| /* |
| * Copyright 2014 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/irqchip.h> |
| #include <linux/of_platform.h> |
| #include <linux/phy.h> |
| #include <linux/regmap.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| |
| #include "common.h" |
| #include "cpuidle.h" |
| |
| static int ar8031_phy_fixup(struct phy_device *dev) |
| { |
| u16 val; |
| |
| /* Set RGMII IO voltage to 1.8V */ |
| phy_write(dev, 0x1d, 0x1f); |
| phy_write(dev, 0x1e, 0x8); |
| |
| /* introduce tx clock delay */ |
| phy_write(dev, 0x1d, 0x5); |
| val = phy_read(dev, 0x1e); |
| val |= 0x0100; |
| phy_write(dev, 0x1e, val); |
| |
| return 0; |
| } |
| |
| #define PHY_ID_AR8031 0x004dd074 |
| static void __init imx6sx_enet_phy_init(void) |
| { |
| if (IS_BUILTIN(CONFIG_PHYLIB)) |
| phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff, |
| ar8031_phy_fixup); |
| } |
| |
| static void __init imx6sx_enet_clk_sel(void) |
| { |
| struct regmap *gpr; |
| |
| gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sx-iomuxc-gpr"); |
| if (!IS_ERR(gpr)) { |
| regmap_update_bits(gpr, IOMUXC_GPR1, |
| IMX6SX_GPR1_FEC_CLOCK_MUX_SEL_MASK, 0); |
| regmap_update_bits(gpr, IOMUXC_GPR1, |
| IMX6SX_GPR1_FEC_CLOCK_PAD_DIR_MASK, 0); |
| } else { |
| pr_err("failed to find fsl,imx6sx-iomux-gpr regmap\n"); |
| } |
| } |
| |
| static inline void imx6sx_enet_init(void) |
| { |
| imx6sx_enet_phy_init(); |
| imx6sx_enet_clk_sel(); |
| } |
| |
| static void __init imx6sx_init_machine(void) |
| { |
| struct device *parent; |
| |
| parent = imx_soc_device_init(); |
| if (parent == NULL) |
| pr_warn("failed to initialize soc device\n"); |
| |
| of_platform_default_populate(NULL, NULL, parent); |
| |
| imx6sx_enet_init(); |
| imx_anatop_init(); |
| imx6sx_pm_init(); |
| } |
| |
| static void __init imx6sx_init_irq(void) |
| { |
| imx_gpc_check_dt(); |
| imx_init_revision_from_anatop(); |
| imx_init_l2cache(); |
| imx_src_init(); |
| irqchip_init(); |
| imx6_pm_ccm_init("fsl,imx6sx-ccm"); |
| } |
| |
| static void __init imx6sx_init_late(void) |
| { |
| imx6sx_cpuidle_init(); |
| |
| if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) |
| platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); |
| } |
| |
| static const char * const imx6sx_dt_compat[] __initconst = { |
| "fsl,imx6sx", |
| NULL, |
| }; |
| |
| DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)") |
| .l2c_aux_val = 0, |
| .l2c_aux_mask = ~0, |
| .init_irq = imx6sx_init_irq, |
| .init_machine = imx6sx_init_machine, |
| .dt_compat = imx6sx_dt_compat, |
| .init_late = imx6sx_init_late, |
| MACHINE_END |