mirror of https://gitee.com/openkylin/linux.git
clock: mvebu new SoC changes for v3.15
- mvebu (Armada 375/380/385)
- extend corediv clock driver to support new SoCs
- add core and gating clock drivers for new SoCs
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Merge tag 'clk-mvebu-3xx-3.15' of git://git.infradead.org/linux-mvebu into clk-next-mvebu
clock: mvebu new SoC changes for v3.15
- mvebu (Armada 375/380/385)
- extend corediv clock driver to support new SoCs
- add core and gating clock drivers for new SoCs
This commit is contained in:
Mike Turquette
commit
05135b4cb4
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@ -11,6 +11,18 @@ The following is a list of provided IDs and clock names on Armada 370/XP:
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3 = hclk (DRAM control clock)
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4 = dramclk (DDR clock)
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The following is a list of provided IDs and clock names on Armada 375:
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0 = tclk (Internal Bus clock)
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1 = cpuclk (CPU clock)
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2 = l2clk (L2 Cache clock)
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3 = ddrclk (DDR clock)
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The following is a list of provided IDs and clock names on Armada 380/385:
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0 = tclk (Internal Bus clock)
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1 = cpuclk (CPU clock)
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2 = l2clk (L2 Cache clock)
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3 = ddrclk (DDR clock)
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The following is a list of provided IDs and clock names on Kirkwood and Dove:
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0 = tclk (Internal Bus clock)
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1 = cpuclk (CPU0 clock)
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@ -20,6 +32,8 @@ The following is a list of provided IDs and clock names on Kirkwood and Dove:
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Required properties:
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- compatible : shall be one of the following:
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"marvell,armada-370-core-clock" - For Armada 370 SoC core clocks
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"marvell,armada-375-core-clock" - For Armada 375 SoC core clocks
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"marvell,armada-380-core-clock" - For Armada 380/385 SoC core clocks
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"marvell,armada-xp-core-clock" - For Armada XP SoC core clocks
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"marvell,dove-core-clock" - for Dove SoC core clocks
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"marvell,kirkwood-core-clock" - for Kirkwood SoC (except mv88f6180)
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@ -1,9 +1,10 @@
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* Gated Clock bindings for Marvell EBU SoCs
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Marvell Armada 370/XP, Dove and Kirkwood allow some peripheral clocks to be
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gated to save some power. The clock consumer should specify the desired clock
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by having the clock ID in its "clocks" phandle cell. The clock ID is directly
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mapped to the corresponding clock gating control bit in HW to ease manual clock
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Marvell Armada 370/375/380/385/XP, Dove and Kirkwood allow some
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peripheral clocks to be gated to save some power. The clock consumer
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should specify the desired clock by having the clock ID in its
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"clocks" phandle cell. The clock ID is directly mapped to the
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corresponding clock gating control bit in HW to ease manual clock
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lookup in datasheet.
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The following is a list of provided IDs for Armada 370:
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@ -22,6 +23,60 @@ ID Clock Peripheral
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28 ddr DDR Cntrl
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30 sata1 SATA Host 0
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The following is a list of provided IDs for Armada 375:
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ID Clock Peripheral
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-----------------------------------
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2 mu Management Unit
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3 pp Packet Processor
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4 ptp PTP
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5 pex0 PCIe 0 Clock out
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6 pex1 PCIe 1 Clock out
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8 audio Audio Cntrl
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11 nd_clk Nand Flash Cntrl
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14 sata0_link SATA 0 Link
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15 sata0_core SATA 0 Core
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16 usb3 USB3 Host
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17 sdio SDHCI Host
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18 usb USB Host
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19 gop Gigabit Ethernet MAC
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20 sata1_link SATA 1 Link
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21 sata1_core SATA 1 Core
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22 xor0 XOR DMA 0
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23 xor1 XOR DMA 0
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24 copro Coprocessor
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25 tdm Time Division Mplx
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28 crypto0_enc Cryptographic Unit Port 0 Encryption
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29 crypto0_core Cryptographic Unit Port 0 Core
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30 crypto1_enc Cryptographic Unit Port 1 Encryption
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31 crypto1_core Cryptographic Unit Port 1 Core
