diff options
| author | Chanho Park <chanho61.park@samsung.com> | 2022-05-20 15:17:48 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2022-10-02 13:55:42 +0300 |
| commit | 0c91aa185a63324183c67eff2d3bb2af605f05a7 (patch) | |
| tree | e7038403f1c3c8e0634f7fbb09354a058b7b30b1 /drivers/watchdog | |
| parent | eadf8c4c737f6e88e1b1e86f2f52ea5acf28bb04 (diff) | |
| download | linux-0c91aa185a63324183c67eff2d3bb2af605f05a7.tar.xz | |
watchdog: s3c2410_wdt: support exynosautov9 watchdog
Like exynos850, exynosautov9 SoC also has two cpu watchdogs.
Unfortunately, some configurations are slightly different so we need to
add samsung,exynosautov9-wdt and separate drv data for those watchdogs.
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220520121750.71473-3-chanho61.park@samsung.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/s3c2410_wdt.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 95919392927f..d3fc8ed886ff 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -60,9 +60,13 @@ #define EXYNOS850_CLUSTER0_NONCPU_INT_EN 0x1244 #define EXYNOS850_CLUSTER1_NONCPU_OUT 0x1620 #define EXYNOS850_CLUSTER1_NONCPU_INT_EN 0x1644 +#define EXYNOSAUTOV9_CLUSTER1_NONCPU_OUT 0x1520 +#define EXYNOSAUTOV9_CLUSTER1_NONCPU_INT_EN 0x1544 #define EXYNOS850_CLUSTER0_WDTRESET_BIT 24 #define EXYNOS850_CLUSTER1_WDTRESET_BIT 23 +#define EXYNOSAUTOV9_CLUSTER0_WDTRESET_BIT 25 +#define EXYNOSAUTOV9_CLUSTER1_WDTRESET_BIT 24 /** * DOC: Quirk flags for different Samsung watchdog IP-cores @@ -236,6 +240,30 @@ static const struct s3c2410_wdt_variant drv_data_exynos850_cl1 = { QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, }; +static const struct s3c2410_wdt_variant drv_data_exynosautov9_cl0 = { + .mask_reset_reg = EXYNOS850_CLUSTER0_NONCPU_INT_EN, + .mask_bit = 2, + .mask_reset_inv = true, + .rst_stat_reg = EXYNOS5_RST_STAT_REG_OFFSET, + .rst_stat_bit = EXYNOSAUTOV9_CLUSTER0_WDTRESET_BIT, + .cnt_en_reg = EXYNOS850_CLUSTER0_NONCPU_OUT, + .cnt_en_bit = 7, + .quirks = QUIRK_HAS_WTCLRINT_REG | QUIRK_HAS_PMU_MASK_RESET | + QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, +}; + +static const struct s3c2410_wdt_variant drv_data_exynosautov9_cl1 = { + .mask_reset_reg = EXYNOSAUTOV9_CLUSTER1_NONCPU_INT_EN, + .mask_bit = 2, + .mask_reset_inv = true, + .rst_stat_reg = EXYNOS5_RST_STAT_REG_OFFSET, + .rst_stat_bit = EXYNOSAUTOV9_CLUSTER1_WDTRESET_BIT, + .cnt_en_reg = EXYNOSAUTOV9_CLUSTER1_NONCPU_OUT, + .cnt_en_bit = 7, + .quirks = QUIRK_HAS_WTCLRINT_REG | QUIRK_HAS_PMU_MASK_RESET | + QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, +}; + static const struct of_device_id s3c2410_wdt_match[] = { { .compatible = "samsung,s3c2410-wdt", .data = &drv_data_s3c2410 }, @@ -249,6 +277,8 @@ static const struct of_device_id s3c2410_wdt_match[] = { .data = &drv_data_exynos7 }, { .compatible = "samsung,exynos850-wdt", .data = &drv_data_exynos850_cl0 }, + { .compatible = "samsung,exynosautov9-wdt", + .data = &drv_data_exynosautov9_cl0 }, {}, }; MODULE_DEVICE_TABLE(of, s3c2410_wdt_match); @@ -630,8 +660,9 @@ s3c2410_get_wdt_drv_data(struct platform_device *pdev) } #ifdef CONFIG_OF - /* Choose Exynos850 driver data w.r.t. cluster index */ - if (variant == &drv_data_exynos850_cl0) { + /* Choose Exynos850/ExynosAutov9 driver data w.r.t. cluster index */ + if (variant == &drv_data_exynos850_cl0 || + variant == &drv_data_exynosautov9_cl0) { u32 index; int err; @@ -644,9 +675,11 @@ s3c2410_get_wdt_drv_data(struct platform_device *pdev) switch (index) { case 0: - return &drv_data_exynos850_cl0; + return variant; case 1: - return &drv_data_exynos850_cl1; + return (variant == &drv_data_exynos850_cl0) ? + &drv_data_exynos850_cl1 : + &drv_data_exynosautov9_cl1; default: dev_err(dev, "wrong cluster index: %u\n", index); return NULL; |