
|
.parent = &mpll_main_clk[1],
|
|
.get_rate = _clk_perclkx_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_PERCLK2_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "per_clk",
|
|
.id = 2,
|
|
.parent = &mpll_main_clk[1],
|
|
.round_rate = _clk_perclkx_round_rate,
|
|
.set_rate = _clk_perclkx_set_rate,
|
|
.get_rate = _clk_perclkx_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_PERCLK3_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "per_clk",
|
|
.id = 3,
|
|
.parent = &mpll_main_clk[1],
|
|
.round_rate = _clk_perclkx_round_rate,
|
|
.set_rate = _clk_perclkx_set_rate,
|
|
.get_rate = _clk_perclkx_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_PERCLK4_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
struct clk uart1_clk[] = {
|
|
{
|
|
.name = "uart_clk",
|
|
.id = 0,
|
|
.parent = &per_clk[0],
|
|
.secondary = &uart1_clk[1],
|
|
}, {
|
|
.name = "uart_ipg_clk",
|
|
.id = 0,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_UART1_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
struct clk uart2_clk[] = {
|
|
{
|
|
.name = "uart_clk",
|
|
.id = 1,
|
|
.parent = &per_clk[0],
|
|
.secondary = &uart2_clk[1],
|
|
}, {
|
|
.name = "uart_ipg_clk",
|
|
.id = 1,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_UART2_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
struct clk uart3_clk[] = {
|
|
{
|
|
.name = "uart_clk",
|
|
.id = 2,
|
|
.parent = &per_clk[0],
|
|
.secondary = &uart3_clk[1],
|
|
}, {
|
|
.name = "uart_ipg_clk",
|
|
.id = 2,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_UART3_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
struct clk uart4_clk[] = {
|
|
{
|
|
.name = "uart_clk",
|
|
.id = 3,
|
|
.parent = &per_clk[0],
|
|
.secondary = &uart4_clk[1],
|
|
}, {
|
|
.name = "uart_ipg_clk",
|
|
.id = 3,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_UART4_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
struct clk uart5_clk[] = {
|
|
{
|
|
.name = "uart_clk",
|
|
.id = 4,
|
|
.parent = &per_clk[0],
|
|
.secondary = &uart5_clk[1],
|
|
}, {
|
|
.name = "uart_ipg_clk",
|
|
.id = 4,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_UART5_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
struct clk uart6_clk[] = {
|
|
{
|
|
.name = "uart_clk",
|
|
.id = 5,
|
|
.parent = &per_clk[0],
|
|
.secondary = &uart6_clk[1],
|
|
}, {
|
|
.name = "uart_ipg_clk",
|
|
.id = 5,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_UART6_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk gpt1_clk[] = {
|
|
{
|
|
.name = "gpt_clk",
|
|
.id = 0,
|
|
.parent = &per_clk[0],
|
|
.secondary = &gpt1_clk[1],
|
|
}, {
|
|
.name = "gpt_ipg_clk",
|
|
.id = 0,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_GPT1_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk gpt2_clk[] = {
|
|
{
|
|
.name = "gpt_clk",
|
|
.id = 1,
|
|
.parent = &per_clk[0],
|
|
.secondary = &gpt2_clk[1],
|
|
}, {
|
|
.name = "gpt_ipg_clk",
|
|
.id = 1,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_GPT2_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk gpt3_clk[] = {
|
|
{
|
|
.name = "gpt_clk",
|
|
.id = 2,
|
|
.parent = &per_clk[0],
|
|
.secondary = &gpt3_clk[1],
|
|
}, {