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The following is a list of provided IDs for Armada 380/385:
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ID Clock Peripheral
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-----------------------------------
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0 audio Audio
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2 ge2 Gigabit Ethernet 2
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3 ge1 Gigabit Ethernet 1
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4 ge0 Gigabit Ethernet 0
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5 pex1 PCIe 1
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6 pex2 PCIe 2
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7 pex3 PCIe 3
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8 pex0 PCIe 0
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9 usb3h0 USB3 Host 0
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10 usb3h1 USB3 Host 1
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11 usb3d USB3 Device
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13 bm Buffer Management
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14 crypto0z Cryptographic 0 Z
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15 sata0 SATA 0
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16 crypto1z Cryptographic 1 Z
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17 sdio SDIO
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18 usb2 USB 2
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21 crypto1 Cryptographic 1
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22 xor0 XOR 0
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23 crypto0 Cryptographic 0
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25 tdm Time Division Multiplexing
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28 xor1 XOR 1
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30 sata1 SATA 1
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The following is a list of provided IDs for Armada XP:
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ID Clock Peripheral
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-----------------------------------
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@ -95,6 +150,8 @@ ID Clock Peripheral
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Required properties:
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- compatible : shall be one of the following:
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"marvell,armada-370-gating-clock" - for Armada 370 SoC clock gating
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"marvell,armada-375-gating-clock" - for Armada 375 SoC clock gating
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"marvell,armada-380-gating-clock" - for Armada 380/385 SoC clock gating
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"marvell,armada-xp-gating-clock" - for Armada XP SoC clock gating
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"marvell,dove-gating-clock" - for Dove SoC clock gating
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"marvell,kirkwood-gating-clock" - for Kirkwood SoC clock gating
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@ -13,6 +13,14 @@ config ARMADA_370_CLK
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select MVEBU_CLK_CPU
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select MVEBU_CLK_COREDIV
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config ARMADA_375_CLK
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bool
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select MVEBU_CLK_COMMON
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config ARMADA_38X_CLK
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bool
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select MVEBU_CLK_COMMON
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config ARMADA_XP_CLK
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bool
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select MVEBU_CLK_COMMON
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@ -3,6 +3,8 @@ obj-$(CONFIG_MVEBU_CLK_CPU) += clk-cpu.o
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obj-$(CONFIG_MVEBU_CLK_COREDIV) += clk-corediv.o
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obj-$(CONFIG_ARMADA_370_CLK) += armada-370.o
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obj-$(CONFIG_ARMADA_375_CLK) += armada-375.o
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obj-$(CONFIG_ARMADA_38X_CLK) += armada-38x.o
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obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o
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obj-$(CONFIG_DOVE_CLK) += dove.o
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obj-$(CONFIG_KIRKWOOD_CLK) += kirkwood.o
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@ -0,0 +1,184 @@
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/*
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* Marvell Armada 375 SoC clocks
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*
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* Copyright (C) 2014 Marvell
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*
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* Gregory CLEMENT <gregory.clement@free-electrons.com>
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* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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* Andrew Lunn <andrew@lunn.ch>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/clk-provider.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include "common.h"
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/*
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* Core Clocks
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*/
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/*
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* For the Armada 375 SoCs, the CPU, DDR and L2 clocks frequencies are
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* all modified at the same time, and not separately as for the Armada
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* 370 or the Armada XP SoCs.
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*
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* SAR0[21:17] : CPU frequency DDR frequency L2 frequency
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* 6 = 400 MHz 400 MHz 200 MHz
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* 15 = 600 MHz 600 MHz 300 MHz
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* 21 = 800 MHz 534 MHz 400 MHz
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* 25 = 1000 MHz 500 MHz 500 MHz
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* others reserved.
