[PATCH v8 00/10] Improve the MT8365 SoC and EVK board support

[PATCH v8 00/10] Improve the MT8365 SoC and EVK board support

[Alexandre Mergnat]

This commits are based on the Fabien Parent <fparent@baylibre.com> work.

The purpose of this series is to add the following HWs / IPs support for
the mt8365-evk board:
- Watchdog
- Power Management Integrated Circuit "PMIC" wrapper
- MT6357 PMIC
- MultiMediaCard "MMC" & Secure Digital "SD" controller
- USB controller
- Ethernet MAC controller

Add CPU Freq & IDLE support for this board.

All previous dependancies are merged and released into the v6.4-rc1.

=== Build:

To test this serie, cherry-pick this serie, and build it using the arm64
defconfig.

Regards,
Alex

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
Changes in v8:
- Change vqmmc-supply of mmc1 node.
- Remove all always-on regulators from the board devicetree.
- Link to v7: https://lore.kernel.org/r/20230203-evk-board-support-v7-0-98cbdfac656e@baylibre.com

Changes in v7:
- Rebase to the kernel v6.4-rc1.
- Remove "dt-bindings: watchdog: mediatek,mtk-wdt: add mt8365" because
  it was applied.
- Link to v6: https://lore.kernel.org/r/20230203-evk-board-support-v6-0-8d6b1cfe7f29@baylibre.com

Changes in v6:
- Add commit message for the arm64 defconfig changes
- Fix the mail list
- Link to v5: https://lore.kernel.org/r/20230203-evk-board-support-v5-0-1883c1b405ad@baylibre.com

Changes in v5:
- Add patches to build the MT6357 regulator driver and MTK PMIC keys by default
- Remove "dt-bindings: pinctrl: mediatek,mt8365-pinctrl: add drive strength property"
  patch from this serie and add it to the pinctrl serie [3]
- Link to v4: https://lore.kernel.org/r/20230203-evk-board-support-v4-0-5cffe66a38c0@baylibre.com

Changes in v4:
- Remove v3 applied patch from the serie:
  - arm64: dts: mediatek: add ethernet support for mt8365 SoC
  - arm64: dts: mediatek: add mmc support for mt8365 SoC
  - arm64: dts: mediatek: add mt6357 device-tree
  - arm64: dts: mediatek: add pwrap support to mt8365 SoC
  - arm64: dts: mediatek: Increase the size BL31 reserved memory
- Drop "arm64: dts: mediatek: fix systimer properties" which is done [1]
- Fix style, typo and re-order properties.
- Use interrupts-extended for the PMIC node.
- Link to v3: https://lore.kernel.org/r/20230203-evk-board-support-v3-0-0003e80e0095@baylibre.com

Changes in v3:
- Remove v2 applied patch from the serie:
  - dt-bindings: mmc: mediatek,mtk-sd: add mt8365
- Add trailers and simply resend.
- Link to v2: https://lore.kernel.org/r/20230203-evk-board-support-v2-0-6ec7cdb10ccf@baylibre.com

---
Alexandre Mergnat (9):
      arm64: defconfig: enable MT6357 regulator
      arm64: defconfig: enable Mediatek PMIC key
      arm64: dts: mediatek: add watchdog support for mt8365 SoC
      arm64: dts: mediatek: add mt6357 PMIC support for mt8365-evk
      arm64: dts: mediatek: add mmc support for mt8365-evk
      arm64: dts: mediatek: add usb controller support for mt8365-evk
      arm64: dts: mediatek: add ethernet support for mt8365-evk
      arm64: dts: mediatek: add OPP support for mt8365 SoC
      arm64: dts: mediatek: add cpufreq support for mt8365-evk

Amjad Ouled-Ameur (1):
      arm64: dts: mediatek: Add CPU Idle support

 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 235 ++++++++++++++++++++++++++++
 arch/arm64/boot/dts/mediatek/mt8365.dtsi    | 142 +++++++++++++++++
 arch/arm64/configs/defconfig                |   2 +
 3 files changed, 379 insertions(+)
---
base-commit: d2b7e0f7ff8e0b21e4c8d0ae6dfa38786fe44b35
change-id: 20230203-evk-board-support-d5b7a839ed7b

Best regards,
-- 
Alexandre Mergnat <amergnat@baylibre.com>

[PATCH v8 01/10] arm64: defconfig: enable MT6357 regulator

[Alexandre Mergnat]

