1 /* 2 * Copyright 2013 Freescale Semiconductor, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 */ 9 10 #include <linux/irqchip.h> 11 #include <linux/of.h> 12 #include <linux/of_platform.h> 13 #include <linux/mfd/syscon.h> 14 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> 15 #include <linux/regmap.h> 16 #include <asm/mach/arch.h> 17 #include <asm/mach/map.h> 18 19 #include "common.h" 20 #include "cpuidle.h" 21 22 static void __init imx6sl_fec_init(void) 23 { 24 struct regmap *gpr; 25 26 /* set FEC clock from internal PLL clock source */ 27 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr"); 28 if (!IS_ERR(gpr)) { 29 regmap_update_bits(gpr, IOMUXC_GPR1, 30 IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0); 31 regmap_update_bits(gpr, IOMUXC_GPR1, 32 IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0); 33 } else { 34 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n"); 35 } 36 } 37 38 static void __init imx6sl_init_late(void) 39 { 40 /* imx6sl reuses imx6q cpufreq driver */ 41 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) 42 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); 43 44 imx6sl_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_populate(NULL, of_default_bus_match_table, NULL, parent); 56 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 } 70 71 static const char * const imx6sl_dt_compat[] __initconst = { 72 "fsl,imx6sl", 73 NULL, 74 }; 75 76 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)") 77 .init_irq = imx6sl_init_irq, 78 .init_machine = imx6sl_init_machine, 79 .init_late = imx6sl_init_late, 80 .dt_compat = imx6sl_dt_compat, 81 MACHINE_END 82