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*
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* SAR0[22] : TCLK frequency
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* 0 = 166 MHz
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* 1 = 200 MHz
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*/
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#define SAR1_A375_TCLK_FREQ_OPT 22
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#define SAR1_A375_TCLK_FREQ_OPT_MASK 0x1
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#define SAR1_A375_CPU_DDR_L2_FREQ_OPT 17
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#define SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
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static const u32 armada_375_tclk_frequencies[] __initconst = {
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166000000,
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200000000,
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};
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static u32 __init armada_375_get_tclk_freq(void __iomem *sar)
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{
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u8 tclk_freq_select;
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tclk_freq_select = ((readl(sar) >> SAR1_A375_TCLK_FREQ_OPT) &
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SAR1_A375_TCLK_FREQ_OPT_MASK);
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return armada_375_tclk_frequencies[tclk_freq_select];
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}
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static const u32 armada_375_cpu_frequencies[] __initconst = {
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0, 0, 0, 0, 0, 0,
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400000000,
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0, 0, 0, 0, 0, 0, 0, 0,
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600000000,
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0, 0, 0, 0, 0,
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800000000,
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0, 0, 0,
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1000000000,
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};
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static u32 __init armada_375_get_cpu_freq(void __iomem *sar)
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{
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u8 cpu_freq_select;
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cpu_freq_select = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
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SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
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if (cpu_freq_select >= ARRAY_SIZE(armada_375_cpu_frequencies)) {
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pr_err("Selected CPU frequency (%d) unsupported\n",
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cpu_freq_select);
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return 0;
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} else
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return armada_375_cpu_frequencies[cpu_freq_select];
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}
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enum { A375_CPU_TO_DDR, A375_CPU_TO_L2 };
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static const struct coreclk_ratio armada_375_coreclk_ratios[] __initconst = {
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{ .id = A375_CPU_TO_L2, .name = "l2clk" },
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{ .id = A375_CPU_TO_DDR, .name = "ddrclk" },
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};
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static const int armada_375_cpu_l2_ratios[32][2] __initconst = {
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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{0, 1}, {0, 1}, {1, 2}, {0, 1},
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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{0, 1}, {0, 1}, {0, 1}, {1, 2},
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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{0, 1}, {1, 2}, {0, 1}, {0, 1},
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{0, 1}, {1, 2}, {0, 1}, {0, 1},
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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};
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static const int armada_375_cpu_ddr_ratios[32][2] __initconst = {
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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{0, 1}, {0, 1}, {1, 1}, {0, 1},
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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{0, 1}, {0, 1}, {0, 1}, {2, 3},
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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{0, 1}, {2, 3}, {0, 1}, {0, 1},
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{0, 1}, {1, 2}, {0, 1}, {0, 1},
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{0, 1}, {0, 1}, {0, 1}, {0, 1},
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};
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static void __init armada_375_get_clk_ratio(
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void __iomem *sar, int id, int *mult, int *div)
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{
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u32 opt = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
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SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
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switch (id) {
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case A375_CPU_TO_L2:
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*mult = armada_375_cpu_l2_ratios[opt][0];
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*div = armada_375_cpu_l2_ratios[opt][1];
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break;