Enable the power regulator support of MediaTek MT6357 PMIC. This driver
supports the control of different power rails of device through
regulator interface.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index a24609e14d50..ed3fca298314 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -708,6 +708,7 @@ CONFIG_REGULATOR_MAX77620=y
 CONFIG_REGULATOR_MAX8973=y
 CONFIG_REGULATOR_MP8859=y
 CONFIG_REGULATOR_MT6315=m
+CONFIG_REGULATOR_MT6357=y
 CONFIG_REGULATOR_MT6358=y
 CONFIG_REGULATOR_MT6359=y
 CONFIG_REGULATOR_MT6360=y

-- 
2.25.1

[PATCH v8 02/10] arm64: defconfig: enable Mediatek PMIC key

[Alexandre Mergnat]

Some Mediatek PMIC devices can manage Power and Home keys (buttons).
This patch enable the driver which handle the 2 keys managed by the
Mediatek PMIC.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index ed3fca298314..0db8293f477d 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -413,6 +413,7 @@ CONFIG_KEYBOARD_GPIO=y
 CONFIG_KEYBOARD_SNVS_PWRKEY=m
 CONFIG_KEYBOARD_IMX_SC_KEY=m
 CONFIG_KEYBOARD_CROS_EC=y
+CONFIG_KEYBOARD_MTK_PMIC=m
 CONFIG_MOUSE_ELAN_I2C=m
 CONFIG_INPUT_TOUCHSCREEN=y
 CONFIG_TOUCHSCREEN_ATMEL_MXT=m

-- 
2.25.1

[PATCH v8 03/10] arm64: dts: mediatek: add watchdog support for mt8365 SoC

[Alexandre Mergnat]

Add watchdog support.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index 1f6b48359115..bb45aab2e6a9 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -162,6 +162,12 @@ syscfg_pctl: syscfg-pctl@10005000 {
 			reg = <0 0x10005000 0 0x1000>;
 		};
 
+		watchdog: watchdog@10007000 {
+			compatible = "mediatek,mt8365-wdt", "mediatek,mt6589-wdt";
+			reg = <0 0x10007000 0 0x100>;
+			#reset-cells = <1>;
+		};
+
 		pio: pinctrl@1000b000 {
 			compatible = "mediatek,mt8365-pinctrl";
 			reg = <0 0x1000b000 0 0x1000>;

-- 
2.25.1

[PATCH v8 04/10] arm64: dts: mediatek: add mt6357 PMIC support for mt8365-evk

[Alexandre Mergnat]

This power management system chip integration helps to manage regulators
and keys.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index ceb48eb1a6e6..6074aa9c1c3e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -12,6 +12,7 @@
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/mt8365-pinfunc.h>
 #include "mt8365.dtsi"
+#include "mt6357.dtsi"
 
 / {
 	model = "MediaTek MT8365 Open Platform EVK";
@@ -94,6 +95,12 @@ &i2c0 {
 	status = "okay";
 };
 
+&mt6357_pmic {
+	interrupts-extended = <&pio 145 IRQ_TYPE_LEVEL_HIGH>;
+	interrupt-controller;
+	#interrupt-cells = <2>;
+};
+
 &pio {
 	gpio_keys: gpio-keys-pins {
 		pins {

-- 
2.25.1

[PATCH v8 05/10] arm64: dts: mediatek: add mmc support for mt8365-evk

[Alexandre Mergnat]

- Add EMMC support on mmc0 (internal memory)
- Add SD-UHS support on mmc1 (external memory)

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 138 ++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 6074aa9c1c3e..6e2f3601509e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -95,6 +95,42 @@ &i2c0 {
 	status = "okay";
 };
 
+&mmc0 {
+	assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL>;
+	assigned-clocks = <&topckgen CLK_TOP_MSDC50_0_SEL>;
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	cap-mmc-hw-reset;
+	hs400-ds-delay = <0x12012>;
+	max-frequency = <200000000>;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	pinctrl-0 = <&mmc0_default_pins>;
+	pinctrl-1 = <&mmc0_uhs_pins>;
+	pinctrl-names = "default", "state_uhs";
+	vmmc-supply = <&mt6357_vemc_reg>;
+	vqmmc-supply = <&mt6357_vio18_reg>;
+	status = "okay";
+};
+
+&mmc1 {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	cd-gpios = <&pio 76 GPIO_ACTIVE_LOW>;
+	max-frequency = <200000000>;
+	pinctrl-0 = <&mmc1_default_pins>;
+	pinctrl-1 = <&mmc1_uhs_pins>;
+	pinctrl-names = "default", "state_uhs";
+	sd-uhs-sdr104;
+	sd-uhs-sdr50;
+	vmmc-supply = <&mt6357_vmch_reg>;
+	vqmmc-supply = <&mt6357_vmc_reg>;
+	status = "okay";
+};
+
 &mt6357_pmic {
 	interrupts-extended = <&pio 145 IRQ_TYPE_LEVEL_HIGH>;
 	interrupt-controller;
@@ -118,6 +154,108 @@ pins {
 		};
 	};
 
