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/imx7-iomuxc-gpr.h> 8 #include <linux/of_platform.h> 9 #include <linux/phy.h> 10 #include <linux/regmap.h> 11 12 #include <asm/mach/arch.h> 13 #include <asm/mach/map.h> 14 15 #include "common.h" 16 17 static int bcm54220_phy_fixup(struct phy_device *dev) 18 { 19 /* enable RXC skew select RGMII copper mode */ 20 phy_write(dev, 0x1e, 0x21); 21 phy_write(dev, 0x1f, 0x7ea8); 22 phy_write(dev, 0x1e, 0x2f); 23 phy_write(dev, 0x1f, 0x71b7); 24 25 return 0; 26 } 27 28 #define PHY_ID_BCM54220 0x600d8589 29 30 static void __init imx7d_enet_phy_init(void) 31 { 32 if (IS_BUILTIN(CONFIG_PHYLIB)) { 33 phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff, 34 bcm54220_phy_fixup); 35 } 36 } 37 38 static void __init imx7d_enet_clk_sel(void) 39 { 40 struct regmap *gpr; 41 42 gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr"); 43 if (!IS_ERR(gpr)) { 44 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0); 45 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0); 46 } else { 47 pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n"); 48 } 49 } 50 51 static inline void imx7d_enet_init(void) 52 { 53 imx7d_enet_phy_init(); 54 imx7d_enet_clk_sel(); 55 } 56 57 static void __init imx7d_init_machine(void) 58 { 59 imx_anatop_init(); 60 imx7d_enet_init(); 61 } 62 63 static void __init imx7d_init_late(void) 64 { 65 if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT)) 66 platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0); 67 } 68 69 static void __init imx7d_init_irq(void) 70 { 71 imx_init_revision_from_anatop(); 72 imx7_src_init(); 73 irqchip_init(); 74 } 75 76 static const char *const imx7d_dt_compat[] __initconst = { 77 "fsl,imx7d", 78 "fsl,imx7s", 79 NULL, 80 }; 81 82 DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)") 83 .smp = smp_ops(imx7_smp_ops), 84 .init_irq = imx7d_init_irq, 85 .init_machine = imx7d_init_machine, 86 .init_late = imx7d_init_late, 87 .dt_compat = imx7d_dt_compat, 88 MACHINE_END 89