mediatek: copy patches-6.1 to patches-6.6

Copy patches from patches-6.1 to patches-6.6. No changes.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 125 insertions, 0 deletions

diff --git a/target/linux/mediatek/patches-6.6/251-v6.8-watchdog-mediatek-mt7988-add-wdt-support.patch b/target/linux/mediatek/patches-6.6/251-v6.8-watchdog-mediatek-mt7988-add-wdt-support.patch
new file mode 100644
index 0000000000..cb49ce1d25
--- /dev/null
+++ b/target/linux/mediatek/patches-6.6/251-v6.8-watchdog-mediatek-mt7988-add-wdt-support.patch
@@ -0,0 +1,125 @@
+From 137c9e08e5e542d58aa606b0bb4f0990117309a0 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Mon, 20 Nov 2023 18:22:31 +0000
+Subject: [PATCH] watchdog: mediatek: mt7988: add wdt support
+
+Add support for watchdog and reset generator unit of the MediaTek
+MT7988 SoC.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+Reviewed-by: Guenter Roeck <linux@roeck-us.net>
+Link: https://lore.kernel.org/r/c0cf5f701801cce60470853fa15f1d9dced78c4f.1700504385.git.daniel@makrotopia.org
+Signed-off-by: Guenter Roeck <linux@roeck-us.net>
+Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
+---
+ drivers/watchdog/mtk_wdt.c | 42 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 42 insertions(+)
+
+--- a/drivers/watchdog/mtk_wdt.c
++++ b/drivers/watchdog/mtk_wdt.c
+@@ -56,9 +56,13 @@
+ #define WDT_SWSYSRST		0x18U
+ #define WDT_SWSYS_RST_KEY	0x88000000
+ 
++#define WDT_SWSYSRST_EN		0xfc
++
+ #define DRV_NAME		"mtk-wdt"
+ #define DRV_VERSION		"1.0"
+ 
++#define MT7988_TOPRGU_SW_RST_NUM	24
++
+ static bool nowayout = WATCHDOG_NOWAYOUT;
+ static unsigned int timeout;
+ 
+@@ -68,10 +72,12 @@ struct mtk_wdt_dev {
+ 	spinlock_t lock; /* protects WDT_SWSYSRST reg */
+ 	struct reset_controller_dev rcdev;
+ 	bool disable_wdt_extrst;
++	bool has_swsysrst_en;
+ };
+ 
+ struct mtk_wdt_data {
+ 	int toprgu_sw_rst_num;
++	bool has_swsysrst_en;
+ };
+ 
+ static const struct mtk_wdt_data mt2712_data = {
+@@ -82,6 +88,11 @@ static const struct mtk_wdt_data mt7986_
+ 	.toprgu_sw_rst_num = MT7986_TOPRGU_SW_RST_NUM,
+ };
+ 
++static const struct mtk_wdt_data mt7988_data = {
++	.toprgu_sw_rst_num = MT7988_TOPRGU_SW_RST_NUM,
++	.has_swsysrst_en = true,
++};
++
+ static const struct mtk_wdt_data mt8183_data = {
+ 	.toprgu_sw_rst_num = MT8183_TOPRGU_SW_RST_NUM,
+ };
+@@ -98,6 +109,28 @@ static const struct mtk_wdt_data mt8195_
+ 	.toprgu_sw_rst_num = MT8195_TOPRGU_SW_RST_NUM,
+ };
+ 
++/**
++ * toprgu_reset_sw_en_unlocked() - enable/disable software control for reset bit
++ * @data: Pointer to instance of driver data.
++ * @id: Bit number identifying the reset to be enabled or disabled.
++ * @enable: If true, enable software control for that bit, disable otherwise.
++ *
++ * Context: The caller must hold lock of struct mtk_wdt_dev.
++ */
++static void toprgu_reset_sw_en_unlocked(struct mtk_wdt_dev *data,
++					unsigned long id, bool enable)
++{
++	u32 tmp;
++
++	tmp = readl(data->wdt_base + WDT_SWSYSRST_EN);
++	if (enable)
++		tmp |= BIT(id);
++	else
++		tmp &= ~BIT(id);
++
++	writel(tmp, data->wdt_base + WDT_SWSYSRST_EN);
++}
++
+ static int toprgu_reset_update(struct reset_controller_dev *rcdev,
+ 			       unsigned long id, bool assert)
+ {
+@@ -108,6 +141,9 @@ static int toprgu_reset_update(struct re
+ 
+ 	spin_lock_irqsave(&data->lock, flags);
+ 
++	if (assert && data->has_swsysrst_en)
++		toprgu_reset_sw_en_unlocked(data, id, true);
++
+ 	tmp = readl(data->wdt_base + WDT_SWSYSRST);
+ 	if (assert)
+ 		tmp |= BIT(id);
+@@ -116,6 +152,9 @@ static int toprgu_reset_update(struct re
+ 	tmp |= WDT_SWSYS_RST_KEY;
+ 	writel(tmp, data->wdt_base + WDT_SWSYSRST);
+ 
++	if (!assert && data->has_swsysrst_en)
++		toprgu_reset_sw_en_unlocked(data, id, false);
++
+ 	spin_unlock_irqrestore(&data->lock, flags);
+ 
+ 	return 0;
+@@ -393,6 +432,8 @@ static int mtk_wdt_probe(struct platform
+ 						       wdt_data->toprgu_sw_rst_num);
+ 		if (err)
+ 			return err;
++
++		mtk_wdt->has_swsysrst_en = wdt_data->has_swsysrst_en;
+ 	}
+ 
+ 	mtk_wdt->disable_wdt_extrst =
+@@ -427,6 +468,7 @@ static const struct of_device_id mtk_wdt
+ 	{ .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data },
+ 	{ .compatible = "mediatek,mt6589-wdt" },
+ 	{ .compatible = "mediatek,mt7986-wdt", .data = &mt7986_data },
++	{ .compatible = "mediatek,mt7988-wdt", .data = &mt7988_data },
+ 	{ .compatible = "mediatek,mt8183-wdt", .data = &mt8183_data },
+ 	{ .compatible = "mediatek,mt8186-wdt", .data = &mt8186_data },
+ 	{ .compatible = "mediatek,mt8192-wdt", .data = &mt8192_data },