+	mmc0_default_pins: mmc0-default-pins {
+		clk-pins {
+			pinmux = <MT8365_PIN_99_MSDC0_CLK__FUNC_MSDC0_CLK>;
+			bias-pull-down;
+		};
+
+		cmd-dat-pins {
+			pinmux = <MT8365_PIN_103_MSDC0_DAT0__FUNC_MSDC0_DAT0>,
+				 <MT8365_PIN_102_MSDC0_DAT1__FUNC_MSDC0_DAT1>,
+				 <MT8365_PIN_101_MSDC0_DAT2__FUNC_MSDC0_DAT2>,
+				 <MT8365_PIN_100_MSDC0_DAT3__FUNC_MSDC0_DAT3>,
+				 <MT8365_PIN_96_MSDC0_DAT4__FUNC_MSDC0_DAT4>,
+				 <MT8365_PIN_95_MSDC0_DAT5__FUNC_MSDC0_DAT5>,
+				 <MT8365_PIN_94_MSDC0_DAT6__FUNC_MSDC0_DAT6>,
+				 <MT8365_PIN_93_MSDC0_DAT7__FUNC_MSDC0_DAT7>,
+				 <MT8365_PIN_98_MSDC0_CMD__FUNC_MSDC0_CMD>;
+			input-enable;
+			bias-pull-up;
+		};
+
+		rst-pins {
+			pinmux = <MT8365_PIN_97_MSDC0_RSTB__FUNC_MSDC0_RSTB>;
+			bias-pull-up;
+		};
+	};
+
+	mmc0_uhs_pins: mmc0-uhs-pins {
+		clk-pins {
+			pinmux = <MT8365_PIN_99_MSDC0_CLK__FUNC_MSDC0_CLK>;
+			drive-strength = <MTK_DRIVE_10mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+
+		cmd-dat-pins {
+			pinmux = <MT8365_PIN_103_MSDC0_DAT0__FUNC_MSDC0_DAT0>,
+				 <MT8365_PIN_102_MSDC0_DAT1__FUNC_MSDC0_DAT1>,
+				 <MT8365_PIN_101_MSDC0_DAT2__FUNC_MSDC0_DAT2>,
+				 <MT8365_PIN_100_MSDC0_DAT3__FUNC_MSDC0_DAT3>,
+				 <MT8365_PIN_96_MSDC0_DAT4__FUNC_MSDC0_DAT4>,
+				 <MT8365_PIN_95_MSDC0_DAT5__FUNC_MSDC0_DAT5>,
+				 <MT8365_PIN_94_MSDC0_DAT6__FUNC_MSDC0_DAT6>,
+				 <MT8365_PIN_93_MSDC0_DAT7__FUNC_MSDC0_DAT7>,
+				 <MT8365_PIN_98_MSDC0_CMD__FUNC_MSDC0_CMD>;
+			input-enable;
+			drive-strength = <MTK_DRIVE_10mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+
+		ds-pins {
+			pinmux = <MT8365_PIN_104_MSDC0_DSL__FUNC_MSDC0_DSL>;
+			drive-strength = <MTK_DRIVE_10mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+
+		rst-pins {
+			pinmux = <MT8365_PIN_97_MSDC0_RSTB__FUNC_MSDC0_RSTB>;
+			drive-strength = <MTK_DRIVE_10mA>;
+			bias-pull-up;
+		};
+	};
+
+	mmc1_default_pins: mmc1-default-pins {
+		cd-pins {
+			pinmux = <MT8365_PIN_76_CMDAT8__FUNC_GPIO76>;
+			bias-pull-up;
+		};
+
+		clk-pins {
+			pinmux = <MT8365_PIN_88_MSDC1_CLK__FUNC_MSDC1_CLK>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+
+		cmd-dat-pins {
+			pinmux = <MT8365_PIN_89_MSDC1_DAT0__FUNC_MSDC1_DAT0>,
+				 <MT8365_PIN_90_MSDC1_DAT1__FUNC_MSDC1_DAT1>,
+				 <MT8365_PIN_91_MSDC1_DAT2__FUNC_MSDC1_DAT2>,
+				 <MT8365_PIN_92_MSDC1_DAT3__FUNC_MSDC1_DAT3>,
+				 <MT8365_PIN_87_MSDC1_CMD__FUNC_MSDC1_CMD>;
+			input-enable;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
+	mmc1_uhs_pins: mmc1-uhs-pins {
+		clk-pins {
+			pinmux = <MT8365_PIN_88_MSDC1_CLK__FUNC_MSDC1_CLK>;
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+
+		cmd-dat-pins {
+			pinmux = <MT8365_PIN_89_MSDC1_DAT0__FUNC_MSDC1_DAT0>,
+				 <MT8365_PIN_90_MSDC1_DAT1__FUNC_MSDC1_DAT1>,
+				 <MT8365_PIN_91_MSDC1_DAT2__FUNC_MSDC1_DAT2>,
+				 <MT8365_PIN_92_MSDC1_DAT3__FUNC_MSDC1_DAT3>,
+				 <MT8365_PIN_87_MSDC1_CMD__FUNC_MSDC1_CMD>;
+			input-enable;
+			drive-strength = <MTK_DRIVE_6mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		pins {
 			pinmux = <MT8365_PIN_35_URXD0__FUNC_URXD0>,

