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authorAkshay Saraswat <akshay.s@samsung.com>2013-02-25 01:13:02 +0000
committerMinkyu Kang <mk7.kang@samsung.com>2013-03-12 17:06:09 +0900
commit7e30ad8bf3c6f7768158ad994b9180c6906fa5da (patch)
tree286e38465a3a30fa9a7cce405cde1b3f3401adcf /board/samsung
parent618766c09855f7167f510eafa89172ae44cae543 (diff)
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Exynos5: TMU: Add TMU init and status check
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> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'board/samsung')
-rw-r--r--board/samsung/smdk5250/smdk5250.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
index 0097b3f..217c6df 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)
{
@@ -71,6 +101,15 @@ static void board_enable_audio_codec(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