[S] Change in coreboot[main]: soc/mediatek/mt8196: Initialize watchdog

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/83926?usp=email )

(

8 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: soc/mediatek/mt8196: Initialize watchdog
......................................................................

soc/mediatek/mt8196: Initialize watchdog

Add watchdog support for MT8196.

TEST=build pass and WDT uart log
BUG=b:317009620

Change-Id: I9d5e71aa27d469855c2bd65abc5309d69a018750
Signed-off-by: Jarried Lin 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83926
Tested-by: build bot (Jenkins) 
Reviewed-by: Yidi Lin 
Reviewed-by: Yu-Ping Wu 
---
M src/soc/mediatek/mt8196/Makefile.mk
M src/soc/mediatek/mt8196/bootblock.c
A src/soc/mediatek/mt8196/include/soc/wdt.h
A src/soc/mediatek/mt8196/wdt.c
4 files changed, 34 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Yidi Lin: Looks good to me, approved
  Yu-Ping Wu: Looks good to me, approved

diff --git a/src/soc/mediatek/mt8196/Makefile.mk b/src/soc/mediatek/mt8196/Makefile.mk
index 44fa59e..75f21fc 100644
--- a/src/soc/mediatek/mt8196/Makefile.mk
+++ b/src/soc/mediatek/mt8196/Makefile.mk
@@ -10,6 +10,7 @@

bootblock-y += bootblock.c
 bootblock-y += ../common/mmu_operations.c
+bootblock-y += ../common/wdt.c ../common/wdt_req.c wdt.c

romstage-y += ../common/cbmem.c
 romstage-y += emi.c
diff --git a/src/soc/mediatek/mt8196/bootblock.c b/src/soc/mediatek/mt8196/bootblock.c
index f48e78c..770c603 100644
--- a/src/soc/mediatek/mt8196/bootblock.c
+++ b/src/soc/mediatek/mt8196/bootblock.c
@@ -2,8 +2,10 @@

#include <bootblock_common.h>
 #include <soc/mmu_operations.h>
+#include <soc/wdt.h>

void bootblock_soc_init(void)
 {
    mtk_mmu_init();
+	mtk_wdt_init();
 }
diff --git a/src/soc/mediatek/mt8196/include/soc/wdt.h b/src/soc/mediatek/mt8196/include/soc/wdt.h
new file mode 100644
index 0000000..a8299fb
--- /dev/null
+++ b/src/soc/mediatek/mt8196/include/soc/wdt.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+
+#ifndef SOC_MEDIATEK_MT8196_WDT_H
+#define SOC_MEDIATEK_MT8196_WDT_H
+
+#include <soc/wdt_common.h>
+
+#define MTK_WDT_SPM_THERMAL_VAL 1
+
+DEFINE_BIT(MTK_WDT_SPM_THERMAL_EN, 0)
+DEFINE_BIT(MTK_WDT_THERMAL_EN, 18)
+DEFINE_BIT(MTK_WDT_THERMAL_IRQ, 18)
+
+#endif /* SOC_MEDIATEK_MT8196_WDT_H */
diff --git a/src/soc/mediatek/mt8196/wdt.c b/src/soc/mediatek/mt8196/wdt.c
new file mode 100644
index 0000000..8b8db3b
--- /dev/null
+++ b/src/soc/mediatek/mt8196/wdt.c
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+
+/*
+ * This file is created based on MT8196 Functional Specification
+ * Chapter number: 7.3.4.4
+ */
+
+#include <device/mmio.h>
+#include <soc/addressmap.h>
+#include <soc/wdt.h>
+
+#define MTK_WDT_CLR_STATUS 0x230001FF
+
+void mtk_wdt_clr_status(void)
+{
+	write32(&mtk_wdt->wdt_mode, MTK_WDT_CLR_STATUS);
+}