mirror of https://gitee.com/openkylin/linux.git
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
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* Setup code for SAMA5 Evaluation Kits with Device Tree support
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*
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* Copyright (C) 2013 Atmel,
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* 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
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*
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* Licensed under GPLv2 or later.
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/gpio.h>
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#include <linux/micrel_phy.h>
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#include <linux/of.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <linux/phy.h>
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#include <asm/setup.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include "at91_aic.h"
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#include "generic.h"
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static const struct of_device_id irq_of_match[] __initconst = {
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{ .compatible = "atmel,sama5d3-aic", .data = at91_aic5_of_init },
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{ /*sentinel*/ }
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};
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static void __init at91_dt_init_irq(void)
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{
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of_irq_init(irq_of_match);
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}
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static int ksz9021rn_phy_fixup(struct phy_device *phy)
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{
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int value;
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/* Set delay values */
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value = MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW | 0x8000;
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phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
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value = 0xF2F4;
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phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
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value = MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW | 0x8000;
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phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
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value = 0x2222;
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phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
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return 0;
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}
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static void __init sama5_dt_device_init(void)
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{
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if (of_machine_is_compatible("atmel,sama5d3xcm") &&
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IS_ENABLED(CONFIG_PHYLIB))
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phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
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ksz9021rn_phy_fixup);
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static const char *sama5_dt_board_compat[] __initdata = {
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"atmel,sama5",
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NULL
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};
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DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
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/* Maintainer: Atmel */
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.init_time = at91sam926x_pit_init,
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.map_io = at91_map_io,
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.handle_irq = at91_aic5_handle_irq,
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.init_early = at91_dt_initialize,
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.init_irq = at91_dt_init_irq,
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.init_machine = sama5_dt_device_init,
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.dt_compat = sama5_dt_board_compat,
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MACHINE_END
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