diff options
Diffstat (limited to 'arch/arm/mach-imx/imx8/cpu.c')
| -rw-r--r-- | arch/arm/mach-imx/imx8/cpu.c | 189 |
1 files changed, 14 insertions, 175 deletions
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index f2fa262ac89..d393a011782 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -60,18 +60,18 @@ int arch_cpu_init_dm(void) int node, ret; node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "fsl,imx8-mu"); - ret = device_bind_driver_to_node(gd->dm_root, "imx8_scu", "imx8_scu", - offset_to_ofnode(node), &devp); + ret = uclass_get_device_by_of_offset(UCLASS_MISC, node, &devp); if (ret) { - printf("could not find scu %d\n", ret); + printf("could not get scu %d\n", ret); return ret; } - ret = device_probe(devp); - if (ret) { - printf("scu probe failed %d\n", ret); - return ret; + if (is_imx8qm()) { + ret = sc_pm_set_resource_power_mode(-1, SC_R_SMMU, + SC_PM_PW_MODE_ON); + if (ret) + return ret; } return 0; @@ -475,10 +475,17 @@ u64 get_page_table_size(void) } #endif +#if defined(CONFIG_IMX8QM) +#define FUSE_MAC0_WORD0 452 +#define FUSE_MAC0_WORD1 453 +#define FUSE_MAC1_WORD0 454 +#define FUSE_MAC1_WORD1 455 +#elif defined(CONFIG_IMX8QXP) #define FUSE_MAC0_WORD0 708 #define FUSE_MAC0_WORD1 709 #define FUSE_MAC1_WORD0 710 #define FUSE_MAC1_WORD1 711 +#endif void imx_get_mac_from_fuse(int dev_id, unsigned char *mac) { @@ -528,171 +535,3 @@ u32 get_cpu_rev(void) return (id << 12) | rev; } -#if CONFIG_IS_ENABLED(CPU) -struct cpu_imx_platdata { - const char *name; - const char *rev; - const char *type; - u32 cpurev; - u32 freq_mhz; -}; - -const char *get_imx8_type(u32 imxtype) -{ - switch (imxtype) { - case MXC_CPU_IMX8QXP: - case MXC_CPU_IMX8QXP_A0: - return "QXP"; - case MXC_CPU_IMX8QM: - return "QM"; - default: - return "??"; - } -} - -const char *get_imx8_rev(u32 rev) -{ - switch (rev) { - case CHIP_REV_A: - return "A"; - case CHIP_REV_B: - return "B"; - default: - return "?"; - } -} - -const char *get_core_name(void) -{ - if (is_cortex_a35()) - return "A35"; - else if (is_cortex_a53()) - return "A53"; - else if (is_cortex_a72()) - return "A72"; - else - return "?"; -} - -#if IS_ENABLED(CONFIG_IMX_SCU_THERMAL) -static int cpu_imx_get_temp(void) -{ - struct udevice *thermal_dev; - int cpu_tmp, ret; - - ret = uclass_get_device_by_name(UCLASS_THERMAL, "cpu-thermal0", - &thermal_dev); - - if (!ret) { - ret = thermal_get_temp(thermal_dev, &cpu_tmp); - if (ret) - return 0xdeadbeef; - } else { - return 0xdeadbeef; - } - - return cpu_tmp; -} -#else -static int cpu_imx_get_temp(void) -{ - return 0; -} -#endif - -int cpu_imx_get_desc(struct udevice *dev, char *buf, int size) -{ - struct cpu_imx_platdata *plat = dev_get_platdata(dev); - int ret; - - if (size < 100) - return -ENOSPC; - - ret = snprintf(buf, size, "NXP i.MX8%s Rev%s %s at %u MHz", - plat->type, plat->rev, plat->name, plat->freq_mhz); - - if (IS_ENABLED(CONFIG_IMX_SCU_THERMAL)) { - buf = buf + ret; - size = size - ret; - ret = snprintf(buf, size, " at %dC", cpu_imx_get_temp()); - } - - snprintf(buf + ret, size - ret, "\n"); - - return 0; -} - -static int cpu_imx_get_info(struct udevice *dev, struct cpu_info *info) -{ - struct cpu_imx_platdata *plat = dev_get_platdata(dev); - - info->cpu_freq = plat->freq_mhz * 1000; - info->features = BIT(CPU_FEAT_L1_CACHE) | BIT(CPU_FEAT_MMU); - return 0; -} - -static int cpu_imx_get_count(struct udevice *dev) -{ - return 4; -} - -static int cpu_imx_get_vendor(struct udevice *dev, char *buf, int size) -{ - snprintf(buf, size, "NXP"); - return 0; -} - -static const struct cpu_ops cpu_imx8_ops = { - .get_desc = cpu_imx_get_desc, - .get_info = cpu_imx_get_info, - .get_count = cpu_imx_get_count, - .get_vendor = cpu_imx_get_vendor, -}; - -static const struct udevice_id cpu_imx8_ids[] = { - { .compatible = "arm,cortex-a35" }, - { .compatible = "arm,cortex-a53" }, - { } -}; - -static ulong imx8_get_cpu_rate(void) -{ - ulong rate; - int ret; - int type = is_cortex_a35() ? SC_R_A35 : is_cortex_a53() ? - SC_R_A53 : SC_R_A72; - - ret = sc_pm_get_clock_rate(-1, type, SC_PM_CLK_CPU, - (sc_pm_clock_rate_t *)&rate); - if (ret) { - printf("Could not read CPU frequency: %d\n", ret); - return 0; - } - - return rate; -} - -static int imx8_cpu_probe(struct udevice *dev) -{ - struct cpu_imx_platdata *plat = dev_get_platdata(dev); - u32 cpurev; - - cpurev = get_cpu_rev(); - plat->cpurev = cpurev; - plat->name = get_core_name(); - plat->rev = get_imx8_rev(cpurev & 0xFFF); - plat->type = get_imx8_type((cpurev & 0xFF000) >> 12); - plat->freq_mhz = imx8_get_cpu_rate() / 1000000; - return 0; -} - -U_BOOT_DRIVER(cpu_imx8_drv) = { - .name = "imx8x_cpu", - .id = UCLASS_CPU, - .of_match = cpu_imx8_ids, - .ops = &cpu_imx8_ops, - .probe = imx8_cpu_probe, - .platdata_auto_alloc_size = sizeof(struct cpu_imx_platdata), - .flags = DM_FLAG_PRE_RELOC, -}; -#endif |