soc/mediatek: Rename mtk_wdt_preinit() to mtk_wdt_set_req()

To simplify the calling sequence for mtk_wdt_preinit() and we always
adjust request setting in mtk_wdt_preinit(), we rename
mtk_wdt_preinit() to mtk_wdt_set_req() and call it in mtk_wdt_init().

From this modification, we can also enable thermal hardware reset
feature (CB:64676, CB:64675) in MT8192 and MT8195.

BUG=none
TEST=build pass

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I1904ff9387f7677a077068f2c3df923bd642ea3d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64861
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

src/soc/mediatek/common/include/soc/wdt.h

@@ -41,8 +41,8 @@ enum {
 
 static struct mtk_wdt_regs *const mtk_wdt = (void *)RGU_BASE;
 
-void mtk_wdt_preinit(void);
 int mtk_wdt_init(void);
 void mtk_wdt_clr_status(void);
+void mtk_wdt_set_req(void);
 
 #endif /* SOC_MEDIATEK_COMMON_WDT_H */

src/soc/mediatek/common/wdt.c

@@ -8,6 +8,7 @@
 #include <vendorcode/google/chromeos/chromeos.h>
 
 __weak void mtk_wdt_clr_status(void) { /* do nothing */ }
+__weak void mtk_wdt_set_req(void) { /* do nothing */ }
 
 static inline void mtk_wdt_swreset(void)
 {
@@ -32,6 +33,8 @@ int mtk_wdt_init(void)
 {
 	uint32_t wdt_sta;
 
+	mtk_wdt_set_req();
+
 	/* Writing mode register will clear status register */
 	wdt_sta = read32(&mtk_wdt->wdt_status);
 

src/soc/mediatek/mt8186/bootblock.c

@@ -12,7 +12,6 @@ void bootblock_soc_init(void)
 {
 	mtk_mmu_init();
 	bustracker_init();
-	mtk_wdt_preinit();
 	mtk_wdt_init();
 	mt_pll_init();
 	unmask_eint_event_mask();

src/soc/mediatek/mt8186/wdt.c

@@ -20,7 +20,7 @@ DEFINE_BIT(MTK_WDT_SPM_THERMAL_EN, 0)
 DEFINE_BIT(MTK_WDT_THERMAL_EN, 18)
 DEFINE_BIT(MTK_WDT_THERMAL_IRQ, 18)
 
-void mtk_wdt_preinit(void)
+void mtk_wdt_set_req(void)
 {
 	SET32_BITFIELDS(&mtk_wdt->wdt_req_mode,
 			MTK_WDT_SPM_THERMAL_EN, 0,

src/soc/mediatek/mt8192/wdt.c

@@ -12,7 +12,7 @@ DEFINE_BITFIELD(MTK_WDT_REQ_IRQ_KEY, 31, 24)
 DEFINE_BIT(MTK_WDT_THERMAL_EN, 18)
 DEFINE_BIT(MTK_WDT_THERMAL_IRQ, 18)
 
-void mtk_wdt_preinit(void)
+void mtk_wdt_set_req(void)
 {
 	SET32_BITFIELDS(&mtk_wdt->wdt_req_mode,
 			MTK_WDT_THERMAL_EN, 1,

src/soc/mediatek/mt8195/wdt.c

@@ -13,7 +13,7 @@ DEFINE_BITFIELD(MTK_WDT_REQ_IRQ_KEY, 31, 24)
 DEFINE_BIT(MTK_WDT_THERMAL_EN, 18)
 DEFINE_BIT(MTK_WDT_THERMAL_IRQ, 18)
 
-void mtk_wdt_preinit(void)
+void mtk_wdt_set_req(void)
 {
 	SET32_BITFIELDS(&mtk_wdt->wdt_req_mode,
 			MTK_WDT_THERMAL_EN, 1,