diff options
Diffstat (limited to 'arch/arm/mach-mxs')
| -rw-r--r-- | arch/arm/mach-mxs/Kconfig | 8 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/mach-mxs.c | 270 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/pm.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/pm.h | 4 |
4 files changed, 190 insertions, 93 deletions
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig index 4dc2fbba0ec..84794137b17 100644 --- a/arch/arm/mach-mxs/Kconfig +++ b/arch/arm/mach-mxs/Kconfig @@ -3,7 +3,6 @@ config SOC_IMX23 select ARM_AMBA select ARM_CPU_SUSPEND if PM select CPU_ARM926T - select HAVE_PWM select PINCTRL_IMX23 config SOC_IMX28 @@ -11,20 +10,15 @@ config SOC_IMX28 select ARM_AMBA select ARM_CPU_SUSPEND if PM select CPU_ARM926T - select HAVE_CAN_FLEXCAN if CAN - select HAVE_PWM select PINCTRL_IMX28 config ARCH_MXS bool "Freescale MXS (i.MX23, i.MX28) support" depends on ARCH_MULTI_V5 select ARCH_REQUIRE_GPIOLIB - select CLKDEV_LOOKUP select CLKSRC_MMIO - select CLKSRC_OF - select GENERIC_CLOCKEVENTS - select HAVE_CLK_PREPARE select PINCTRL + select SOC_BUS select SOC_IMX23 select SOC_IMX28 select STMP_DEVICE diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index 5b62b6489d4..2e7cec86e50 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -13,19 +13,18 @@ #include <linux/clk.h> #include <linux/clk/mxs.h> #include <linux/clkdev.h> -#include <linux/clocksource.h> -#include <linux/can/platform/flexcan.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/gpio.h> #include <linux/init.h> -#include <linux/irqchip.h> #include <linux/irqchip/mxs.h> +#include <linux/reboot.h> #include <linux/micrel_phy.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/phy.h> #include <linux/pinctrl/consumer.h> +#include <linux/sys_soc.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/time.h> @@ -39,12 +38,30 @@ #define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0 0x2 #define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR1 0x3 +#define HW_DIGCTL_CHIPID 0x310 +#define HW_DIGCTL_CHIPID_MASK (0xffff << 16) +#define HW_DIGCTL_REV_MASK 0xff +#define HW_DIGCTL_CHIPID_MX23 (0x3780 << 16) +#define HW_DIGCTL_CHIPID_MX28 (0x2800 << 16) + +#define MXS_CHIP_REVISION_1_0 0x10 +#define MXS_CHIP_REVISION_1_1 0x11 +#define MXS_CHIP_REVISION_1_2 0x12 +#define MXS_CHIP_REVISION_1_3 0x13 +#define MXS_CHIP_REVISION_1_4 0x14 +#define MXS_CHIP_REV_UNKNOWN 0xff + #define MXS_GPIO_NR(bank, nr) ((bank) * 32 + (nr)) #define MXS_SET_ADDR 0x4 #define MXS_CLR_ADDR 0x8 #define MXS_TOG_ADDR 0xc +static u32 chipid; +static u32 socid; + +static void __iomem *reset_addr; + static inline void __mxs_setl(u32 mask, void __iomem *reg) { __raw_writel(mask, reg + MXS_SET_ADDR); @@ -60,41 +77,6 @@ static inline void __mxs_togl(u32 mask, void __iomem *reg) __raw_writel(mask, reg + MXS_TOG_ADDR); } -/* - * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers - */ -#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13) - -static int flexcan0_en, flexcan1_en; - -static void mx28evk_flexcan_switch(void) -{ - if (flexcan0_en || flexcan1_en) - gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1); - else - gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0); -} - -static void mx28evk_flexcan0_switch(int enable) -{ - flexcan0_en = enable; - mx28evk_flexcan_switch(); -} - -static void mx28evk_flexcan1_switch(int enable) -{ - flexcan1_en = enable; - mx28evk_flexcan_switch(); -} - -static struct flexcan_platform_data flexcan_pdata[2]; - -static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80032000, NULL, &flexcan_pdata[0]), - OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80034000, NULL, &flexcan_pdata[1]), - { /* sentinel */ } -}; - #define OCOTP_WORD_OFFSET 0x20 #define OCOTP_WORD_COUNT 