| /* |
| * Copyright (C) 2013-2014 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| */ |
| |
| #include <linux/clk-provider.h> |
| #include <linux/delay.h> |
| #include <linux/irqchip.h> |
| #include <linux/of.h> |
| #include <linux/of_address.h> |
| #include <linux/of_platform.h> |
| #include <linux/opp.h> |
| #include <linux/regmap.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| #include <asm/system_misc.h> |
| |
| #include "common.h" |
| #include "cpuidle.h" |
| #include "hardware.h" |
| |
| static struct platform_device imx6sl_cpufreq_pdev = { |
| .name = "imx6-cpufreq", |
| }; |
| |
| static void __init imx6sl_fec_clk_init(void) |
| { |
| struct regmap *gpr; |
| |
| /* set FEC clock from internal PLL clock source */ |
| gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr"); |
| if (!IS_ERR(gpr)) { |
| regmap_update_bits(gpr, IOMUXC_GPR1, |
| IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0); |
| regmap_update_bits(gpr, IOMUXC_GPR1, |
| IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0); |
| } else |
| pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n"); |
| } |
| |
| static inline void imx6sl_fec_init(void) |
| { |
| imx6sl_fec_clk_init(); |
| imx6_enet_mac_init("fsl,imx6sl-fec"); |
| } |
| |
| static void __init imx6sl_init_machine(void) |
| { |
| struct device *parent; |
| |
| mxc_arch_reset_init_dt(); |
| |
| parent = imx_soc_device_init(); |
| if (parent == NULL) |
| pr_warn("failed to initialize soc device\n"); |
| |
| of_platform_populate(NULL, of_default_bus_match_table, NULL, parent); |
| |
| imx6sl_fec_init(); |
| imx_anatop_init(); |
| imx6_pm_init(); |
| } |
| |
| static void __init imx6sl_opp_init(struct device *cpu_dev) |
| { |
| struct device_node *np; |
| |
| np = of_find_node_by_path("/cpus/cpu@0"); |
| if (!np) { |
| pr_warn("failed to find cpu0 node\n"); |
| return; |
| } |
| |
| cpu_dev->of_node = np; |
| if (of_init_opp_table(cpu_dev)) { |
| pr_warn("failed to init OPP table\n"); |
| goto put_node; |
| } |
| |
| put_node: |
| of_node_put(np); |
| } |
| |
| static void __init imx6sl_init_late(void) |
| { |
| struct regmap *gpr; |
| |
| /* |
| * Need to force IOMUXC irq pending to meet CCM low power mode |
| * restriction, this is recommended by hardware team. |
| */ |
| gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr"); |
| if (!IS_ERR(gpr)) |
| regmap_update_bits(gpr, IOMUXC_GPR1, |
| IMX6Q_GPR1_GINT_MASK, |
| IMX6Q_GPR1_GINT_ASSERT); |
| else |
| pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n"); |
| |
| /* Init CPUIDLE */ |
| imx6sl_cpuidle_init(); |
| |
| if (IS_ENABLED(CONFIG_ARM_IMX6_CPUFREQ)) { |
| imx6sl_opp_init(&imx6sl_cpufreq_pdev.dev); |
| platform_device_register(&imx6sl_cpufreq_pdev); |
| } |
| |
| } |
| |
| static void __init imx6sl_map_io(void) |
| { |
| debug_ll_io_init(); |
| imx6_pm_map_io(); |
| imx6_busfreq_map_io(); |
| } |
| |
| static void __init imx6sl_init_irq(void) |
| { |
| imx_init_revision_from_anatop(); |
| imx_init_l2cache(); |
| imx_src_init(); |
| imx_gpc_init(); |
| irqchip_init(); |
| } |
| |
| static void __init imx6sl_timer_init(void) |
| { |
| of_clk_init(NULL); |
| } |
| |
| static const char *imx6sl_dt_compat[] __initdata = { |
| "fsl,imx6sl", |
| NULL, |
| }; |
| |
| DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)") |
| .map_io = imx6sl_map_io, |
| .init_irq = imx6sl_init_irq, |
| .init_time = imx6sl_timer_init, |
| .init_machine = imx6sl_init_machine, |
| .init_late = imx6sl_init_late, |
| .dt_compat = imx6sl_dt_compat, |
| .restart = mxc_restart, |
| MACHINE_END |