[PATCH v3 3/3] watchdog: mtk_wdt: add support for mt6577
From: Boris Lysov <hidden>
Date: 2021-05-13 02:53:51
Also in:
linux-mediatek
Subsystem:
the rest, watchdog device drivers · Maintainers:
Linus Torvalds, Wim Van Sebroeck, Guenter Roeck
This patch adds support for watchdog used by mt6577 and related SoCs such as mt6575 and mt8317. These watchdogs are known for having shifted WDT_MODE and SWSYSRST registers and using different SWSYSRST_KEY value. Signed-off-by: Boris Lysov <redacted> --- drivers/watchdog/mtk_wdt.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index 0878fa33dffe..91d498b5d212 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c@@ -54,6 +54,10 @@ #define MT2712_SWSYSRST_KEY_SHIFT 24 // unlock_key [31:24] #define MT2712_SWSYSRST_KEY 0x88 +#define MT6577_WDT_MODE_KEY_SHIFT 8 // unlock_key [15:8] +#define MT6577_SWSYSRST_KEY_SHIFT 8 // unlock_key [15:8] +#define MT6577_SWSYSRST_KEY 0x15 + #define MT6589_WDT_MODE_KEY_SHIFT 24 // unlock_key [31:24] #define MT6589_SWSYSRST_KEY_SHIFT 24 // unlock_key [31:24] #define MT6589_SWSYSRST_KEY 0x88
@@ -94,6 +98,13 @@ static const struct mtk_wdt_data mt2712_data = { .wdt_swsys_rst_key = MT2712_SWSYSRST_KEY, }; +static const struct mtk_wdt_data mt6577_data = { + .toprgu_sw_rst_num = -1, + .wdt_mode_key_shift = MT6577_WDT_MODE_KEY_SHIFT, + .wdt_swsys_rst_key_shift = MT6577_SWSYSRST_KEY_SHIFT, + .wdt_swsys_rst_key = MT6577_SWSYSRST_KEY, +}; + static const struct mtk_wdt_data mt6589_data = { .toprgu_sw_rst_num = -1, .wdt_mode_key_shift = MT6589_WDT_MODE_KEY_SHIFT,
@@ -376,6 +387,7 @@ static int mtk_wdt_resume(struct device *dev) static const struct of_device_id mtk_wdt_dt_ids[] = { { .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data }, + { .compatible = "mediatek,mt6577-wdt", .data = &mt6577_data }, { .compatible = "mediatek,mt6589-wdt", .data = &mt6589_data }, { .compatible = "mediatek,mt8183-wdt", .data = &mt8183_data }, { .compatible = "mediatek,mt8192-wdt", .data = &mt8192_data },
--
2.20.1