From: Joao Paulo Goncalves joao.goncalves@toradex.com
AM62x SoC is available in multiple temperature grade: - Commercial: 0° to 95° C - Industrial: -40° to 105° C - Automotive: -40° to 125° C
Add a new function that returns the am62 max temperature value accordingly to its temperature grade in Celsius.
Signed-off-by: Joao Paulo Goncalves joao.goncalves@toradex.com Signed-off-by: Francesco Dolcini francesco.dolcini@toradex.com --- arch/arm/mach-k3/include/mach/am62_hardware.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/arch/arm/mach-k3/include/mach/am62_hardware.h b/arch/arm/mach-k3/include/mach/am62_hardware.h index 54380f36e161..9c4c6c542b63 100644 --- a/arch/arm/mach-k3/include/mach/am62_hardware.h +++ b/arch/arm/mach-k3/include/mach/am62_hardware.h @@ -42,6 +42,10 @@
#define JTAG_DEV_FEATURE_NO_PRU 0x4
+#define JTAG_DEV_TEMP_COMMERCIAL 0x3 +#define JTAG_DEV_TEMP_INDUSTRIAL 0x4 +#define JTAG_DEV_TEMP_AUTOMOTIVE 0x5 + #define CTRLMMR_MAIN_DEVSTAT (WKUP_CTRL_MMR0_BASE + 0x30) #define MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK GENMASK(6, 3) #define MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT 3 @@ -102,6 +106,19 @@ static inline int k3_get_temp_grade(void) return (full_devid & JTAG_DEV_TEMP_MASK) >> JTAG_DEV_TEMP_SHIFT; }
+static inline int k3_get_max_temp(void) +{ + switch (k3_get_temp_grade()) { + case JTAG_DEV_TEMP_INDUSTRIAL: + return 105; + case JTAG_DEV_TEMP_AUTOMOTIVE: + return 125; + case JTAG_DEV_TEMP_COMMERCIAL: + default: + return 95; + } +} + static inline int k3_has_pru(void) { u32 full_devid = readl(CTRLMMR_WKUP_JTAG_DEVICE_ID);