-- 
2.25.1

[PATCH v8 06/10] arm64: dts: mediatek: add usb controller support for mt8365-evk

[Alexandre Mergnat]

This patch add support for SuperSpeed USB, in OTG mode, on micro connector.
It also add support for the Extensible Host Controller Interface USB.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 6e2f3601509e..1a5769c397c2 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -309,6 +309,28 @@ &pwm {
 	status = "okay";
 };
 
+&ssusb {
+	dr_mode = "otg";
+	maximum-speed = "high-speed";
+	pinctrl-0 = <&usb_pins>;
+	pinctrl-names = "default";
+	usb-role-switch;
+	vusb33-supply = <&mt6357_vusb33_reg>;
+	status = "okay";
+
+	connector {
+		compatible = "gpio-usb-b-connector", "usb-b-connector";
+		id-gpios = <&pio 17 GPIO_ACTIVE_HIGH>;
+		type = "micro";
+		vbus-supply = <&usb_otg_vbus>;
+	};
+};
+
+&usb_host {
+	vusb33-supply = <&mt6357_vusb33_reg>;
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-0 = <&uart0_pins>;
 	pinctrl-names = "default";

-- 
2.25.1

[PATCH v8 07/10] arm64: dts: mediatek: add ethernet support for mt8365-evk

[Alexandre Mergnat]

- Enable "vibr" and "vsim2" regulators to power the ethernet chip.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 48 +++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 1a5769c397c2..86524cbf4354 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -88,6 +88,29 @@ optee_reserved: optee@43200000 {
 	};
 };
 
+&ethernet {
+	pinctrl-0 = <&ethernet_pins>;
+	pinctrl-names = "default";
+	phy-handle = <&eth_phy>;
+	phy-mode = "rmii";
+	/*
+	 * Ethernet and HDMI (DSI0) are sharing pins.
+	 * Only one can be enabled at a time and require the physical switch
+	 * SW2101 to be set on LAN position
+	 * mt6357_vibr_reg and mt6357_vsim2_reg are needed to supply ethernet
+	 */
+	status = "disabled";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		eth_phy: ethernet-phy@0 {
+			reg = <0>;
+		};
+	};
+};
+
 &i2c0 {
 	clock-frequency = <100000>;
 	pinctrl-0 = <&i2c0_pins>;
@@ -138,6 +161,31 @@ &mt6357_pmic {
 };
 
 &pio {
+	ethernet_pins: ethernet-pins {
+		phy_reset_pins {
+			pinmux = <MT8365_PIN_133_TDM_TX_DATA1__FUNC_GPIO133>;
+		};
+
+		rmii_pins {
+			pinmux = <MT8365_PIN_0_GPIO0__FUNC_EXT_TXD0>,
+				 <MT8365_PIN_1_GPIO1__FUNC_EXT_TXD1>,
+				 <MT8365_PIN_2_GPIO2__FUNC_EXT_TXD2>,
+				 <MT8365_PIN_3_GPIO3__FUNC_EXT_TXD3>,
+				 <MT8365_PIN_4_GPIO4__FUNC_EXT_TXC>,
+				 <MT8365_PIN_5_GPIO5__FUNC_EXT_RXER>,
+				 <MT8365_PIN_6_GPIO6__FUNC_EXT_RXC>,
+				 <MT8365_PIN_7_GPIO7__FUNC_EXT_RXDV>,
+				 <MT8365_PIN_8_GPIO8__FUNC_EXT_RXD0>,
+				 <MT8365_PIN_9_GPIO9__FUNC_EXT_RXD1>,
+				 <MT8365_PIN_10_GPIO10__FUNC_EXT_RXD2>,
+				 <MT8365_PIN_11_GPIO11__FUNC_EXT_RXD3>,
+				 <MT8365_PIN_12_GPIO12__FUNC_EXT_TXEN>,
+				 <MT8365_PIN_13_GPIO13__FUNC_EXT_COL>,
+				 <MT8365_PIN_14_GPIO14__FUNC_EXT_MDIO>,
+				 <MT8365_PIN_15_GPIO15__FUNC_EXT_MDC>;
+		};
+	};
+
 	gpio_keys: gpio-keys-pins {
 		pins {
 			pinmux = <MT8365_PIN_24_KPCOL0__FUNC_KPCOL0>;

