add MT6320 driver

Documentation/devicetree/bindings/input/mediatek,pmic-keys.yaml

@@ -24,6 +24,7 @@ description: |
 properties:
   compatible:
     enum:
+      - mediatek,mt6320-keys
       - mediatek,mt6323-keys
       - mediatek,mt6328-keys
       - mediatek,mt6331-keys

Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml

@@ -34,6 +34,7 @@ properties:
   compatible:
     oneOf:
       - enum:
+          - mediatek,mt6320
           - mediatek,mt6323
           - mediatek,mt6331 # "mediatek,mt6331" for PMIC MT6331 and MT6332.
           - mediatek,mt6328
@@ -64,6 +65,7 @@ properties:
       compatible:
         oneOf:
           - enum:
+              - mediatek,mt6320-rtc
               - mediatek,mt6323-rtc
               - mediatek,mt6331-rtc
               - mediatek,mt6358-rtc
@@ -88,6 +90,7 @@ properties:
       compatible:
         oneOf:
           - enum:
+              - mediatek,mt6320-regulator
               - mediatek,mt6323-regulator
               - mediatek,mt6328-regulator
               - mediatek,mt6358-regulator

Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml

@@ -17,6 +17,7 @@ properties:
     enum:
       - mediatek,mt2701-pinctrl
       - mediatek,mt2712-pinctrl
+      - mediatek,mt6320-pinctrl
       - mediatek,mt6397-pinctrl
       - mediatek,mt6589-pinctrl
       - mediatek,mt7623-pinctrl

Documentation/devicetree/bindings/regulator/mediatek,mt6320-regulator.yaml

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/mediatek,mt6320-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT6320 Regulator
+
+maintainers:
+  - Akari Tsuyukusa <akkun11.open@gmail.com>
+
+description:
+  Regulator function of MT6320 PMIC.
+
+properties:
+  compatible:
+    items:
+      - const: mediatek,mt6320-regulator
+
+patternProperties:
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    mt6320_regulators: regulators {
+        compatible = "mediatek,mt6320-regulator";
+    };

Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml

@@ -19,7 +19,7 @@ description:
 
   IP Pairing
 
-  On MT8135 the pins of some SoC internal peripherals can be on the PMIC.
+  On MT6589 and MT8135 the pins of some SoC internal peripherals can be on the PMIC.
   The signals of these pins are routed over the SPI bus using the pwrap
   bridge. In the binding description below the properties needed for bridging
   are marked with "IP Pairing". These are optional on SoCs which do not support
@@ -31,6 +31,7 @@ properties:
       - items:
           - enum:
               - mediatek,mt2701-pwrap
+              - mediatek,mt6589-pwrap
               - mediatek,mt6765-pwrap
               - mediatek,mt6779-pwrap
               - mediatek,mt6795-pwrap

arch/arm/boot/dts/mediatek/mt6320.dtsi

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2026 Akari Tsuyukusa <akkun11.open@gmail.com>
+ */
+
+#include <dt-bindings/input/input.h>
+
+&pwrap {
+	pmic: mt6320 {
+		compatible = "mediatek,mt6320";
+
+		interrupt-parent = <&pio>;
+		interrupts = <43 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+
+		pio6320: pinctrl {
+			compatible = "mediatek,mt6320-pinctrl";
+			gpio-controller;
+			#gpio-cells = <2>;
+		};
+
+		power-controller {
+			compatible = "mediatek,mt6323-pwrc";
+		};
+
+		rtc {
+			compatible = "mediatek,mt6320-rtc";
+		};
+
+		mt6320keys: keys {
+			compatible = "mediatek,mt6320-keys";
+
+			power {
+				linux,keycodes = <KEY_POWER>;
+				wakeup-source;
+			};
+
+			home {
+				linux,keycodes = <KEY_HOME>;
+			};
+		};
+	};
+};

arch/arm/boot/dts/mediatek/mt6589-lenovo-blade.dtsi

@@ -5,6 +5,7 @@
 
 /dts-v1/;
 #include "mt6589.dtsi"
+#include "mt6320.dtsi"
 
 / {
 	#address-cells = <1>;

arch/arm/boot/dts/mediatek/mt6589.dtsi

@@ -8,6 +8,7 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/mt6589-clk.h>
+#include <dt-bindings/reset/mt6589-resets.h>
 
 / {
 	#address-cells = <1>;
@@ -178,6 +179,20 @@
 			clock-names = "system-clk", "rtc-clk";
 		};
 
