diff mbox series

[v7,12/16] watchdog: s3c2410_wdt: Add support for Google gs101 SoC

Message ID 20231211162331.435900-13-peter.griffin@linaro.org
State Superseded
Headers show
Series Add minimal Tensor/GS101 SoC support and Oriole/Pixel6 board | expand

Commit Message

Peter Griffin Dec. 11, 2023, 4:23 p.m. UTC
This patch adds the compatibles and drvdata for the Google
gs101 SoC found in Pixel 6, Pixel 6a & Pixel 6 pro phones.

Similar to Exynos850 it has two watchdog instances, one for
each cluster and has some control bits in PMU registers.

gs101 also has the dbgack_mask bit in wtcon register, so
we also enable QUIRK_HAS_DBGACK_BIT.

Tested-by: Will McVicker <willmcvicker@google.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
 drivers/watchdog/s3c2410_wdt.c | 49 ++++++++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 5 deletions(-)

Comments

Alim Akhtar Dec. 13, 2023, 4:42 p.m. UTC | #1
> -----Original Message-----
> From: Peter Griffin <peter.griffin@linaro.org>
> Sent: Monday, December 11, 2023 9:53 PM
> To: robh+dt@kernel.org; krzysztof.kozlowski+dt@linaro.org;
> mturquette@baylibre.com; conor+dt@kernel.org; sboyd@kernel.org;
> tomasz.figa@gmail.com; s.nawrocki@samsung.com; linus.walleij@linaro.org;
> wim@linux-watchdog.org; linux@roeck-us.net; catalin.marinas@arm.com;
> will@kernel.org; arnd@arndb.de; olof@lixom.net;
> gregkh@linuxfoundation.org; jirislaby@kernel.org;
> cw00.choi@samsung.com; alim.akhtar@samsung.com
> Cc: peter.griffin@linaro.org; tudor.ambarus@linaro.org;
> andre.draszik@linaro.org; semen.protsenko@linaro.org;
> saravanak@google.com; willmcvicker@google.com; soc@kernel.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> samsung-soc@vger.kernel.org; linux-clk@vger.kernel.org; linux-
> gpio@vger.kernel.org; linux-watchdog@vger.kernel.org; kernel-
> team@android.com; linux-serial@vger.kernel.org
> Subject: [PATCH v7 12/16] watchdog: s3c2410_wdt: Add support for Google
> gs101 SoC
> 
> This patch adds the compatibles and drvdata for the Google
> gs101 SoC found in Pixel 6, Pixel 6a & Pixel 6 pro phones.
> 
> Similar to Exynos850 it has two watchdog instances, one for each cluster
and
> has some control bits in PMU registers.
> 
> gs101 also has the dbgack_mask bit in wtcon register, so we also enable
> QUIRK_HAS_DBGACK_BIT.
> 
> Tested-by: Will McVicker <willmcvicker@google.com>
> Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
> Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
> ---
>  drivers/watchdog/s3c2410_wdt.c | 49
> ++++++++++++++++++++++++++++++----
>  1 file changed, 44 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/watchdog/s3c2410_wdt.c
> b/drivers/watchdog/s3c2410_wdt.c index b7a03668f743..c3046610ab5d
> 100644
> --- a/drivers/watchdog/s3c2410_wdt.c
> +++ b/drivers/watchdog/s3c2410_wdt.c
> @@ -69,6 +69,13 @@
>  #define EXYNOSAUTOV9_CLUSTER0_WDTRESET_BIT	25
>  #define EXYNOSAUTOV9_CLUSTER1_WDTRESET_BIT	24
> 
> 
[snip]
>  static const struct of_device_id s3c2410_wdt_match[] = {
> +	{ .compatible = "google,gs101-wdt",
> +	  .data = &drv_data_gs101_cl0 },
>  	{ .compatible = "samsung,s3c2410-wdt",
>  	  .data = &drv_data_s3c2410 },
>  	{ .compatible = "samsung,s3c6410-wdt", @@ -605,9 +640,10 @@
> s3c2410_get_wdt_drv_data(struct platform_device *pdev, struct
> s3c2410_wdt *wdt)
>  	}
> 
>  #ifdef CONFIG_OF
> -	/* Choose Exynos850/ExynosAutov9 driver data w.r.t. cluster index
> */
> +	/* Choose Exynos9 SoC family driver data w.r.t. cluster index */
Exynos9 introduction is out of context here, so you can leave it as original
comment, it is not adding anything here.

>  	if (variant == &drv_data_exynos850_cl0 ||
> -	    variant == &drv_data_exynosautov9_cl0) {
> +	    variant == &drv_data_exynosautov9_cl0 ||
> +	    variant == &drv_data_gs101_cl0) {
>  		u32 index;
[snip]
> --
> 2.43.0.472.g3155946c3a-goog
Krzysztof Kozlowski Dec. 13, 2023, 7:14 p.m. UTC | #2
On 13/12/2023 17:42, Alim Akhtar wrote:
>>  static const struct of_device_id s3c2410_wdt_match[] = {
>> +	{ .compatible = "google,gs101-wdt",
>> +	  .data = &drv_data_gs101_cl0 },
>>  	{ .compatible = "samsung,s3c2410-wdt",
>>  	  .data = &drv_data_s3c2410 },
>>  	{ .compatible = "samsung,s3c6410-wdt", @@ -605,9 +640,10 @@
>> s3c2410_get_wdt_drv_data(struct platform_device *pdev, struct
>> s3c2410_wdt *wdt)
>>  	}
>>
>>  #ifdef CONFIG_OF
>> -	/* Choose Exynos850/ExynosAutov9 driver data w.r.t. cluster index
>> */
>> +	/* Choose Exynos9 SoC family driver data w.r.t. cluster index */
> Exynos9 introduction is out of context here, so you can leave it as original
> comment, it is not adding anything here.