0x20 @@ -175,6 +157,8 @@ enum mac_oui { OUI_FSL, OUI_DENX, OUI_CRYSTALFONTZ, + OUI_I2SE, + OUI_ARMADEUS, }; static void __init update_fec_mac_prop(enum mac_oui oui) @@ -229,6 +213,16 @@ static void __init update_fec_mac_prop(enum mac_oui oui) macaddr[1] = 0xb9; macaddr[2] = 0xe1; break; + case OUI_I2SE: + macaddr[0] = 0x00; + macaddr[1] = 0x01; + macaddr[2] = 0x87; + break; + case OUI_ARMADEUS: + macaddr[0] = 0x00; + macaddr[1] = 0x1e; + macaddr[2] = 0xac; + break; } val = ocotp[i]; macaddr[3] = (val >> 16) & 0xff; @@ -254,13 +248,9 @@ static void __init imx28_evk_init(void) mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); } -static void __init imx28_evk_post_init(void) +static void __init imx28_apf28_init(void) { - if (!gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT, - "flexcan-switch")) { - flexcan_pdata[0].transceiver_switch = mx28evk_flexcan0_switch; - flexcan_pdata[1].transceiver_switch = mx28evk_flexcan1_switch; - } + update_fec_mac_prop(OUI_ARMADEUS); } static int apx4devkit_phy_fixup(struct phy_device *phy) @@ -352,79 +342,190 @@ static void __init tx28_post_init(void) pinctrl_put(pctl); } -static void __init cfa10049_init(void) +static void __init crystalfontz_init(void) { update_fec_mac_prop(OUI_CRYSTALFONTZ); } -static void __init cfa10037_init(void) +static void __init duckbill_init(void) { - update_fec_mac_prop(OUI_CRYSTALFONTZ); + update_fec_mac_prop(OUI_I2SE); } -static void __init mxs_machine_init(void) +static void __init m28cu3_init(void) { - if (of_machine_is_compatible("fsl,imx28-evk")) - imx28_evk_init(); - else if (of_machine_is_compatible("bluegiga,apx4devkit")) - apx4devkit_init(); - else if (of_machine_is_compatible("crystalfontz,cfa10037")) - cfa10037_init(); - else if (of_machine_is_compatible("crystalfontz,cfa10049")) - cfa10049_init(); + update_fec_mac_prop(OUI_DENX); +} - of_platform_populate(NULL, of_default_bus_match_table, - mxs_auxdata_lookup, NULL); +static const char __init *mxs_get_soc_id(void) +{ + struct device_node *np; + void __iomem *digctl_base; - if (of_machine_is_compatible("karo,tx28")) - tx28_post_init(); + np = of_find_compatible_node(NULL, NULL, "fsl,imx23-digctl"); + digctl_base = of_iomap(np, 0); + WARN_ON(!digctl_base); - if (of_machine_is_compatible("fsl,imx28-evk")) - imx28_evk_post_init(); + chipid = readl(digctl_base + HW_DIGCTL_CHIPID); + socid = chipid & HW_DIGCTL_CHIPID_MASK; + + iounmap(digctl_base); + of_node_put(np); + + switch (socid) { + case HW_DIGCTL_CHIPID_MX23: + return "i.MX23"; + case HW_DIGCTL_CHIPID_MX28: + return "i.MX28"; + default: + return "Unknown"; + } +} + +static u32 __init mxs_get_cpu_rev(void) +{ + u32 rev = chipid & HW_DIGCTL_REV_MASK; + + switch (socid) { + case HW_DIGCTL_CHIPID_MX23: + switch (rev) { + case 0x0: + return MXS_CHIP_REVISION_1_0; + case 0x1: + return MXS_CHIP_REVISION_1_1; + case 0x2: + return MXS_CHIP_REVISION_1_2; + case 0x3: + return MXS_CHIP_REVISION_1_3; + case 0x4: + return MXS_CHIP_REVISION_1_4; + default: + return MXS_CHIP_REV_UNKNOWN; + } + case HW_DIGCTL_CHIPID_MX28: + switch (rev) { + case 0x0: + return MXS_CHIP_REVISION_1_1; + case 0x1: + return MXS_CHIP_REVISION_1_2; + default: + return MXS_CHIP_REV_UNKNOWN; + } + default: + return MXS_CHIP_REV_UNKNOWN; + } +} + +static const char __init *mxs_get_revision(void) +{ + u32 rev = mxs_get_cpu_rev(); + + if (rev != MXS_CHIP_REV_UNKNOWN) + return kasprintf(GFP_KERNEL, "%d.