+		pwrap: pwrap@1000f000 {
+			compatible = "mediatek,mt6589-pwrap";
+			reg = <0x1000f000 0x1000>,
+			      <0x11017000 0x1000>;
+			reg-names = "pwrap", "pwrap-bridge";
+			interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&infracfg CLK_INFRA_PMICSPI>,
+				 <&infracfg CLK_INFRA_PMICWRAP>;
+			clock-names = "spi", "wrap";
+			resets = <&infracfg MT6589_INFRA_PMIC_WRAP_RST>,
+				 <&pericfg MT6589_PERI_PWRAP_BRIDGE_SW_RST>;
+			reset-names = "pwrap", "pwrap-bridge";
+		};
+
 		sysirq: interrupt-controller@10200100 {
 			compatible = "mediatek,mt6589-sysirq",
 				     "mediatek,mt6577-sysirq";

arch/arm/configs/lenovo-blade_defconfig

@@ -80,6 +80,7 @@ CONFIG_PINCTRL=y
 CONFIG_PINCTRL_MTK=y
 CONFIG_EINT_MTK=y
 CONFIG_PINCTRL_MT6589=y
+CONFIG_PINCTRL_MT6320=y
 
 ## GPIO
 
@@ -105,14 +106,21 @@ CONFIG_MMC_MTK=y
 #CONFIG_TOUCHSCREEN_S7300=y # not ported
 
 ## PMIC
-#CONFIG_MTK_PMIC_WRAP=y
+CONFIG_MTK_PMIC_WRAP=y
+CONFIG_MFD_MT6397=y
+CONFIG_REGULATOR_MT6320=y
 
-## Power ?
-#CONFIG_POWER_RESET=y
+## Power
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_MT6323=y
 
 ## Reset
 #CONFIG_RESET_CONTROLLER
 
+## Input
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_KEYBOARD_MTK_PMIC=y
+
 ## Battery
 
 ## Audio
@@ -138,8 +146,8 @@ CONFIG_MMC_MTK=y
 #CONFIG_PWM_MTK_DISP=y
 
 ## RTC
-#CONFIG_RTC_CLASS=y
-#CONFIG_RTC_DRV_MT7622=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_MT6397=y
 
 ## Android
 #CONFIG_ANDROID_BINDER_IPC=y

drivers/input/keyboard/mtk-pmic-keys.c

@@ -8,6 +8,7 @@
 #include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
+#include <linux/mfd/mt6320/registers.h>
 #include <linux/mfd/mt6323/registers.h>
 #include <linux/mfd/mt6331/registers.h>
 #include <linux/mfd/mt6357/registers.h>
@@ -56,6 +57,17 @@ struct mtk_pmic_regs {
 	u32 rst_lprst_mask; /* Long-press reset timeout bitmask */
 };
 
+static const struct mtk_pmic_regs mt6320_regs = {
+	.keys_regs[MTK_PMIC_PWRKEY_INDEX] =
+		MTK_PMIC_KEYS_REGS(MT6320_CHRSTATUS,
+		0x8, MT6320_INT_RSV, 0x10, MTK_PMIC_PWRKEY_RST),
+	.keys_regs[MTK_PMIC_HOMEKEY_INDEX] =
+		MTK_PMIC_KEYS_REGS(MT6320_OCSTATUS2,
+		0x10, MT6320_INT_RSV, 0x8, MTK_PMIC_HOMEKEY_RST),
+	.pmic_rst_reg = MT6320_TOP_RST_MISC,
+	.rst_lprst_mask = MTK_PMIC_RST_DU_MASK,
+};
+
 static const struct mtk_pmic_regs mt6397_regs = {
 	.keys_regs[MTK_PMIC_PWRKEY_INDEX] =
 		MTK_PMIC_KEYS_REGS(MT6397_CHRSTATUS,
@@ -282,6 +294,9 @@ static DEFINE_SIMPLE_DEV_PM_OPS(mtk_pmic_keys_pm_ops, mtk_pmic_keys_suspend,
 
 static const struct of_device_id of_mtk_pmic_keys_match_tbl[] = {
 	{
+		.compatible = "mediatek,mt6320-keys",
+		.data = &mt6320_regs,
+	}, {
 		.compatible = "mediatek,mt6397-keys",
 		.data = &mt6397_regs,
 	}, {

drivers/mfd/mt6397-core.c

@@ -12,13 +12,15 @@
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/mfd/core.h>
+#include <linux/mfd/mt6320/core.h>
 #include <linux/mfd/mt6323/core.h>
 #include <linux/mfd/mt6328/core.h>
 #include <linux/mfd/mt6331/core.h>
 #include <linux/mfd/mt6357/core.h>
 #include <linux/mfd/mt6358/core.h>
 #include <linux/mfd/mt6359/core.h>
 #include <linux/mfd/mt6397/core.h>
+#include <linux/mfd/mt6320/registers.h>
 #include <linux/mfd/mt6323/registers.h>
 #include <linux/mfd/mt6328/registers.h>
 #include <linux/mfd/mt6331/registers.h>
@@ -27,6 +29,9 @@
 #include <linux/mfd/mt6359/registers.h>
 #include <linux/mfd/mt6397/registers.h>
 
+#define MT6320_RTC_BASE		0xe000
+#define MT6320_RTC_SIZE		0x3f
+
 #define MT6323_RTC_BASE		0x8000
 #define MT6323_RTC_SIZE		0x40
 