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case A375_CPU_TO_DDR:
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*mult = armada_375_cpu_ddr_ratios[opt][0];
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*div = armada_375_cpu_ddr_ratios[opt][1];
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break;
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}
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}
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static const struct coreclk_soc_desc armada_375_coreclks = {
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.get_tclk_freq = armada_375_get_tclk_freq,
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.get_cpu_freq = armada_375_get_cpu_freq,
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.get_clk_ratio = armada_375_get_clk_ratio,
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.ratios = armada_375_coreclk_ratios,
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.num_ratios = ARRAY_SIZE(armada_375_coreclk_ratios),
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};
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static void __init armada_375_coreclk_init(struct device_node *np)
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{
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mvebu_coreclk_setup(np, &armada_375_coreclks);
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}
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CLK_OF_DECLARE(armada_375_core_clk, "marvell,armada-375-core-clock",
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armada_375_coreclk_init);
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/*
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* Clock Gating Control
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*/
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static const struct clk_gating_soc_desc armada_375_gating_desc[] __initconst = {
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{ "mu", NULL, 2 },
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{ "pp", NULL, 3 },
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{ "ptp", NULL, 4 },
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{ "pex0", NULL, 5 },
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{ "pex1", NULL, 6 },
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{ "audio", NULL, 8 },
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{ "nd_clk", "nand", 11 },
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{ "sata0_link", "sata0_core", 14 },
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{ "sata0_core", NULL, 15 },
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{ "usb3", NULL, 16 },
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{ "sdio", NULL, 17 },
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{ "usb", NULL, 18 },
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{ "gop", NULL, 19 },
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{ "sata1_link", "sata1_core", 20 },
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{ "sata1_core", NULL, 21 },
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{ "xor0", NULL, 22 },
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{ "xor1", NULL, 23 },
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{ "copro", NULL, 24 },
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{ "tdm", NULL, 25 },
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{ "crypto0_enc", NULL, 28 },
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{ "crypto0_core", NULL, 29 },
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{ "crypto1_enc", NULL, 30 },
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{ "crypto1_core", NULL, 31 },
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{ }
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};
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static void __init armada_375_clk_gating_init(struct device_node *np)
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{
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mvebu_clk_gating_setup(np, armada_375_gating_desc);
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}
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CLK_OF_DECLARE(armada_375_clk_gating, "marvell,armada-375-gating-clock",
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armada_375_clk_gating_init);
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@ -0,0 +1,167 @@
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/*
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* Marvell Armada 380/385 SoC clocks
|
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*
|
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* Copyright (C) 2014 Marvell
|
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*
|
||||
* Gregory CLEMENT <gregory.clement@free-electrons.com>
|
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* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
|
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* Andrew Lunn <andrew@lunn.ch>
|
||||
*
|
||||
* This file is licensed under the terms of the GNU General Public
|
||||
* License version 2. This program is licensed "as is" without any
|
||||
* warranty of any kind, whether express or implied.
|
||||
*/
|
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|
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#include <linux/kernel.h>
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#include <linux/clk-provider.h>
|
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#include <linux/io.h>
|
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#include <linux/of.h>
|
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#include "common.h"
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/*
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* SAR[14:10] : Ratios between PCLK0, NBCLK, HCLK and DRAM clocks
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*
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* SAR[15] : TCLK frequency
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* 0 = 250 MHz
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* 1 = 200 MHz
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*/