-- 
2.25.1

[PATCH v8 08/10] arm64: dts: mediatek: add OPP support for mt8365 SoC

[Alexandre Mergnat]

In order to have cpufreq support, this patch adds generic Operating
Performance Points support.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 101 +++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index bb45aab2e6a9..cfe0c67ad61f 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -20,6 +20,91 @@ cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+	cluster0_opp: opp-table-0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-850000000 {
+			opp-hz = /bits/ 64 <850000000>;
+			opp-microvolt = <650000>;
+		};
+
+		opp-918000000 {
+			opp-hz = /bits/ 64 <918000000>;
+			opp-microvolt = <668750>;
+		};
+
+		opp-987000000 {
+			opp-hz = /bits/ 64 <987000000>;
+			opp-microvolt = <687500>;
+		};
+
+		opp-1056000000 {
+			opp-hz = /bits/ 64 <1056000000>;
+			opp-microvolt = <706250>;
+		};
+
+		opp-1125000000 {
+			opp-hz = /bits/ 64 <1125000000>;
+			opp-microvolt = <725000>;
+		};
+
+		opp-1216000000 {
+			opp-hz = /bits/ 64 <1216000000>;
+			opp-microvolt = <750000>;
+		};
+
+		opp-1308000000 {
+			opp-hz = /bits/ 64 <1308000000>;
+			opp-microvolt = <775000>;
+		};
+
+		opp-1400000000 {
+			opp-hz = /bits/ 64 <1400000000>;
+			opp-microvolt = <800000>;
+		};
+
+		opp-1466000000 {
+			opp-hz = /bits/ 64 <1466000000>;
+			opp-microvolt = <825000>;
+		};
+
+		opp-1533000000 {
+			opp-hz = /bits/ 64 <1533000000>;
+			opp-microvolt = <850000>;
+		};
+
+		opp-1633000000 {
+			opp-hz = /bits/ 64 <1633000000>;
+			opp-microvolt = <887500>;
+		};
+
+		opp-1700000000 {
+			opp-hz = /bits/ 64 <1700000000>;
+			opp-microvolt = <912500>;
+		};
+
+		opp-1767000000 {
+			opp-hz = /bits/ 64 <1767000000>;
+			opp-microvolt = <937500>;
+		};
+
+		opp-1834000000 {
+			opp-hz = /bits/ 64 <1834000000>;
+			opp-microvolt = <962500>;
+		};
+
+		opp-1917000000 {
+			opp-hz = /bits/ 64 <1917000000>;
+			opp-microvolt = <993750>;
+		};
+
+		opp-2001000000 {
+			opp-hz = /bits/ 64 <2001000000>;
+			opp-microvolt = <1025000>;
+		};
+	};
+
 		cpu-map {
 			cluster0 {
 				core0 {
@@ -50,6 +135,10 @@ cpu0: cpu@0 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <256>;
 			next-level-cache = <&l2>;
+			clocks = <&mcucfg CLK_MCU_BUS_SEL>,
+				 <&apmixedsys CLK_APMIXED_MAINPLL>;
+			clock-names = "cpu", "intermediate";
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		cpu1: cpu@1 {
@@ -65,6 +154,10 @@ cpu1: cpu@1 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <256>;
 			next-level-cache = <&l2>;
+			clocks = <&mcucfg CLK_MCU_BUS_SEL>,
+				 <&apmixedsys CLK_APMIXED_MAINPLL>;
+			clock-names = "cpu", "intermediate", "armpll";
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		cpu2: cpu@2 {
@@ -80,6 +173,10 @@ cpu2: cpu@2 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <256>;
 			next-level-cache = <&l2>;
+			clocks = <&mcucfg CLK_MCU_BUS_SEL>,
+				 <&apmixedsys CLK_APMIXED_MAINPLL>;
+			clock-names = "cpu", "intermediate", "armpll";
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		cpu3: cpu@3 {
@@ -95,6 +192,10 @@ cpu3: cpu@3 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <256>;
 			next-level-cache = <&l2>;
+			clocks = <&mcucfg CLK_MCU_BUS_SEL>,
+				 <&apmixedsys CLK_APMIXED_MAINPLL>;
+			clock-names = "cpu", "intermediate", "armpll";
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		l2: l2-cache {