|
|
.name = "gpt_ipg_clk",
|
|
.id = 2,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_GPT3_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk gpt4_clk[] = {
|
|
{
|
|
.name = "gpt_clk",
|
|
.id = 3,
|
|
.parent = &per_clk[0],
|
|
.secondary = &gpt4_clk[1],
|
|
}, {
|
|
.name = "gpt_ipg_clk",
|
|
.id = 3,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_GPT4_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk gpt5_clk[] = {
|
|
{
|
|
.name = "gpt_clk",
|
|
.id = 4,
|
|
.parent = &per_clk[0],
|
|
.secondary = &gpt5_clk[1],
|
|
}, {
|
|
.name = "gpt_ipg_clk",
|
|
.id = 4,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_GPT5_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk gpt6_clk[] = {
|
|
{
|
|
.name = "gpt_clk",
|
|
.id = 5,
|
|
.parent = &per_clk[0],
|
|
.secondary = &gpt6_clk[1],
|
|
}, {
|
|
.name = "gpt_ipg_clk",
|
|
.id = 5,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_GPT6_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk pwm_clk[] = {
|
|
{
|
|
.name = "pwm_clk",
|
|
.parent = &per_clk[0],
|
|
.secondary = &pwm_clk[1],
|
|
}, {
|
|
.name = "pwm_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_PWM_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk sdhc1_clk[] = {
|
|
{
|
|
.name = "sdhc_clk",
|
|
.id = 0,
|
|
.parent = &per_clk[1],
|
|
.secondary = &sdhc1_clk[1],
|
|
}, {
|
|
.name = "sdhc_ipg_clk",
|
|
.id = 0,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_SDHC1_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk sdhc2_clk[] = {
|
|
{
|
|
.name = "sdhc_clk",
|
|
.id = 1,
|
|
.parent = &per_clk[1],
|
|
.secondary = &sdhc2_clk[1],
|
|
}, {
|
|
.name = "sdhc_ipg_clk",
|
|
.id = 1,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_SDHC2_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk sdhc3_clk[] = {
|
|
{
|
|
.name = "sdhc_clk",
|
|
.id = 2,
|
|
.parent = &per_clk[1],
|
|
.secondary = &sdhc3_clk[1],
|
|
}, {
|
|
.name = "sdhc_ipg_clk",
|
|
.id = 2,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_SDHC3_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk cspi1_clk[] = {
|
|
{
|
|
.name = "cspi_clk",
|
|
.id = 0,
|
|
.parent = &per_clk[1],
|
|
.secondary = &cspi1_clk[1],
|
|
}, {
|
|
.name = "cspi_ipg_clk",
|
|
.id = 0,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_CSPI1_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk cspi2_clk[] = {
|
|
{
|
|
.name = "cspi_clk",
|
|
.id = 1,
|
|
.parent = &per_clk[1],
|
|
.secondary = &cspi2_clk[1],
|
|
}, {
|
|
.name = "cspi_ipg_clk",
|
|
.id = 1,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_CSPI2_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk cspi3_clk[] = {
|
|
{
|
|
.name = "cspi_clk",
|
|
.id = 2,
|
|
.parent = &per_clk[1],
|
|
.secondary = &cspi3_clk[1],
|
|
}, {
|
|
.name = "cspi_ipg_clk",
|
|
.id = 2,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_CSPI3_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk lcdc_clk[] = {
|
|
{
|
|
.name = "lcdc_clk",
|
|
.parent = &per_clk[2],
|
|
.secondary = &lcdc_clk[1],
|
|
.round_rate = _clk_parent_round_rate,
|
|
.set_rate = _clk_parent_set_rate,
|
|
}, {
|
|
.name = "lcdc_ipg_clk",
|
|
.parent = &ipg_clk,
|
|