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#define SAR_A380_TCLK_FREQ_OPT 15
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#define SAR_A380_TCLK_FREQ_OPT_MASK 0x1
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#define SAR_A380_CPU_DDR_L2_FREQ_OPT 10
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#define SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
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static const u32 armada_38x_tclk_frequencies[] __initconst = {
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250000000,
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200000000,
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};
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static u32 __init armada_38x_get_tclk_freq(void __iomem *sar)
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{
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u8 tclk_freq_select;
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tclk_freq_select = ((readl(sar) >> SAR_A380_TCLK_FREQ_OPT) &
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SAR_A380_TCLK_FREQ_OPT_MASK);
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return armada_38x_tclk_frequencies[tclk_freq_select];
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}
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||||
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static const u32 armada_38x_cpu_frequencies[] __initconst = {
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0, 0, 0, 0,
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1066 * 1000 * 1000, 0, 0, 0,
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1332 * 1000 * 1000, 0, 0, 0,
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1600 * 1000 * 1000,
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};
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static u32 __init armada_38x_get_cpu_freq(void __iomem *sar)
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{
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u8 cpu_freq_select;
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||||
cpu_freq_select = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
|
||||
SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
|
||||
if (cpu_freq_select >= ARRAY_SIZE(armada_38x_cpu_frequencies)) {
|
||||
pr_err("Selected CPU frequency (%d) unsupported\n",
|
||||
cpu_freq_select);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return armada_38x_cpu_frequencies[cpu_freq_select];
|
||||
}
|
||||
|
||||
enum { A380_CPU_TO_DDR, A380_CPU_TO_L2 };
|
||||
|
||||
static const struct coreclk_ratio armada_38x_coreclk_ratios[] __initconst = {
|
||||
{ .id = A380_CPU_TO_L2, .name = "l2clk" },
|
||||
{ .id = A380_CPU_TO_DDR, .name = "ddrclk" },
|
||||
};
|
||||
|
||||
static const int armada_38x_cpu_l2_ratios[32][2] __initconst = {
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{1, 2}, {0, 1}, {0, 1}, {0, 1},
|
||||
{1, 2}, {0, 1}, {0, 1}, {0, 1},
|
||||
{1, 2}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
};
|
||||
|
||||
static const int armada_38x_cpu_ddr_ratios[32][2] __initconst = {
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{1, 2}, {0, 1}, {0, 1}, {0, 1},
|
||||
{1, 2}, {0, 1}, {0, 1}, {0, 1},
|
||||
{1, 2}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
{0, 1}, {0, 1}, {0, 1}, {0, 1},
|
||||
};
|
||||
|
||||
static void __init armada_38x_get_clk_ratio(
|
||||
void __iomem *sar, int id, int *mult, int *div)
|
||||
{
|
||||
u32 opt = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
|
||||
SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
|
||||
|
||||
switch (id) {
|
||||
case A380_CPU_TO_L2:
|
||||
*mult = armada_38x_cpu_l2_ratios[opt][0];
|
||||
*div = armada_38x_cpu_l2_ratios[opt][1];
|
||||
break;
|
||||
case A380_CPU_TO_DDR:
|
||||
*mult = armada_38x_cpu_ddr_ratios[opt][0];
|
||||
*div = armada_38x_cpu_ddr_ratios[opt][1];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct coreclk_soc_desc armada_38x_coreclks = {
|
||||
.get_tclk_freq = armada_38x_get_tclk_freq,
|
||||
.get_cpu_freq = armada_38x_get_cpu_freq,
|
||||
.get_clk_ratio = armada_38x_get_clk_ratio,
|
||||
.ratios = armada_38x_coreclk_ratios,
|
||||
.num_ratios = ARRAY_SIZE(armada_38x_coreclk_ratios),
|
||||
};
|
||||
|
||||
static void __init armada_38x_coreclk_init(struct device_node *np)
|
||||
{
|
||||
mvebu_coreclk_setup(np, &armada_38x_coreclks);
|
||||
}
|
||||
CLK_OF_DECLARE(armada_38x_core_clk, "marvell,armada-380-core-clock",
|
||||
armada_38x_coreclk_init);
|
||||
|
||||
/*
|
||||
* Clock Gating Control
|
||||
*/
|
||||
static const struct clk_gating_soc_desc armada_38x_gating_desc[] __initconst = {
|
||||
{ "audio", NULL, 0 },
|
||||
{ "ge2", NULL, 2 },
|
||||
{ "ge1", NULL, 3 },
|
||||
{ "ge0", NULL, 4 },
|
||||
{ "pex1", NULL, 5 },
|
||||
{ "pex2", NULL, 6 },
|
||||
{ "pex3", NULL, 7 },
|
||||
{ "pex0", NULL, 8 },
|
||||
{ "usb3h0", NULL, 9 },
|
||||
{ "usb3h1", NULL, 10 },
|
||||
{ "usb3d", NULL, 11 },
|
||||
{ "bm", NULL, 13 },
|
||||
{ "crypto0z", NULL, 14 },
|
||||
{ "sata0", NULL, 15 },
|
||||
{ "crypto1z", NULL, 16 },
|
||||
{ "sdio", NULL, 17 },
|
||||
{ "usb2", NULL, 18 },
|
||||
{ "crypto1", NULL, 21 },
|
||||
{ "xor0", NULL, 22 },
|
||||
{ "crypto0", NULL, 23 },
|
||||
{ "tdm", NULL, 25 },
|
||||
{ "xor1", NULL, 28 },
|
||||
{ "sata1", NULL, 30 },
|
||||
{ }
|
||||
};
|
||||
|
||||
static void __init armada_38x_clk_gating_init(struct device_node *np)
|
||||
{
|
||||
mvebu_clk_gating_setup(np, armada_38x_gating_desc);
|
||||
}
|
||||
CLK_OF_DECLARE(armada_38x_clk_gating, "marvell,armada-380-gating-clock",
|
||||
armada_38x_clk_gating_init);
|
||||
|
|
@ -18,26 +18,56 @@
|
|||
#include "common.h"
|
||||
|
||||
#define CORE_CLK_DIV_RATIO_MASK 0xff
|
||||
#define CORE_CLK_DIV_RATIO_RELOAD BIT(8)
|
||||
#define CORE_CLK_DIV_ENABLE_OFFSET 24
|
||||
#define CORE_CLK_DIV_RATIO_OFFSET 0x8
|
||||
|
||||
/*
|
||||
* This structure describes the hardware details (bit offset and mask)
|
||||
* to configure one particular core divider clock. Those hardware
|
||||
* details may differ from one SoC to another. This structure is
|
||||
* therefore typically instantiated statically to describe the
|
||||
* hardware details.
