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 18 static 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 30 static 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 43 static 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 50 static inline void imx6ul_enet_init(void) 51 { 52 imx6ul_enet_clk_init(); 53 imx6ul_enet_phy_init(); 54 } 55 56 static void __init imx6ul_init_machine(void) 57 { 58 struct device *parent; 59 60 parent = imx_soc_device_init(); 61 if (parent == NULL) 62 pr_warn("failed to initialize soc device\n"); 63 64 of_platform_default_populate(NULL, NULL, parent); 65 imx6ul_enet_init(); 66 imx_anatop_init(); 67 imx6ul_pm_init(); 68 } 69 70 static void __init imx6ul_init_irq(void) 71 { 72 imx_init_revision_from_anatop(); 73 imx_src_init(); 74 irqchip_init(); 75 imx6_pm_ccm_init("fsl,imx6ul-ccm"); 76 } 77 78 static void __init imx6ul_init_late(void) 79 { 80 imx6sx_cpuidle_init(); 81 82 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) 83 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); 84 } 85 86 static const char * const imx6ul_dt_compat[] __initconst = { 87 "fsl,imx6ul", 88 "fsl,imx6ull", 89 NULL, 90 }; 91 92 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)") 93 .init_irq = imx6ul_init_irq, 94 .init_machine = imx6ul_init_machine, 95 .init_late = imx6ul_init_late, 96 .dt_compat = imx6ul_dt_compat, 97 MACHINE_END 98