[U-Boot] [PATCH 4/7 v5] EXYNOS5: TMU: Add TMU init and status check

[Akshay Saraswat]

This adds call to tmu_init() and TMU boot time analysis
for the SoC temperature threshold breach.

Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>
---
Changes since v4:
	- Replaced board polling with initial SoC temperature analysis for any possible threshold breach. 

 board/samsung/smdk5250/smdk5250.c |   35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
index 7a5f132..7b9a8c5 100644
--- a/board/samsung/smdk5250/smdk5250.c
+++ b/board/samsung/smdk5250/smdk5250.c
@@ -35,9 +35,35 @@
 #include <asm/arch/sromc.h>
 #include <asm/arch/dp_info.h>
 #include <power/pmic.h>
+#include <tmu.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#if defined CONFIG_EXYNOS_TMU
+/*
+ * Boot Time Thermal Analysis for SoC temperature threshold breach
+ */
+void boot_temp_check(void)
+{
+	int temp;
+
+	switch (tmu_monitor(&temp)) {
+	case TMU_STATUS_TRIPPED:
+		puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
+		board_poweroff();
+		break;
+	case TMU_STATUS_WARNING:
+		puts("EXYNOS_TMU: WARNING! Temperature very high\n");
+		break;
+	case TMU_STATUS_NORMAL:
+		break;
+	case TMU_STATUS_INIT:
+	default:
+		debug("Unknown TMU state\n");
+	}
+}
+#endif
+
 #ifdef CONFIG_USB_EHCI_EXYNOS
 int board_usb_vbus_init(void)
 {
@@ -57,6 +83,15 @@ 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)) {
+		debug("%s: Failed to init TMU\n", __func__);
+		return -1;
+	}
+	boot_temp_check();
+#endif
+
 #ifdef CONFIG_EXYNOS_SPI
 	spi_init();
 #endif
-- 
1.7.9.5