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 of_platform_default_populate(NULL, NULL, NULL); 59 imx6ul_enet_init(); 60 imx_anatop_init(); 61 imx6ul_pm_init(); 62 } 63 64 static 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 72 static 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 80 static const char * const imx6ul_dt_compat[] __initconst = { 81 "fsl,imx6ul", 82 "fsl,imx6ull", 83 NULL, 84 }; 85 86 DT_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, 91 MACHINE_END 92