@@ -45,6 +50,11 @@
 #define MT6323_PWRC_BASE	0x8000
 #define MT6323_PWRC_SIZE	0x40
 
+static const struct resource mt6320_rtc_resources[] = {
+	DEFINE_RES_MEM(MT6320_RTC_BASE, MT6320_RTC_SIZE),
+	DEFINE_RES_IRQ(MT6320_IRQ_RTC),
+};
+
 static const struct resource mt6323_rtc_resources[] = {
 	DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
 	DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
@@ -70,6 +80,11 @@ static const struct resource mt6397_rtc_resources[] = {
 	DEFINE_RES_IRQ(MT6397_IRQ_RTC),
 };
 
+static const struct resource mt6320_keys_resources[] = {
+	DEFINE_RES_IRQ_NAMED(MT6320_IRQ_PWRKEY, "powerkey"),
+	DEFINE_RES_IRQ_NAMED(MT6320_IRQ_HOMEKEY, "homekey"),
+};
+
 static const struct resource mt6358_keys_resources[] = {
 	DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY, "powerkey"),
 	DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY, "homekey"),
@@ -123,6 +138,23 @@ static const struct resource mt6323_pwrc_resources[] = {
 	DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
 };
 
+static const struct mfd_cell mt6320_devs[] = {
+	{
+		.name = "mt6320-rtc",
+		.num_resources = ARRAY_SIZE(mt6320_rtc_resources),
+		.resources = mt6320_rtc_resources,
+		.of_compatible = "mediatek,mt6320-rtc",
+	}, {
+		.name = "mt6320-regulator",
+		.of_compatible = "mediatek,mt6320-regulator"
+	}, {
+		.name = "mtk-pmic-keys",
+		.num_resources = ARRAY_SIZE(mt6320_keys_resources),
+		.resources = mt6320_keys_resources,
+		.of_compatible = "mediatek,mt6320-keys",
+	},
+};
+
 static const struct mfd_cell mt6323_devs[] = {
 	{
 		.name = "mt6323-rtc",
@@ -287,6 +319,14 @@ struct chip_data {
 	int (*irq_init)(struct mt6397_chip *chip);
 };
 
+static const struct chip_data mt6320_core = {
+	.cid_addr = MT6320_CID,
+	.cid_shift = 0,
+	.cells = mt6320_devs,
+	.cell_size = ARRAY_SIZE(mt6320_devs),
+	.irq_init = mt6397_irq_init,
+};
+
 static const struct chip_data mt6323_core = {
 	.cid_addr = MT6323_CID,
 	.cid_shift = 0,
@@ -297,7 +337,7 @@ static const struct chip_data mt6323_core = {
 
 static const struct chip_data mt6328_core = {
 	.cid_addr = MT6328_HWCID,
-	.cid_shift = 0,
+	.cid_shift = 8,
 	.cells = mt6328_devs,
 	.cell_size = ARRAY_SIZE(mt6328_devs),
 	.irq_init = mt6397_irq_init,
@@ -313,7 +353,7 @@ static const struct chip_data mt6357_core = {
 
 static const struct chip_data mt6331_mt6332_core = {
 	.cid_addr = MT6331_HWCID,
-	.cid_shift = 0,
+	.cid_shift = 8,
 	.cells = mt6331_mt6332_devs,
 	.cell_size = ARRAY_SIZE(mt6331_mt6332_devs),
 	.irq_init = mt6397_irq_init,
@@ -399,6 +439,9 @@ static int mt6397_probe(struct platform_device *pdev)
 
 static const struct of_device_id mt6397_of_match[] = {
 	{
+		.compatible = "mediatek,mt6320",
+		.data = &mt6320_core,
+	}, {
 		.compatible = "mediatek,mt6323",
 		.data = &mt6323_core,
 	}, {

drivers/mfd/mt6397-irq.c

@@ -9,6 +9,8 @@
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/suspend.h>
+#include <linux/mfd/mt6320/core.h>
+#include <linux/mfd/mt6320/registers.h>
 #include <linux/mfd/mt6323/core.h>
 #include <linux/mfd/mt6323/registers.h>
 #include <linux/mfd/mt6328/core.h>
@@ -176,6 +178,12 @@ int mt6397_irq_init(struct mt6397_chip *chip)
 	mutex_init(&chip->irqlock);
 
 	switch (chip->chip_id) {
+	case MT6320_CHIP_ID:
+		chip->int_con[0] = MT6320_INT_CON0;
+		chip->int_con[1] = MT6320_INT_CON1;
+		chip->int_status[0] = MT6320_INT_STATUS0;
+		chip->int_status[1] = MT6320_INT_STATUS1;
+		break;
 	case MT6323_CHIP_ID:
 		chip->int_con[0] = MT6323_INT_CON0;
 		chip->int_con[1] = MT6323_INT_CON1;