1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2013 Freescale Semiconductor, Inc. 4 */ 5 6 #include <linux/irqchip.h> 7 #include <linux/of_platform.h> 8 #include <linux/mfd/syscon.h> 9 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> 10 #include <linux/regmap.h> 11 #include <asm/mach/arch.h> 12 #include <asm/mach/map.h> 13 14 #include "common.h" 15 #include "cpuidle.h" 16 #include "hardware.h" 17 18 static void __init imx6sl_fec_init(void) 19 { 20 struct regmap *gpr; 21 22 /* set FEC clock from internal PLL clock source */ 23 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr"); 24 if (!IS_ERR(gpr)) { 25 regmap_update_bits(gpr, IOMUXC_GPR1, 26 IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0); 27 regmap_update_bits(gpr, IOMUXC_GPR1, 28 IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0); 29 } else { 30 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n"); 31 } 32 } 33 34 static void __init imx6sl_init_late(void) 35 { 36 /* imx6sl reuses imx6q cpufreq driver */ 37 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) 38 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); 39 40 if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl()) 41 imx6sl_cpuidle_init(); 42 else if (IS_ENABLED(CONFIG_SOC_IMX6SLL)) 43 imx6sx_cpuidle_init(); 44 } 45 46 static void __init imx6sl_init_machine(void) 47 { 48 struct device *parent; 49 50 parent = imx_soc_device_init(); 51 if (parent == NULL) 52 pr_warn("failed to initialize soc device\n"); 53 54 of_platform_default_populate(NULL, NULL, parent); 55 56 if (cpu_is_imx6sl()) 57 imx6sl_fec_init(); 58 imx_anatop_init(); 59 imx6sl_pm_init(); 60 } 61 62 static void __init imx6sl_init_irq(void) 63 { 64 imx_gpc_check_dt(); 65 imx_init_revision_from_anatop(); 66 imx_init_l2cache(); 67 imx_src_init(); 68 irqchip_init(); 69 if (cpu_is_imx6sl()) 70 imx6_pm_ccm_init("fsl,imx6sl-ccm"); 71 else 72 imx6_pm_ccm_init("fsl,imx6sll-ccm"); 73 } 74 75 static const char * const imx6sl_dt_compat[] __initconst = { 76 "fsl,imx6sl", 77 "fsl,imx6sll", 78 NULL, 79 }; 80 81 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)") 82 .l2c_aux_val = 0, 83 .l2c_aux_mask = ~0, 84 .init_irq = imx6sl_init_irq, 85 .init_machine = imx6sl_init_machine, 86 .init_late = imx6sl_init_late, 87 .dt_compat = imx6sl_dt_compat, 88 MACHINE_END 89