[v7,0/3] watchdog: mt8195: add wdt support

Supports MT8195 watchdog device. Supports MT8195 watchdog reset-controller feature.

Change since v6:
  -move the reset-controller header file to 'include/dt-bindings/reset', in order to be consistent with [1]
   [1] https://patchwork.kernel.org/project/linux-mediatek/patch/20210714121116.v2.1.I514d9aafff3a062f751b37d3fea7402f67595b86@changeid/

Change since v5:
  -fix author and license in [v5,2/3].

Change since v4:
  -fix name formatting in Signed-off-bys and author in [v4,3/3].

Change since v3:
  -fix name formatting in Signed-off-bys and author for all the patches.

Change since v2:
  -fix typos in [v2,0/3] [v2,1/3] [v2,2/3].

Change since v1:
  -Remove the unneeded tag in [v1,1/3] [v1,2/3] [v1,3/3]
  -Add of_device_id of MT8195 in [v1,3/3]
  -use more proper prefixes, such as "dt-bindings: mediatek: mt8195:"
  -provide more information in the cover letter

Christine Zhu (3):
  dt-bindings: mediatek: mt8195: update mtk-wdt document
  dt-bindings: reset: mt8195: add toprgu reset-controller header file
  watchdog: mediatek: mt8195: add wdt support

 .../devicetree/bindings/watchdog/mtk-wdt.txt  |  1 +
 drivers/watchdog/mtk_wdt.c                    |  6 ++++
 include/dt-bindings/reset/mt8195-resets.h     | 29 +++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 include/dt-bindings/reset/mt8195-resets.h

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Update mtk-wdt document for MT8195 platform.

Signed-off-by: Christine Zhu <redacted>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/watchdog/mtk-wdt.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
index e36ba60de829..ca9b67ab7c44 100644
--- a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt

@@ -13,6 +13,7 @@ Required properties:
 	"mediatek,mt8183-wdt": for MT8183
 	"mediatek,mt8516-wdt", "mediatek,mt6589-wdt": for MT8516
 	"mediatek,mt8192-wdt": for MT8192
+	"mediatek,mt8195-wdt": for MT8195
 
 - reg : Specifies base physical address and size of the registers.
 

-- 
2.18.0
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Add toprgu reset-controller header file for MT8195 platform.

Signed-off-by: Christine Zhu <redacted>
---
 include/dt-bindings/reset/mt8195-resets.h | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 include/dt-bindings/reset/mt8195-resets.h

diff --git a/include/dt-bindings/reset/mt8195-resets.h b/include/dt-bindings/reset/mt8195-resets.h
new file mode 100644
index 000000000000..2a7335d56c59
--- /dev/null
+++ b/include/dt-bindings/reset/mt8195-resets.h

@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)*/
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Christine Zhu <christine.zhu@mediatek.com>
+ */
+
+#ifndef _DT_BINDINGS_RESET_CONTROLLER_MT8195
+#define _DT_BINDINGS_RESET_CONTROLLER_MT8195
+
+#define MT8195_TOPRGU_CONN_MCU_SW_RST          0
+#define MT8195_TOPRGU_INFRA_GRST_SW_RST        1
+#define MT8195_TOPRGU_APU_SW_RST               2
+#define MT8195_TOPRGU_INFRA_AO_GRST_SW_RST     6
+#define MT8195_TOPRGU_MMSYS_SW_RST             7
+#define MT8195_TOPRGU_MFG_SW_RST               8
+#define MT8195_TOPRGU_VENC_SW_RST              9
+#define MT8195_TOPRGU_VDEC_SW_RST              10
+#define MT8195_TOPRGU_IMG_SW_RST               11
+#define MT8195_TOPRGU_APMIXEDSYS_SW_RST        13
+#define MT8195_TOPRGU_AUDIO_SW_RST             14
+#define MT8195_TOPRGU_CAMSYS_SW_RST            15
+#define MT8195_TOPRGU_EDPTX_SW_RST             16
+#define MT8195_TOPRGU_ADSPSYS_SW_RST           21
+#define MT8195_TOPRGU_DPTX_SW_RST              22
+#define MT8195_TOPRGU_SPMI_MST_SW_RST          23
+
+#define MT8195_TOPRGU_SW_RST_NUM               16
+
+#endif  /* _DT_BINDINGS_RESET_CONTROLLER_MT8195 */

\ No newline at end of file
-- 
2.18.0
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Support MT8195 watchdog device.

Signed-off-by: Christine Zhu <redacted>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Tzung-Bi Shih <redacted>
---
 drivers/watchdog/mtk_wdt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index 97ca993bd009..3c3f8adc45ac 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c

@@ -12,6 +12,7 @@
 #include <dt-bindings/reset-controller/mt2712-resets.h>
 #include <dt-bindings/reset-controller/mt8183-resets.h>
 #include <dt-bindings/reset-controller/mt8192-resets.h>
+#include <dt-bindings/reset/mt8195-resets.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/init.h>

@@ -81,6 +82,10 @@ static const struct mtk_wdt_data mt8192_data = {
 	.toprgu_sw_rst_num = MT8192_TOPRGU_SW_RST_NUM,
 };
 
+static const struct mtk_wdt_data mt8195_data = {
+	.toprgu_sw_rst_num = MT8195_TOPRGU_SW_RST_NUM,
+};
+
 static int toprgu_reset_update(struct reset_controller_dev *rcdev,
 			       unsigned long id, bool assert)
 {

@@ -341,6 +346,7 @@ static const struct of_device_id mtk_wdt_dt_ids[] = {
 	{ .compatible = "mediatek,mt6589-wdt" },
 	{ .compatible = "mediatek,mt8183-wdt", .data = &mt8183_data },
 	{ .compatible = "mediatek,mt8192-wdt", .data = &mt8192_data },
+	{ .compatible = "mediatek,mt8195-wdt", .data = &mt8195_data },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, mtk_wdt_dt_ids);

-- 
2.18.0
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On Mon, 26 Jul 2021 20:29:01 +0800, Christine Zhu wrote:

Add toprgu reset-controller header file for MT8195 platform.

Signed-off-by: Christine Zhu <redacted>
---
 include/dt-bindings/reset/mt8195-resets.h | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 include/dt-bindings/reset/mt8195-resets.h

Acked-by: Rob Herring <robh@kernel.org>

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On Mon, Jul 26, 2021 at 8:30 PM Christine Zhu
[off-list ref] wrote:

Just realized the patch has been applied in commit b326f2c85f3d
("dt-bindings: watchdog: Add compatible for Mediatek MT8195").  Could
you rebase the series to the latest tree and resend?

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