.secondary = &lcdc_clk[2],
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_LCDC_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "lcdc_ahb_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_HCLK_LCDC_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk csi_clk[] = {
|
|
{
|
|
.name = "csi_perclk",
|
|
.parent = &per_clk[3],
|
|
.secondary = &csi_clk[1],
|
|
.round_rate = _clk_parent_round_rate,
|
|
.set_rate = _clk_parent_set_rate,
|
|
}, {
|
|
.name = "csi_ahb_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_HCLK_CSI_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk usb_clk[] = {
|
|
{
|
|
.name = "usb_clk",
|
|
.parent = &spll_clk,
|
|
.get_rate = _clk_usb_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_USBOTG_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "usb_ahb_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_HCLK_USBOTG_OFFSET,
|
|
.disable = _clk_disable,
|
|
}
|
|
};
|
|
|
|
static struct clk ssi1_clk[] = {
|
|
{
|
|
.name = "ssi_clk",
|
|
.id = 0,
|
|
.parent = &mpll_main_clk[1],
|
|
.secondary = &ssi1_clk[1],
|
|
.get_rate = _clk_ssi1_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_SSI1_BAUD_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "ssi_ipg_clk",
|
|
.id = 0,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_SSI1_IPG_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk ssi2_clk[] = {
|
|
{
|
|
.name = "ssi_clk",
|
|
.id = 1,
|
|
.parent = &mpll_main_clk[1],
|
|
.secondary = &ssi2_clk[1],
|
|
.get_rate = _clk_ssi2_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_SSI2_BAUD_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "ssi_ipg_clk",
|
|
.id = 1,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_SSI2_IPG_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk nfc_clk = {
|
|
.name = "nfc_clk",
|
|
.parent = &cpu_clk,
|
|
.get_rate = _clk_nfc_recalc,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_NFC_BAUD_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk vpu_clk = {
|
|
.name = "vpu_clk",
|
|
.parent = &mpll_main_clk[1],
|
|
.get_rate = _clk_vpu_recalc,
|
|
.enable = _clk_vpu_enable,
|
|
.disable = _clk_vpu_disable,
|
|
};
|
|
|
|
static struct clk dma_clk = {
|
|
.name = "dma_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_dma_enable,
|
|
.disable = _clk_dma_disable,
|
|
};
|
|
|
|
static struct clk rtic_clk = {
|
|
.name = "rtic_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_rtic_enable,
|
|
.disable = _clk_rtic_disable,
|
|
};
|
|
|
|
static struct clk brom_clk = {
|
|
.name = "brom_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_HCLK_BROM_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk emma_clk = {
|
|
.name = "emma_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_emma_enable,
|
|
.disable = _clk_emma_disable,
|
|
};
|
|
|
|
static struct clk slcdc_clk = {
|
|
.name = "slcdc_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_slcdc_enable,
|
|
.disable = _clk_slcdc_disable,
|
|
};
|
|
|
|
static struct clk fec_clk = {
|
|
.name = "fec_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_fec_enable,
|
|
.disable = _clk_fec_disable,
|
|
};
|
|
|
|
static struct clk emi_clk = {
|
|