|
||||
*/
|
||||
struct clk_corediv_desc {
|
||||
unsigned int mask;
|
||||
unsigned int offset;
|
||||
unsigned int fieldbit;
|
||||
};
|
||||
|
||||
/*
|
||||
* This structure describes the hardware details to configure the core
|
||||
* divider clocks on a given SoC. Amongst others, it points to the
|
||||
* array of core divider clock descriptors for this SoC, as well as
|
||||
* the corresponding operations to manipulate them.
|
||||
*/
|
||||
struct clk_corediv_soc_desc {
|
||||
const struct clk_corediv_desc *descs;
|
||||
unsigned int ndescs;
|
||||
const struct clk_ops ops;
|
||||
u32 ratio_reload;
|
||||
u32 enable_bit_offset;
|
||||
u32 ratio_offset;
|
||||
};
|
||||
|
||||
/*
|
||||
* This structure represents one core divider clock for the clock
|
||||
* framework, and is dynamically allocated for each core divider clock
|
||||
* existing in the current SoC.
|
||||
*/
|
||||
struct clk_corediv {
|
||||
struct clk_hw hw;
|
||||
void __iomem *reg;
|
||||
struct clk_corediv_desc desc;
|
||||
const struct clk_corediv_desc *desc;
|
||||
const struct clk_corediv_soc_desc *soc_desc;
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
static struct clk_onecell_data clk_data;
|
||||
|
||||
static const struct clk_corediv_desc mvebu_corediv_desc[] __initconst = {
|
||||
/*
|
||||
* Description of the core divider clocks available. For now, we
|
||||
* support only NAND, and it is available at the same register
|
||||
* locations regardless of the SoC.
|
||||
*/
|
||||
static const struct clk_corediv_desc mvebu_corediv_desc[] = {
|
||||
{ .mask = 0x3f, .offset = 8, .fieldbit = 1 }, /* NAND clock */
|
||||
};
|
||||
|
||||
|
|
@ -46,8 +76,9 @@ static const struct clk_corediv_desc mvebu_corediv_desc[] __initconst = {
|
|||
static int clk_corediv_is_enabled(struct clk_hw *hwclk)
|
||||
{
|
||||
struct clk_corediv *corediv = to_corediv_clk(hwclk);
|
||||
struct clk_corediv_desc *desc = &corediv->desc;
|
||||
u32 enable_mask = BIT(desc->fieldbit) << CORE_CLK_DIV_ENABLE_OFFSET;
|
||||
const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
|
||||
const struct clk_corediv_desc *desc = corediv->desc;
|
||||
u32 enable_mask = BIT(desc->fieldbit) << soc_desc->enable_bit_offset;
|
||||
|
||||
return !!(readl(corediv->reg) & enable_mask);
|
||||
}
|
||||
|
|
@ -55,14 +86,15 @@ static int clk_corediv_is_enabled(struct clk_hw *hwclk)
|
|||
static int clk_corediv_enable(struct clk_hw *hwclk)
|
||||
{
|
||||
struct clk_corediv *corediv = to_corediv_clk(hwclk);
|
||||
struct clk_corediv_desc *desc = &corediv->desc;
|
||||
const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
|
||||
const struct clk_corediv_desc *desc = corediv->desc;
|
||||
unsigned long flags = 0;
|
||||
u32 reg;
|
||||
|
||||
spin_lock_irqsave(&corediv->lock, flags);
|
||||
|
||||
reg = readl(corediv->reg);
|
||||
reg |= (BIT(desc->fieldbit) << CORE_CLK_DIV_ENABLE_OFFSET);
|
||||
reg |= (BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
