diff options
| -rw-r--r-- | arch/arm/mach-rockchip/rk3576/rk3576.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/rk3576/rk3576.c b/arch/arm/mach-rockchip/rk3576/rk3576.c index ba5c94b4b3d..2b1318f9532 100644 --- a/arch/arm/mach-rockchip/rk3576/rk3576.c +++ b/arch/arm/mach-rockchip/rk3576/rk3576.c @@ -3,6 +3,10 @@ * Copyright (c) 2024 Rockchip Electronics Co., Ltd */ +#define LOG_CATEGORY LOGC_ARCH + +#include <dm.h> +#include <misc.h> #include <asm/armv8/mmu.h> #include <asm/arch-rockchip/bootrom.h> #include <asm/arch-rockchip/hardware.h> @@ -153,3 +157,47 @@ int arch_cpu_init(void) return 0; } + +#define RK3576_OTP_CPU_CODE_OFFSET 0x02 +#define RK3576_OTP_SPECIFICATION_OFFSET 0x08 + +int checkboard(void) +{ + u8 cpu_code[2], specification; + struct udevice *dev; + char suffix[2]; + int ret; + + if (!IS_ENABLED(CONFIG_ROCKCHIP_OTP) || !CONFIG_IS_ENABLED(MISC)) + return 0; + + ret = uclass_get_device_by_driver(UCLASS_MISC, + DM_DRIVER_GET(rockchip_otp), &dev); + if (ret) { + log_debug("Could not find otp device, ret=%d\n", ret); + return 0; + } + + /* cpu-code: SoC model, e.g. 0x35 0x76 */ + ret = misc_read(dev, RK3576_OTP_CPU_CODE_OFFSET, cpu_code, 2); + if (ret < 0) { + log_debug("Could not read cpu-code, ret=%d\n", ret); + return 0; + } + + /* specification: SoC variant, e.g. 0xA for RK3576J */ + ret = misc_read(dev, RK3576_OTP_SPECIFICATION_OFFSET, &specification, 1); + if (ret < 0) { + log_debug("Could not read specification, ret=%d\n", ret); + return 0; + } + specification &= 0x1f; + + /* for RK3576J i.e. '@' + 0xA = 'J' */ + suffix[0] = specification > 1 ? '@' + specification : '\0'; + suffix[1] = '\0'; + + printf("SoC: RK%02x%02x%s\n", cpu_code[0], cpu_code[1], suffix); + + return 0; +} |