-- 
2.25.1

[PATCH v8 09/10] arm64: dts: mediatek: add cpufreq support for mt8365-evk

[Alexandre Mergnat]

In order to have cpufreq support, this patch adds proc-supply and
sram-supply for each CPU.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 86524cbf4354..50cbaefa1a99 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -88,6 +88,26 @@ optee_reserved: optee@43200000 {
 	};
 };
 
+&cpu0 {
+	proc-supply = <&mt6357_vproc_reg>;
+	sram-supply = <&mt6357_vsram_proc_reg>;
+};
+
+&cpu1 {
+	proc-supply = <&mt6357_vproc_reg>;
+	sram-supply = <&mt6357_vsram_proc_reg>;
+};
+
+&cpu2 {
+	proc-supply = <&mt6357_vproc_reg>;
+	sram-supply = <&mt6357_vsram_proc_reg>;
+};
+
+&cpu3 {
+	proc-supply = <&mt6357_vproc_reg>;
+	sram-supply = <&mt6357_vsram_proc_reg>;
+};
+
 &ethernet {
 	pinctrl-0 = <&ethernet_pins>;
 	pinctrl-names = "default";

-- 
2.25.1

[PATCH v8 10/10] arm64: dts: mediatek: Add CPU Idle support

[amergnat]

From: Amjad Ouled-Ameur <aouledameur@baylibre.com>

MT8365 has 3 CPU Idle states:
- MCDI_CPU. (Multi-Core-Deep-Idle)
- MCDI_CLUSTER.
- DPIDLE. (Deep-Idle)

Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 35 ++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index cfe0c67ad61f..413496c92069 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -128,6 +128,7 @@ cpu0: cpu@0 {
 			reg = <0x0>;
 			#cooling-cells = <2>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
 			i-cache-size = <0x8000>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <256>;
@@ -147,6 +148,7 @@ cpu1: cpu@1 {
 			reg = <0x1>;
 			#cooling-cells = <2>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
 			i-cache-size = <0x8000>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <256>;
@@ -166,6 +168,7 @@ cpu2: cpu@2 {
 			reg = <0x2>;
 			#cooling-cells = <2>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
 			i-cache-size = <0x8000>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <256>;
@@ -185,6 +188,7 @@ cpu3: cpu@3 {
 			reg = <0x3>;
 			#cooling-cells = <2>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
 			i-cache-size = <0x8000>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <256>;
@@ -198,6 +202,37 @@ cpu3: cpu@3 {
 			operating-points-v2 = <&cluster0_opp>;
 		};
 
+		idle-states {
+			entry-method = "psci";
+
+			CPU_MCDI: cpu-mcdi {
+				compatible = "arm,idle-state";
+				local-timer-stop;
+				arm,psci-suspend-param = <0x00010001>;
+				entry-latency-us = <300>;
+				exit-latency-us = <200>;
+				min-residency-us = <1000>;
+			};
+
+			CLUSTER_MCDI: cluster-mcdi {
+				compatible = "arm,idle-state";
+				local-timer-stop;
+				arm,psci-suspend-param = <0x01010001>;
+				entry-latency-us = <350>;
+				exit-latency-us = <250>;
+				min-residency-us = <1200>;
+			};
+
+			CLUSTER_DPIDLE: cluster-dpidle {
+				compatible = "arm,idle-state";
+				local-timer-stop;
+				arm,psci-suspend-param = <0x01010004>;
+				entry-latency-us = <300>;
+				exit-latency-us = <800>;
+				min-residency-us = <3300>;
+			};
+		};
+
 		l2: l2-cache {
 			compatible = "cache";
 			cache-level = <2>;

-- 
2.25.1

Re: [PATCH v8 07/10] arm64: dts: mediatek: add ethernet support for mt8365-evk

[AngeloGioacchino Del Regno]

Il 25/05/23 10:33, Alexandre Mergnat ha scritto:
> - Enable "vibr" and "vsim2" regulators to power the ethernet chip.
> 
> Tested-by: Kevin Hilman <khilman@baylibre.com>
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> ---
>   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 48 +++++++++++++++++++++++++++++
>   1 file changed, 48 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> index 1a5769c397c2..86524cbf4354 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> @@ -88,6 +88,29 @@ optee_reserved: optee@43200000 {
>   	};
>   };
>   
> +&ethernet {
> +	pinctrl-0 = <&ethernet_pins>;
> +	pinctrl-names = "default";
> +	phy-handle = <&eth_phy>;
> +	phy-mode = "rmii";
> +	/*
> +	 * Ethernet and HDMI (DSI0) are sharing pins.
> +	 * Only one can be enabled at a time and require the physical switch
> +	 * SW2101 to be set on LAN position
> +	 * mt6357_vibr_reg and mt6357_vsim2_reg are needed to supply ethernet
> +	 */
> +	status = "disabled";

Ouh, that's sad :-(

...but you're left with no other choice, so I agree with providing at least
the full node in case anyone wants to actually enable it by flipping the
switch on the board, so you get my

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Cheers!

