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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/arm/mach-imx/mach-imx7d.c
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// SPDX-License-Identifier: GPL-2.0-only

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/*

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 * Copyright (C) 2015 Freescale Semiconductor, Inc.

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 */

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#include <linux/irqchip.h>

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#include <linux/mfd/syscon.h>

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#include <linux/mfd/syscon/imx7-iomuxc-gpr.h>

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#include <linux/platform_device.h>

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#include <linux/phy.h>

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#include <linux/regmap.h>

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#include <asm/mach/arch.h>

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#include <asm/mach/map.h>

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#include "common.h"

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static int bcm54220_phy_fixup(struct phy_device *dev)

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{

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	/* enable RXC skew select RGMII copper mode */

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	phy_write(dev, 0x1e, 0x21);

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	phy_write(dev, 0x1f, 0x7ea8);

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	phy_write(dev, 0x1e, 0x2f);

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	phy_write(dev, 0x1f, 0x71b7);

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	return 0;

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}

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#define PHY_ID_BCM54220	0x600d8589

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static void __init imx7d_enet_phy_init(void)

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{

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	if (IS_BUILTIN(CONFIG_PHYLIB)) {

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		phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,

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					   bcm54220_phy_fixup);

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	}

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}

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static void __init imx7d_enet_clk_sel(void)

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{

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	struct regmap *gpr;

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	gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr");

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	if (!IS_ERR(gpr)) {

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		regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0);

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		regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0);

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	} else {

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		pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");

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	}

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}

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static void __init imx7d_enet_init(void)

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{

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	imx7d_enet_phy_init();

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	imx7d_enet_clk_sel();

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}

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static void __init imx7d_init_machine(void)

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{

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	imx_anatop_init();

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	imx7d_enet_init();

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}

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static void __init imx7d_init_late(void)

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{

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	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))

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		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);

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}

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static void __init imx7d_init_irq(void)

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{

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	imx_init_revision_from_anatop();

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	imx7_src_init();

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	irqchip_init();

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}

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static const char *const imx7d_dt_compat[] __initconst = {

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	"fsl,imx7d",

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	"fsl,imx7s",

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	NULL,

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};

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DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")

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	.smp            = smp_ops(imx7_smp_ops),

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	.init_irq	= imx7d_init_irq,

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	.init_machine	= imx7d_init_machine,

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	.init_late      = imx7d_init_late,

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	.dt_compat	= imx7d_dt_compat,

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MACHINE_END

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