.name = "emi_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_HCLK_EMI_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk sahara2_clk = {
|
|
.name = "sahara_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_sahara2_enable,
|
|
.disable = _clk_sahara2_disable,
|
|
};
|
|
|
|
static struct clk ata_clk = {
|
|
.name = "ata_clk",
|
|
.parent = &ahb_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_HCLK_ATA_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk mstick1_clk = {
|
|
.name = "mstick1_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_mstick1_enable,
|
|
.disable = _clk_mstick1_disable,
|
|
};
|
|
|
|
static struct clk wdog_clk = {
|
|
.name = "wdog_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR1_WDT_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk gpio_clk = {
|
|
.name = "gpio_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR1,
|
|
.enable_shift = CCM_PCCR0_GPIO_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk i2c_clk[] = {
|
|
{
|
|
.name = "i2c_clk",
|
|
.id = 0,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_I2C1_OFFSET,
|
|
.disable = _clk_disable,
|
|
}, {
|
|
.name = "i2c_clk",
|
|
.id = 1,
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_I2C2_OFFSET,
|
|
.disable = _clk_disable,
|
|
},
|
|
};
|
|
|
|
static struct clk iim_clk = {
|
|
.name = "iim_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_IIM_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk kpp_clk = {
|
|
.name = "kpp_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_KPP_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk owire_clk = {
|
|
.name = "owire_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_OWIRE_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk rtc_clk = {
|
|
.name = "rtc_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_RTC_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static struct clk scc_clk = {
|
|
.name = "scc_clk",
|
|
.parent = &ipg_clk,
|
|
.enable = _clk_enable,
|
|
.enable_reg = CCM_PCCR0,
|
|
.enable_shift = CCM_PCCR0_SCC_OFFSET,
|
|
.disable = _clk_disable,
|
|
};
|
|
|
|
static unsigned long _clk_clko_round_rate(struct clk *clk, unsigned long rate)
|
|
{
|
|
u32 div;
|
|
unsigned long parent_rate;
|
|
|
|
parent_rate = clk_get_rate(clk->parent);
|
|
div = parent_rate / rate;
|
|
if (parent_rate % rate)
|
|
div++;
|
|
|
|
if (div > 8)
|
|
div = 8;
|
|
|
|
return parent_rate / div;
|
|
}
|
|
|
|
static int _clk_clko_set_rate(struct clk *clk, unsigned long rate)
|
|
{
|
|
u32 reg;
|
|
u32 div;
|
|
unsigned long parent_rate;
|
|
|
|
parent_rate = clk_get_rate(clk->parent);
|
|
|
|
div = parent_rate / rate;
|
|
|
|
if (div > 8 || div < 1 || ((parent_rate / div) != rate))
|
|
return -EINVAL;
|
|
div--;
|
|
|
|
reg = __raw_readl(CCM_PCDR0) & ~CCM_PCDR0_CLKODIV_MASK;
|
|
reg |= div << CCM_PCDR0_CLKODIV_OFFSET;
|
|
__raw_writel(reg, CCM_PCDR0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long _clk_clko_recalc(struct clk *clk)
|
|
{
|
|
u32 div;
|
|
unsigned long parent_rate;
|
|
|
|
parent_rate = clk_get_rate(clk->parent);
|
|
|
|
div = __raw_readl(CCM_PCDR0) & CCM_PCDR0_CLKODIV_MASK >>
|
|
CCM_PCDR0_CLKODIV_OFFSET;
|
|
div++;
|
|
|
|
