This adds call to tmu_init() and TMU boot time analysis for the SoC temperature threshold breach.
Signed-off-by: Akshay Saraswat akshay.s@samsung.com Acked-by: Simon Glass sjg@chromium.org --- Changes since v10: - None.
board/samsung/smdk5250/smdk5250.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)
diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c index ffc5ee5..89247d9 100644 --- a/board/samsung/smdk5250/smdk5250.c +++ b/board/samsung/smdk5250/smdk5250.c @@ -37,9 +37,39 @@ #include <asm/arch/dp_info.h> #include <power/pmic.h> #include <power/max77686_pmic.h> +#include <tmu.h>
DECLARE_GLOBAL_DATA_PTR;
+#if defined CONFIG_EXYNOS_TMU +/* + * Boot Time Thermal Analysis for SoC temperature threshold breach + */ +static void boot_temp_check(void) +{ + int temp; + + switch (tmu_monitor(&temp)) { + /* Status TRIPPED ans WARNING means corresponding threshold breach */ + case TMU_STATUS_TRIPPED: + puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n"); + set_ps_hold_ctrl(); + hang(); + break; + case TMU_STATUS_WARNING: + puts("EXYNOS_TMU: WARNING! Temperature very high\n"); + break; + /* + * TMU_STATUS_INIT means something is wrong with temperature sensing + * and TMU status was changed back from NORMAL to INIT. + */ + case TMU_STATUS_INIT: + default: + debug("EXYNOS_TMU: Unknown TMU state\n"); + } +} +#endif + #ifdef CONFIG_USB_EHCI_EXYNOS int board_usb_vbus_init(void) { @@ -59,6 +89,15 @@ int board_usb_vbus_init(void) int board_init(void) { gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL); + +#if defined CONFIG_EXYNOS_TMU + if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) { + debug("%s: Failed to init TMU\n", __func__); + return -1; + } + boot_temp_check(); +#endif + #ifdef CONFIG_EXYNOS_SPI spi_init(); #endif