> +
> +	mdio {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		eth_phy: ethernet-phy@0 {
> +			reg = <0>;
> +		};
> +	};
> +};
> +
>   &i2c0 {
>   	clock-frequency = <100000>;
>   	pinctrl-0 = <&i2c0_pins>;
> @@ -138,6 +161,31 @@ &mt6357_pmic {
>   };
>   
>   &pio {
> +	ethernet_pins: ethernet-pins {
> +		phy_reset_pins {
> +			pinmux = <MT8365_PIN_133_TDM_TX_DATA1__FUNC_GPIO133>;
> +		};
> +
> +		rmii_pins {
> +			pinmux = <MT8365_PIN_0_GPIO0__FUNC_EXT_TXD0>,
> +				 <MT8365_PIN_1_GPIO1__FUNC_EXT_TXD1>,
> +				 <MT8365_PIN_2_GPIO2__FUNC_EXT_TXD2>,
> +				 <MT8365_PIN_3_GPIO3__FUNC_EXT_TXD3>,
> +				 <MT8365_PIN_4_GPIO4__FUNC_EXT_TXC>,
> +				 <MT8365_PIN_5_GPIO5__FUNC_EXT_RXER>,
> +				 <MT8365_PIN_6_GPIO6__FUNC_EXT_RXC>,
> +				 <MT8365_PIN_7_GPIO7__FUNC_EXT_RXDV>,
> +				 <MT8365_PIN_8_GPIO8__FUNC_EXT_RXD0>,
> +				 <MT8365_PIN_9_GPIO9__FUNC_EXT_RXD1>,
> +				 <MT8365_PIN_10_GPIO10__FUNC_EXT_RXD2>,
> +				 <MT8365_PIN_11_GPIO11__FUNC_EXT_RXD3>,
> +				 <MT8365_PIN_12_GPIO12__FUNC_EXT_TXEN>,
> +				 <MT8365_PIN_13_GPIO13__FUNC_EXT_COL>,
> +				 <MT8365_PIN_14_GPIO14__FUNC_EXT_MDIO>,
> +				 <MT8365_PIN_15_GPIO15__FUNC_EXT_MDC>;
> +		};
> +	};
> +
>   	gpio_keys: gpio-keys-pins {
>   		pins {
>   			pinmux = <MT8365_PIN_24_KPCOL0__FUNC_KPCOL0>;
> 

Re: [PATCH v8 00/10] Improve the MT8365 SoC and EVK board support

[Matthias Brugger]