return parent_rate / div;
|
|
}
|
|
|
|
static int _clk_clko_set_parent(struct clk *clk, struct clk *parent)
|
|
{
|
|
u32 reg;
|
|
|
|
reg = __raw_readl(CCM_CCSR) & ~CCM_CCSR_CLKOSEL_MASK;
|
|
|
|
if (parent == &ckil_clk)
|
|
reg |= 0 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &ckih_clk)
|
|
reg |= 2 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == mpll_clk.parent)
|
|
reg |= 3 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == spll_clk.parent)
|
|
reg |= 4 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &mpll_clk)
|
|
reg |= 5 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &spll_clk)
|
|
reg |= 6 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &cpu_clk)
|
|
reg |= 7 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &ahb_clk)
|
|
reg |= 8 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &ipg_clk)
|
|
reg |= 9 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &per_clk[0])
|
|
reg |= 0xA << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &per_clk[1])
|
|
reg |= 0xB << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &per_clk[2])
|
|
reg |= 0xC << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &per_clk[3])
|
|
reg |= 0xD << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &ssi1_clk[0])
|
|
reg |= 0xE << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &ssi2_clk[0])
|
|
reg |= 0xF << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &nfc_clk)
|
|
reg |= 0x10 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &mstick1_clk)
|
|
reg |= 0x11 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &vpu_clk)
|
|
reg |= 0x12 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else if (parent == &usb_clk[0])
|
|
reg |= 0x15 << CCM_CCSR_CLKOSEL_OFFSET;
|
|
else
|
|
return -EINVAL;
|
|
|
|
__raw_writel(reg, CCM_CCSR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _clk_clko_enable(struct clk *clk)
|
|
{
|
|
u32 reg;
|
|
|
|
reg = __raw_readl(CCM_PCDR0) | CCM_PCDR0_CLKO_EN;
|
|
__raw_writel(reg, CCM_PCDR0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void _clk_clko_disable(struct clk *clk)
|
|
{
|
|
u32 reg;
|
|
|
|
reg = __raw_readl(CCM_PCDR0) & ~CCM_PCDR0_CLKO_EN;
|
|
__raw_writel(reg, CCM_PCDR0);
|
|
}
|
|
|
|
static struct clk clko_clk = {
|
|
.name = "clko_clk",
|
|
.get_rate = _clk_clko_recalc,
|
|
.set_rate = _clk_clko_set_rate,
|
|
.round_rate = _clk_clko_round_rate,
|
|
.set_parent = _clk_clko_set_parent,
|
|
.enable = _clk_clko_enable,
|
|
.disable = _clk_clko_disable,
|
|
};
|
|
|
|
static struct clk *mxc_clks[] = {
|
|
&ckih_clk,
|
|
&ckil_clk,
|
|
&mpll_clk,
|
|
&mpll_main_clk[0],
|
|
&mpll_main_clk[1],
|
|
&spll_clk,
|
|
&cpu_clk,
|
|
&ahb_clk,
|
|
&ipg_clk,
|
|
&per_clk[0],
|
|
&per_clk[1],
|
|
&per_clk[2],
|
|
&per_clk[3],
|
|
&clko_clk,
|
|
&uart1_clk[0],
|
|
&uart1_clk[1],
|
|
&uart2_clk[0],
|
|
&uart2_clk[1],
|
|
&uart3_clk[0],
|
|
&uart3_clk[1],
|
|
&uart4_clk[0],
|
|
&uart4_clk[1],
|
|
&uart5_clk[0],
|
|
&uart5_clk[1],
|
|
&uart6_clk[0],
|
|
&uart6_clk[1],
|
|
&gpt1_clk[0],
|
|
&gpt1_clk[1],
|
|
&gpt2_clk[0],
|
|
&gpt2_clk[1],
|
|
&gpt3_clk[0],
|
|
&gpt3_clk[1],
|
|
&gpt4_clk[0],
|
|
&gpt4_clk[1],
|
|
&gpt5_clk[0],
|
|
&gpt5_clk[1],
|
|