|
||||
writel(reg, corediv->reg);
|
||||
|
||||
spin_unlock_irqrestore(&corediv->lock, flags);
|
||||
|
|
@ -73,14 +105,15 @@ static int clk_corediv_enable(struct clk_hw *hwclk)
|
|||
static void clk_corediv_disable(struct clk_hw *hwclk)
|
||||
{
|
||||
struct clk_corediv *corediv = to_corediv_clk(hwclk);
|
||||
struct clk_corediv_desc *desc = &corediv->desc;
|
||||
const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
|
||||
const struct clk_corediv_desc *desc = corediv->desc;
|
||||
unsigned long flags = 0;
|
||||
u32 reg;
|
||||
|
||||
spin_lock_irqsave(&corediv->lock, flags);
|
||||
|
||||
reg = readl(corediv->reg);
|
||||
reg &= ~(BIT(desc->fieldbit) << CORE_CLK_DIV_ENABLE_OFFSET);
|
||||
reg &= ~(BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
|
||||
writel(reg, corediv->reg);
|
||||
|
||||
spin_unlock_irqrestore(&corediv->lock, flags);
|
||||
|
|
@ -90,10 +123,11 @@ static unsigned long clk_corediv_recalc_rate(struct clk_hw *hwclk,
|
|||
unsigned long parent_rate)
|
||||
{
|
||||
struct clk_corediv *corediv = to_corediv_clk(hwclk);
|
||||
struct clk_corediv_desc *desc = &corediv->desc;
|
||||
const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
|
||||
const struct clk_corediv_desc *desc = corediv->desc;
|
||||
u32 reg, div;
|
||||
|
||||
reg = readl(corediv->reg + CORE_CLK_DIV_RATIO_OFFSET);
|
||||
reg = readl(corediv->reg + soc_desc->ratio_offset);
|
||||
div = (reg >> desc->offset) & desc->mask;
|
||||
return parent_rate / div;
|
||||
}
|
||||
|
|
@ -117,7 +151,8 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
|
|||
unsigned long parent_rate)
|
||||
{
|
||||
struct clk_corediv *corediv = to_corediv_clk(hwclk);
|
||||
struct clk_corediv_desc *desc = &corediv->desc;
|
||||
const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
|
||||
const struct clk_corediv_desc *desc = corediv->desc;
|
||||
unsigned long flags = 0;
|
||||
u32 reg, div;
|
||||
|
||||
|
|
@ -126,17 +161,17 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
|
|||
spin_lock_irqsave(&corediv->lock, flags);
|
||||
|
||||
/* Write new divider to the divider ratio register */
|
||||
reg = readl(corediv->reg + CORE_CLK_DIV_RATIO_OFFSET);
|
||||
reg = readl(corediv->reg + soc_desc->ratio_offset);
|
||||
reg &= ~(desc->mask << desc->offset);
|
||||
reg |= (div & desc->mask) << desc->offset;
|
||||
writel(reg, corediv->reg + CORE_CLK_DIV_RATIO_OFFSET);
|
||||
writel(reg, corediv->reg + soc_desc->ratio_offset);
|
||||
|
||||
/* Set reload-force for this clock */
|
||||
reg = readl(corediv->reg) | BIT(desc->fieldbit);
|
||||
writel(reg, corediv->reg);
|
||||
|
||||
/* Now trigger the clock update */
|
||||
reg = readl(corediv->reg) | CORE_CLK_DIV_RATIO_RELOAD;
|
||||
reg = readl(corediv->reg) | soc_desc->ratio_reload;
|
||||
writel(reg, corediv->reg);
|
||||
|
||||
/*
|
||||
|
|
@ -144,7 +179,7 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
|
|||
* ratios request and the reload request.