Dropped that hunk and applied.

Best regards,
Krzysztof
Krzysztof Kozlowski Dec. 13, 2023, 7:16 p.m. UTC | #3
On Mon, 11 Dec 2023 16:23:27 +0000, Peter Griffin wrote:
> This patch adds the compatibles and drvdata for the Google
> gs101 SoC found in Pixel 6, Pixel 6a & Pixel 6 pro phones.
> 
> Similar to Exynos850 it has two watchdog instances, one for
> each cluster and has some control bits in PMU registers.
> 
> gs101 also has the dbgack_mask bit in wtcon register, so
> we also enable QUIRK_HAS_DBGACK_BIT.
> 
> [...]

Applied, thanks!

[12/16] watchdog: s3c2410_wdt: Add support for Google gs101 SoC
        https://git.kernel.org/krzk/linux/c/796bb2d3a16c1e786ed51183162783405b5c8f85

Best regards,
diff mbox series

Patch

diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index b7a03668f743..c3046610ab5d 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -69,6 +69,13 @@ 
 #define EXYNOSAUTOV9_CLUSTER0_WDTRESET_BIT	25
 #define EXYNOSAUTOV9_CLUSTER1_WDTRESET_BIT	24
 
+#define GS_CLUSTER0_NONCPU_OUT			0x1220
+#define GS_CLUSTER1_NONCPU_OUT			0x1420
+#define GS_CLUSTER0_NONCPU_INT_EN		0x1244
+#define GS_CLUSTER1_NONCPU_INT_EN		0x1444
+#define GS_CLUSTER2_NONCPU_INT_EN		0x1644
+#define GS_RST_STAT_REG_OFFSET			0x3B44
+
 /**
  * DOC: Quirk flags for different Samsung watchdog IP-cores
  *
@@ -270,7 +277,35 @@  static const struct s3c2410_wdt_variant drv_data_exynosautov9_cl1 = {
 		  QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN,
 };
 
+static const struct s3c2410_wdt_variant drv_data_gs101_cl0 = {
+	.mask_reset_reg = GS_CLUSTER0_NONCPU_INT_EN,
+	.mask_bit = 2,
+	.mask_reset_inv = true,
+	.rst_stat_reg = GS_RST_STAT_REG_OFFSET,
+	.rst_stat_bit = 0,
+	.cnt_en_reg = GS_CLUSTER0_NONCPU_OUT,
+	.cnt_en_bit = 8,
+	.quirks = QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_MASK_RESET |
+		  QUIRK_HAS_PMU_CNT_EN | QUIRK_HAS_WTCLRINT_REG |
+		  QUIRK_HAS_DBGACK_BIT,
+};
+
+static const struct s3c2410_wdt_variant drv_data_gs101_cl1 = {
+	.mask_reset_reg = GS_CLUSTER1_NONCPU_INT_EN,
+	.mask_bit = 2,
+	.mask_reset_inv = true,
+	.rst_stat_reg = GS_RST_STAT_REG_OFFSET,
+	.rst_stat_bit = 1,
+	.cnt_en_reg = GS_CLUSTER1_NONCPU_OUT,
+	.cnt_en_bit = 7,
+	.quirks = QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_MASK_RESET |
+		  QUIRK_HAS_PMU_CNT_EN | QUIRK_HAS_WTCLRINT_REG |
+		  QUIRK_HAS_DBGACK_BIT,
+};
+
 static const struct of_device_id s3c2410_wdt_match[] = {
+	{ .compatible = "google,gs101-wdt",
+	  .data = &drv_data_gs101_cl0 },
 	{ .compatible = "samsung,s3c2410-wdt",
 	  .data = &drv_data_s3c2410 },
 	{ .compatible = "samsung,s3c6410-wdt",
@@ -605,9 +640,10 @@  s3c2410_get_wdt_drv_data(struct platform_device *pdev, struct s3c2410_wdt *wdt)
 	}
 
 #ifdef CONFIG_OF
-	/* Choose Exynos850/ExynosAutov9 driver data w.r.t. cluster index */
+	/* Choose Exynos9 SoC family driver data w.r.t. cluster index */
 	if (variant == &drv_data_exynos850_cl0 ||
-	    variant == &drv_data_exynosautov9_cl0) {
+	    variant == &drv_data_exynosautov9_cl0 ||
+	    variant == &drv_data_gs101_cl0) {
 		u32 index;
 		int err;
 
@@ -620,9 +656,12 @@  s3c2410_get_wdt_drv_data(struct platform_device *pdev, struct s3c2410_wdt *wdt)
 		case 0:
 			break;
 		case 1:
-			variant = (variant == &drv_data_exynos850_cl0) ?
-				&drv_data_exynos850_cl1 :
-				&drv_data_exynosautov9_cl1;
+			if (variant == &drv_data_exynos850_cl0)
+				variant = &drv_data_exynos850_cl1;
+			else if (variant == &drv_data_exynosautov9_cl0)
+				variant = &drv_data_exynosautov9_cl1;
+			else if (variant == &drv_data_gs101_cl0)
+				variant = &drv_data_gs101_cl1;
 			break;
 		default:
 			return dev_err_probe(dev, -EINVAL, "wrong cluster index: %u\n", index);