&gpt6_clk[0],
|
|
&gpt6_clk[1],
|
|
&pwm_clk[0],
|
|
&pwm_clk[1],
|
|
&sdhc1_clk[0],
|
|
&sdhc1_clk[1],
|
|
&sdhc2_clk[0],
|
|
&sdhc2_clk[1],
|
|
&sdhc3_clk[0],
|
|
&sdhc3_clk[1],
|
|
&cspi1_clk[0],
|
|
&cspi1_clk[1],
|
|
&cspi2_clk[0],
|
|
&cspi2_clk[1],
|
|
&cspi3_clk[0],
|
|
&cspi3_clk[1],
|
|
&lcdc_clk[0],
|
|
&lcdc_clk[1],
|
|
&lcdc_clk[2],
|
|
&csi_clk[0],
|
|
&csi_clk[1],
|
|
&usb_clk[0],
|
|
&usb_clk[1],
|
|
&ssi1_clk[0],
|
|
&ssi1_clk[1],
|
|
&ssi2_clk[0],
|
|
&ssi2_clk[1],
|
|
&nfc_clk,
|
|
&vpu_clk,
|
|
&dma_clk,
|
|
&rtic_clk,
|
|
&brom_clk,
|
|
&emma_clk,
|
|
&slcdc_clk,
|
|
&fec_clk,
|
|
&emi_clk,
|
|
&sahara2_clk,
|
|
&ata_clk,
|
|
&mstick1_clk,
|
|
&wdog_clk,
|
|
&gpio_clk,
|
|
&i2c_clk[0],
|
|
&i2c_clk[1],
|
|
&iim_clk,
|
|
&kpp_clk,
|
|
&owire_clk,
|
|
&rtc_clk,
|
|
&scc_clk,
|
|
};
|
|
|
|
void __init change_external_low_reference(unsigned long new_ref)
|
|
{
|
|
external_low_reference = new_ref;
|
|
}
|
|
|
|
unsigned long __init clk_early_get_timer_rate(void)
|
|
{
|
|
return clk_get_rate(&per_clk[0]);
|
|
}
|
|
|
|
static void __init probe_mxc_clocks(void)
|
|
{
|
|
int i;
|
|
|
|
if (mx27_revision() >= CHIP_REV_2_0) {
|
|
if (CSCR() & 0x8000)
|
|
cpu_clk.parent = &mpll_main_clk[0];
|
|
|
|
if (!(CSCR() & 0x00800000))
|
|
ssi2_clk[0].parent = &spll_clk;
|
|
|
|
if (!(CSCR() & 0x00400000))
|
|
ssi1_clk[0].parent = &spll_clk;
|
|
|
|
if (!(CSCR() & 0x00200000))
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|
vpu_clk.parent = &spll_clk;
|
|
} else {
|
|
cpu_clk.parent = &mpll_clk;
|
|
cpu_clk.set_parent = NULL;
|
|
cpu_clk.round_rate = NULL;
|
|
cpu_clk.set_rate = NULL;
|
|
ahb_clk.parent = &mpll_clk;
|
|
|
|
for (i = 0; i < sizeof(per_clk) / sizeof(per_clk[0]); i++)
|
|
per_clk[i].parent = &mpll_clk;
|
|
|
|
ssi1_clk[0].parent = &mpll_clk;
|
|
ssi2_clk[0].parent = &mpll_clk;
|
|
|
|
vpu_clk.parent = &mpll_clk;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* must be called very early to get information about the
|
|
* available clock rate when the timer framework starts
|
|
*/
|
|
int __init mxc_clocks_init(unsigned long fref)
|
|
{
|
|
u32 cscr;
|
|
struct clk **clkp;
|
|
|
|
external_high_reference = fref;
|
|
|
|
/* detect clock reference for both system PLL */
|
|
cscr = CSCR();
|
|
if (cscr & CCM_CSCR_MCU)
|
|
mpll_clk.parent = &ckih_clk;
|
|
else
|
|
mpll_clk.parent = &ckil_clk;
|
|
|
|
if (cscr & CCM_CSCR_SP)
|
|
spll_clk.parent = &ckih_clk;
|
|
else
|
|
spll_clk.parent = &ckil_clk;
|
|
|
|
probe_mxc_clocks();
|
|
|
|
per_clk[0].enable(&per_clk[0]);
|
|
gpt1_clk[1].enable(&gpt1_clk[1]);
|
|
|
|
for (clkp = mxc_clks; clkp < mxc_clks + ARRAY_SIZE(mxc_clks); clkp++)
|
|
clk_register(*clkp);
|
|
|
|
/* Turn off all possible clocks */
|
|
__raw_writel(CCM_PCCR0_GPT1_MASK, CCM_PCCR0);
|
|
__raw_writel(CCM_PCCR1_PERCLK1_MASK | CCM_PCCR1_HCLK_EMI_MASK,
|
|
CCM_PCCR1);
|
|
spll_clk.disable(&spll_clk);
|
|
|
|
/* This will propagate to all children and init all the clock rates */
|
|
|
|
clk_enable(&emi_clk);
|
|
clk_enable(&gpio_clk);
|
|
clk_enable(&iim_clk);
|
|
clk_enable(&gpt1_clk[0]);
|
|
#ifdef CONFIG_DEBUG_LL_CONSOLE
|
|
clk_enable(&uart1_clk[0]);
|
|
#endif
|
|
return 0;
|
|
}
|