diff options
| -rw-r--r-- | arch/arm/include/asm/arch-imx9/imx-regs.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx9/soc.c | 81 |
2 files changed, 83 insertions, 1 deletions
diff --git a/arch/arm/include/asm/arch-imx9/imx-regs.h b/arch/arm/include/asm/arch-imx9/imx-regs.h index 065fd1f..76d241e 100644 --- a/arch/arm/include/asm/arch-imx9/imx-regs.h +++ b/arch/arm/include/asm/arch-imx9/imx-regs.h @@ -48,6 +48,9 @@ #define BCTRL_GPR_ENET_QOS_INTF_SEL_RGMII (0x1 << 1) #define BCTRL_GPR_ENET_QOS_CLK_GEN_EN (0x1 << 0) +#define MARKETING_GRADING_MASK GENMASK(5, 4) +#define SPEED_GRADING_MASK GENMASK(11, 6) + #if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__)) #include <asm/types.h> #include <stdbool.h> diff --git a/arch/arm/mach-imx/imx9/soc.c b/arch/arm/mach-imx/imx9/soc.c index e476581..ca312ff 100644 --- a/arch/arm/mach-imx/imx9/soc.c +++ b/arch/arm/mach-imx/imx9/soc.c @@ -26,12 +26,15 @@ #include <env_internal.h> #include <errno.h> #include <fdt_support.h> +#include <imx_thermal.h> #include <linux/bitops.h> +#include <linux/bitfield.h> +#include <linux/delay.h> +#include <thermal.h> #include <asm/setup.h> #include <asm/bootm.h> #include <asm/arch-imx/cpu.h> #include <asm/mach-imx/s400_api.h> -#include <linux/delay.h> #include <fuse.h> DECLARE_GLOBAL_DATA_PTR; @@ -73,6 +76,82 @@ int mmc_get_env_dev(void) } #endif +/* + * SPEED_GRADE[5:4] SPEED_GRADE[3:0] MHz + * xx 0000 2300 + * xx 0001 2200 + * xx 0010 2100 + * xx 0011 2000 + * xx 0100 1900 + * xx 0101 1800 + * xx 0110 1700 + * xx 0111 1600 + * xx 1000 1500 + * xx 1001 1400 + * xx 1010 1300 + * xx 1011 1200 + * xx 1100 1100 + * xx 1101 1000 + * xx 1110 900 + * xx 1111 800 + */ +u32 get_cpu_speed_grade_hz(void) +{ + u32 speed, max_speed; + u32 val; + + fuse_read(2, 3, &val); + val = FIELD_GET(SPEED_GRADING_MASK, val) & 0xF; + + speed = MHZ(2300) - val * MHZ(100); + + if (is_imx93()) + max_speed = MHZ(1700); + + /* In case the fuse of speed grade not programmed */ + if (speed > max_speed) + speed = max_speed; + + return speed; +} + +/* + * `00` - Consumer 0C to 95C + * `01` - Ext. Consumer -20C to 105C + * `10` - Industrial -40C to 105C + * `11` - Automotive -40C to 125C + */ +u32 get_cpu_temp_grade(int *minc, int *maxc) +{ + u32 val; + + fuse_read(2, 3, &val); + val = FIELD_GET(MARKETING_GRADING_MASK, val); + + if (minc && maxc) { + if (val == TEMP_AUTOMOTIVE) { + *minc = -40; + *maxc = 125; + } else if (val == TEMP_INDUSTRIAL) { + *minc = -40; + *maxc = 105; + } else if (val == TEMP_EXTCOMMERCIAL) { + if (is_imx93()) { + /* imx93 only has extended industrial*/ + *minc = -40; + *maxc = 125; + } else { + *minc = -20; + *maxc = 105; + } + } else { + *minc = 0; + *maxc = 95; + } + } + return val; +} + static void set_cpu_info(struct sentinel_get_info_data *info) { gd->arch.soc_rev = info->soc; |