|
||||
*/
|
||||
udelay(1000);
|
||||
reg &= ~(CORE_CLK_DIV_RATIO_MASK | CORE_CLK_DIV_RATIO_RELOAD);
|
||||
reg &= ~(CORE_CLK_DIV_RATIO_MASK | soc_desc->ratio_reload);
|
||||
writel(reg, corediv->reg);
|
||||
udelay(1000);
|
||||
|
||||
|
|
@ -153,16 +188,37 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static const struct clk_ops corediv_ops = {
|
||||
.enable = clk_corediv_enable,
|
||||
.disable = clk_corediv_disable,
|
||||
.is_enabled = clk_corediv_is_enabled,
|
||||
.recalc_rate = clk_corediv_recalc_rate,
|
||||
.round_rate = clk_corediv_round_rate,
|
||||
.set_rate = clk_corediv_set_rate,
|
||||
static const struct clk_corediv_soc_desc armada370_corediv_soc = {
|
||||
.descs = mvebu_corediv_desc,
|
||||
.ndescs = ARRAY_SIZE(mvebu_corediv_desc),
|
||||
.ops = {
|
||||
.enable = clk_corediv_enable,
|
||||
.disable = clk_corediv_disable,
|
||||
.is_enabled = clk_corediv_is_enabled,
|
||||
.recalc_rate = clk_corediv_recalc_rate,
|
||||
.round_rate = clk_corediv_round_rate,
|
||||
.set_rate = clk_corediv_set_rate,
|
||||
},
|
||||
.ratio_reload = BIT(8),
|
||||
.enable_bit_offset = 24,
|
||||
.ratio_offset = 0x8,
|
||||
};
|
||||
|
||||
static void __init mvebu_corediv_clk_init(struct device_node *node)
|
||||
static const struct clk_corediv_soc_desc armada375_corediv_soc = {
|
||||
.descs = mvebu_corediv_desc,
|
||||
.ndescs = ARRAY_SIZE(mvebu_corediv_desc),
|
||||
.ops = {
|
||||
.recalc_rate = clk_corediv_recalc_rate,
|
||||
.round_rate = clk_corediv_round_rate,
|
||||
.set_rate = clk_corediv_set_rate,
|
||||
},
|
||||
.ratio_reload = BIT(8),
|
||||
.ratio_offset = 0x8,
|
||||
};
|
||||
|
||||
static void __init
|
||||
mvebu_corediv_clk_init(struct device_node *node,
|
||||
const struct clk_corediv_soc_desc *soc_desc)
|
||||
{
|
||||
struct clk_init_data init;
|
||||
struct clk_corediv *corediv;
|
||||
|
|
@ -178,7 +234,7 @@ static void __init mvebu_corediv_clk_init(struct device_node *node)
|
|||
|
||||
parent_name = of_clk_get_parent_name(node, 0);
|
||||
|
||||
clk_data.clk_num = ARRAY_SIZE(mvebu_corediv_desc);
|
||||
clk_data.clk_num = soc_desc->ndescs;
|
||||
|
||||
/* clks holds the clock array */
|
||||
clks = kcalloc(clk_data.clk_num, sizeof(struct clk *),
|
||||
|
|
@ -199,10 +255,11 @@ static void __init mvebu_corediv_clk_init(struct device_node *node)
|
|||
init.num_parents = 1;
|
||||
init.parent_names = &parent_name;
|
||||
init.name = clk_name;
|
||||
init.ops = &corediv_ops;
|
||||
init.ops = &soc_desc->ops;
|
||||
init.flags = 0;
|
||||
|
||||
corediv[i].desc = mvebu_corediv_desc[i];
|
||||
corediv[i].soc_desc = soc_desc;
|
||||
corediv[i].desc = soc_desc->descs + i;
|
||||
corediv[i].reg = base;
|
||||
corediv[i].hw.init = &init;
|
||||
|
||||
|
|
@ -219,5 +276,17 @@ static void __init mvebu_corediv_clk_init(struct device_node *node)
|
|||
err_unmap:
|
||||
iounmap(base);
|
||||
}
|
||||
CLK_OF_DECLARE(mvebu_corediv_clk, "marvell,armada-370-corediv-clock",
|
||||
mvebu_corediv_clk_init);
|
||||
|
||||
static void __init armada370_corediv_clk_init(struct device_node *node)
|
||||
{
|
||||
return mvebu_corediv_clk_init(node, &armada370_corediv_soc);
|
||||
}
|
||||
CLK_OF_DECLARE(armada370_corediv_clk, "marvell,armada-370-corediv-clock",
|
||||
armada370_corediv_clk_init);
|
||||
|
||||
static void __init armada375_corediv_clk_init(struct device_node *node)
|
||||
{
|
||||
return mvebu_corediv_clk_init(node, &armada375_corediv_soc);
|
||||
}
|
||||
CLK_OF_DECLARE(armada375_corediv_clk, "marvell,armada-375-corediv-clock",
|
||||
armada375_corediv_clk_init);
|
||||
|
|
|
|||
Loading…
Reference in New Issue