LXR linux/arch/arm/mach-imx/mach-imx6ul.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (C) 2015 Freescale Semiconductor, Inc.
   4 */
   5#include <linux/irqchip.h>
   6#include <linux/mfd/syscon.h>
   7#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
   8#include <linux/micrel_phy.h>
   9#include <linux/of_platform.h>
  10#include <linux/phy.h>
  11#include <linux/regmap.h>
  12#include <asm/mach/arch.h>
  13#include <asm/mach/map.h>
  14
  15#include "common.h"
  16#include "cpuidle.h"
  17
  18static void __init imx6ul_enet_clk_init(void)
  19{
  20        struct regmap *gpr;
  21
  22        gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr");
  23        if (!IS_ERR(gpr))
  24                regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR,
  25                                   IMX6UL_GPR1_ENET_CLK_OUTPUT);
  26        else
  27                pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n");
  28}
  29
  30static int ksz8081_phy_fixup(struct phy_device *dev)
  31{
  32        if (dev && dev->interface == PHY_INTERFACE_MODE_MII) {
  33                phy_write(dev, 0x1f, 0x8110);
  34                phy_write(dev, 0x16, 0x201);
  35        } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) {
  36                phy_write(dev, 0x1f, 0x8190);
  37                phy_write(dev, 0x16, 0x202);
  38        }
  39
  40        return 0;
  41}
  42
  43static void __init imx6ul_enet_phy_init(void)
  44{
  45        if (IS_BUILTIN(CONFIG_PHYLIB))
  46                phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK,
  47                                           ksz8081_phy_fixup);
  48}
  49
  50static inline void imx6ul_enet_init(void)
  51{
  52        imx6ul_enet_clk_init();
  53        imx6ul_enet_phy_init();
  54}
  55
  56static void __init imx6ul_init_machine(void)
  57{
  58        of_platform_default_populate(NULL, NULL, NULL);
  59        imx6ul_enet_init();
  60        imx_anatop_init();
  61        imx6ul_pm_init();
  62}
  63
  64static void __init imx6ul_init_irq(void)
  65{
  66        imx_init_revision_from_anatop();
  67        imx_src_init();
  68        irqchip_init();
  69        imx6_pm_ccm_init("fsl,imx6ul-ccm");
  70}
  71
  72static void __init imx6ul_init_late(void)
  73{
  74        imx6sx_cpuidle_init();
  75
  76        if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
  77                platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
  78}
  79
  80static const char * const imx6ul_dt_compat[] __initconst = {
  81        "fsl,imx6ul",
  82        "fsl,imx6ull",
  83        NULL,
  84};
  85
  86DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)")
  87        .init_irq       = imx6ul_init_irq,
  88        .init_machine   = imx6ul_init_machine,
  89        .init_late      = imx6ul_init_late,
  90        .dt_compat      = imx6ul_dt_compat,
  91MACHINE_END
  92