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soc/mediatek: Only update required bits when triggering WDT reset 

To prevent to modify original value of wdt_mode, we use setbits32 to
update required bits.

BUG=b:218420108
TEST=build pass

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I743c1af3583c18ec8500fc1eb89f31cdbce5317c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61729
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Rex-BC Chen 2022-02-08 18:56:15 +08:00 committed by Hung-Te Lin
parent 9813544151
commit 3c00c7ec6b
1 changed files with 1 additions and 1 deletions
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2
src/soc/mediatek/common/wdt.c
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@ -32,7 +32,7 @@ int mtk_wdt_init(void)
* console (either in SRAM or DRAM) can be flushed. * console (either in SRAM or DRAM) can be flushed.
*/ */
dcache_clean_all(); dcache_clean_all();
write32(&mtk_wdt->wdt_mode, MTK_WDT_MODE_EXTEN | MTK_WDT_MODE_KEY); setbits32(&mtk_wdt->wdt_mode, MTK_WDT_MODE_EXTEN | MTK_WDT_MODE_KEY);
write32(&mtk_wdt->wdt_swrst, MTK_WDT_SWRST_KEY); write32(&mtk_wdt->wdt_swrst, MTK_WDT_SWRST_KEY);
} else if (wdt_sta & MTK_WDT_STA_SW_RST) } else if (wdt_sta & MTK_WDT_STA_SW_RST)
printk(BIOS_INFO, "normal software reboot\n"); printk(BIOS_INFO, "normal software reboot\n");