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.h> 8 #include <linux/of_platform.h> 9 #include <linux/mfd/syscon.h> 10 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.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 #include "hardware.h" 18 19 static void __init imx6sl_fec_init(void) 20 { 21 struct regmap *gpr; 22 23 /* set FEC clock from internal PLL clock source */ 24 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr"); 25 if (!IS_ERR(gpr)) { 26 regmap_update_bits(gpr, IOMUXC_GPR1, 27 IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0); 28 regmap_update_bits(gpr, IOMUXC_GPR1, 29 IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0); 30 } else { 31 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n"); 32 } 33 } 34 35 static void __init imx6sl_init_late(void) 36 { 37 /* imx6sl reuses imx6q cpufreq driver */ 38 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) 39 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); 40 41 if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl()) 42 imx6sl_cpuidle_init(); 43 else if (IS_ENABLED(CONFIG_SOC_IMX6SLL)) 44 imx6sx_cpuidle_init(); 45 } 46 47 static void __init imx6sl_init_machine(void) 48 { 49 struct device *parent; 50 51 parent = imx_soc_device_init(); 52 if (parent == NULL) 53 pr_warn("failed to initialize soc device\n"); 54 55 of_platform_default_populate(NULL, NULL, parent); 56 57 if (cpu_is_imx6sl()) 58 imx6sl_fec_init(); 59 imx_anatop_init(); 60 imx6sl_pm_init(); 61 } 62 63 static void __init imx6sl_init_irq(void) 64 { 65 imx_gpc_check_dt(); 66 imx_init_revision_from_anatop(); 67 imx_init_l2cache(); 68 imx_src_init(); 69 irqchip_init(); 70 if (cpu_is_imx6sl()) 71 imx6_pm_ccm_init("fsl,imx6sl-ccm"); 72 else 73 imx6_pm_ccm_init("fsl,imx6sll-ccm"); 74 } 75 76 static const char * const imx6sl_dt_compat[] __initconst = { 77 "fsl,imx6sl", 78 "fsl,imx6sll", 79 NULL, 80 }; 81 82 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)") 83 .l2c_aux_val = 0, 84 .l2c_aux_mask = ~0, 85 .init_irq = imx6sl_init_irq, 86 .init_machine = imx6sl_init_machine, 87 .init_late = imx6sl_init_late, 88 .dt_compat = imx6sl_dt_compat, 89 MACHINE_END 90