%d", (rev >> 4) & 0xf, + rev & 0xf); + else + return kasprintf(GFP_KERNEL, "%s", "Unknown"); } #define MX23_CLKCTRL_RESET_OFFSET 0x120 #define MX28_CLKCTRL_RESET_OFFSET 0x1e0 -#define MXS_CLKCTRL_RESET_CHIP (1 << 1) -/* - * Reset the system. It is called by machine_restart(). - */ -static void mxs_restart(char mode, const char *cmd) +static int __init mxs_restart_init(void) { struct device_node *np; - void __iomem *reset_addr; np = of_find_compatible_node(NULL, NULL, "fsl,clkctrl"); reset_addr = of_iomap(np, 0); if (!reset_addr) - goto soft; + return -ENODEV; if (of_device_is_compatible(np, "fsl,imx23-clkctrl")) reset_addr += MX23_CLKCTRL_RESET_OFFSET; else reset_addr += MX28_CLKCTRL_RESET_OFFSET; + of_node_put(np); - /* reset the chip */ - __mxs_setl(MXS_CLKCTRL_RESET_CHIP, reset_addr); + return 0; +} - pr_err("Failed to assert the chip reset\n"); +static void __init eukrea_mbmx283lc_init(void) +{ + mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); +} - /* Delay to allow the serial port to show the message */ - mdelay(50); +static void __init mxs_machine_init(void) +{ + struct device_node *root; + struct device *parent; + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + int ret; -soft: - /* We'll take a jump through zero as a poor second */ - soft_restart(0); + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return; + + root = of_find_node_by_path("/"); + ret = of_property_read_string(root, "model", &soc_dev_attr->machine); + if (ret) + return; + + soc_dev_attr->family = "Freescale MXS Family"; + soc_dev_attr->soc_id = mxs_get_soc_id(); + soc_dev_attr->revision = mxs_get_revision(); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr); + return; + } + + parent = soc_device_to_device(soc_dev); + + if (of_machine_is_compatible("fsl,imx28-evk")) + imx28_evk_init(); + if (of_machine_is_compatible("armadeus,imx28-apf28")) + imx28_apf28_init(); + else if (of_machine_is_compatible("bluegiga,apx4devkit")) + apx4devkit_init(); + else if (of_machine_is_compatible("crystalfontz,cfa10036")) + crystalfontz_init(); + else if (of_machine_is_compatible("eukrea,mbmx283lc")) + eukrea_mbmx283lc_init(); + else if (of_machine_is_compatible("i2se,duckbill")) + duckbill_init(); + else if (of_machine_is_compatible("msr,m28cu3")) + m28cu3_init(); + + of_platform_populate(NULL, of_default_bus_match_table, + NULL, parent); + + mxs_restart_init(); + + if (of_machine_is_compatible("karo,tx28")) + tx28_post_init(); } -static void __init mxs_timer_init(void) +#define MXS_CLKCTRL_RESET_CHIP (1 << 1) + +/* + * Reset the system. It is called by machine_restart(). + */ +static void mxs_restart(enum reboot_mode mode, const char *cmd) { - if (of_machine_is_compatible("fsl,imx23")) - mx23_clocks_init(); - else - mx28_clocks_init(); - clocksource_of_init(); + if (reset_addr) { + /* reset the chip */ + __mxs_setl(MXS_CLKCTRL_RESET_CHIP, reset_addr); + + pr_err("Failed to assert the chip reset\n"); + + /* Delay to allow the serial port to show the message */ + mdelay(50); + } + + /* We'll take a jump through zero as a poor second */ + soft_restart(0); } static const char *mxs_dt_compat[] __initdata = { @@ -434,10 +535,7 @@ static const char *mxs_dt_compat[] __initdata = { }; DT_MACHINE_START(MXS, "Freescale MXS (Device Tree)") - .map_io = debug_ll_io_init, - .init_irq = irqchip_init, .handle_irq = icoll_handle_irq, - .init_time = mxs_timer_init, .init_machine = mxs_machine_init, .init_late = mxs_pm_init, .dt_compat = mxs_dt_compat, diff --git a/arch/arm/mach-mxs/pm.c b/arch/arm/mach-mxs/pm.c index b2494d2db2c..0170e99fd70 100644 --- a/arch/arm/mach-mxs/pm.c +++ b/arch/arm/mach-mxs/pm.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/suspend.h> #include <linux/io.h> +#include "pm.h" static int mxs_suspend_enter(suspend_state_t state) { diff --git a/arch/arm/mach-mxs/pm.h b/arch/arm/mach-mxs/pm.h index f57e7cdece2..09d77b00a96 100644 --- a/arch/arm/mach-mxs/pm.h +++ b/arch/arm/mach-mxs/pm.h @@ -9,6 +9,10 @@ #ifndef __ARCH_MXS_PM_H #define __ARCH_MXS_PM_H +#ifdef CONFIG_PM void mxs_pm_init(void); +#else +#define mxs_pm_init NULL +#endif #endif |