On 25/05/2023 10:33, Alexandre Mergnat wrote:
> This commits are based on the Fabien Parent <fparent@baylibre.com> work.
> 
> The purpose of this series is to add the following HWs / IPs support for
> the mt8365-evk board:
> - Watchdog
> - Power Management Integrated Circuit "PMIC" wrapper
> - MT6357 PMIC
> - MultiMediaCard "MMC" & Secure Digital "SD" controller
> - USB controller
> - Ethernet MAC controller
> 
> Add CPU Freq & IDLE support for this board.
> 
> All previous dependancies are merged and released into the v6.4-rc1.
> 
> === Build:
> 
> To test this serie, cherry-pick this serie, and build it using the arm64
> defconfig.
> 
> Regards,
> Alex
> 
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> ---
> Changes in v8:
> - Change vqmmc-supply of mmc1 node.
> - Remove all always-on regulators from the board devicetree.
> - Link to v7: https://lore.kernel.org/r/20230203-evk-board-support-v7-0-98cbdfac656e@baylibre.com
> 
> Changes in v7:
> - Rebase to the kernel v6.4-rc1.
> - Remove "dt-bindings: watchdog: mediatek,mtk-wdt: add mt8365" because
>    it was applied.
> - Link to v6: https://lore.kernel.org/r/20230203-evk-board-support-v6-0-8d6b1cfe7f29@baylibre.com
> 
> Changes in v6:
> - Add commit message for the arm64 defconfig changes
> - Fix the mail list
> - Link to v5: https://lore.kernel.org/r/20230203-evk-board-support-v5-0-1883c1b405ad@baylibre.com
> 
> Changes in v5:
> - Add patches to build the MT6357 regulator driver and MTK PMIC keys by default
> - Remove "dt-bindings: pinctrl: mediatek,mt8365-pinctrl: add drive strength property"
>    patch from this serie and add it to the pinctrl serie [3]
> - Link to v4: https://lore.kernel.org/r/20230203-evk-board-support-v4-0-5cffe66a38c0@baylibre.com
> 
> Changes in v4:
> - Remove v3 applied patch from the serie:
>    - arm64: dts: mediatek: add ethernet support for mt8365 SoC
>    - arm64: dts: mediatek: add mmc support for mt8365 SoC
>    - arm64: dts: mediatek: add mt6357 device-tree
>    - arm64: dts: mediatek: add pwrap support to mt8365 SoC
>    - arm64: dts: mediatek: Increase the size BL31 reserved memory
> - Drop "arm64: dts: mediatek: fix systimer properties" which is done [1]
> - Fix style, typo and re-order properties.
> - Use interrupts-extended for the PMIC node.
> - Link to v3: https://lore.kernel.org/r/20230203-evk-board-support-v3-0-0003e80e0095@baylibre.com
> 
> Changes in v3:
> - Remove v2 applied patch from the serie:
>    - dt-bindings: mmc: mediatek,mtk-sd: add mt8365
> - Add trailers and simply resend.
> - Link to v2: https://lore.kernel.org/r/20230203-evk-board-support-v2-0-6ec7cdb10ccf@baylibre.com
> 
> ---
> Alexandre Mergnat (9):
>        arm64: defconfig: enable MT6357 regulator
>        arm64: defconfig: enable Mediatek PMIC key
>        arm64: dts: mediatek: add watchdog support for mt8365 SoC
>        arm64: dts: mediatek: add mt6357 PMIC support for mt8365-evk
>        arm64: dts: mediatek: add mmc support for mt8365-evk
>        arm64: dts: mediatek: add usb controller support for mt8365-evk
>        arm64: dts: mediatek: add ethernet support for mt8365-evk
>        arm64: dts: mediatek: add OPP support for mt8365 SoC
>        arm64: dts: mediatek: add cpufreq support for mt8365-evk
> 
> Amjad Ouled-Ameur (1):
>        arm64: dts: mediatek: Add CPU Idle support
> 
>   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 235 ++++++++++++++++++++++++++++
>   arch/arm64/boot/dts/mediatek/mt8365.dtsi    | 142 +++++++++++++++++
>   arch/arm64/configs/defconfig                |   2 +
>   3 files changed, 379 insertions(+)
> ---
> base-commit: d2b7e0f7ff8e0b21e4c8d0ae6dfa38786fe44b35
> change-id: 20230203-evk-board-support-d5b7a839ed7b
> 
> Best regards,

Whole series applied, thanks!

Re: [PATCH v8 00/10] Improve the MT8365 SoC and EVK board support

[Alexandre Mergnat]

Awesome !!!

Thank you Matthias

Regards,
Alexandre


Le lun. 29 mai 2023 à 15:22, Matthias Brugger <matthias.bgg@gmail.com> a écrit :
>
>
>
> On 25/05/2023 10:33, Alexandre Mergnat wrote:
> > This commits are based on the Fabien Parent <fparent@baylibre.com> work.
> >
> > The purpose of this series is to add the following HWs / IPs support for
> > the mt8365-evk board:
> > - Watchdog
> > - Power Management Integrated Circuit "PMIC" wrapper
> > - MT6357 PMIC
> > - MultiMediaCard "MMC" & Secure Digital "SD" controller
> > - USB controller
> > - Ethernet MAC controller
> >
> > Add CPU Freq & IDLE support for this board.
> >
> > All previous dependancies are merged and released into the v6.4-rc1.
> >
> > === Build:
> >
> > To test this serie, cherry-pick this serie, and build it using the arm64
> > defconfig.
> >
> > Regards,
> > Alex
> >
> > Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> > ---
> > Changes in v8:
> > - Change vqmmc-supply of mmc1 node.
> > - Remove all always-on regulators from the board devicetree.
> > - Link to v7: https://lore.kernel.org/r/20230203-evk-board-support-v7-0-98cbdfac656e@baylibre.com
> >
> > Changes in v7:
> > - Rebase to the kernel v6.4-rc1.
> > - Remove "dt-bindings: watchdog: mediatek,mtk-wdt: add mt8365" because
> >    it was applied.
> > - Link to v6: https://lore.kernel.org/r/20230203-evk-board-support-v6-0-8d6b1cfe7f29@baylibre.com
> >
> > Changes in v6:
> > - Add commit message for the arm64 defconfig changes
> > - Fix the mail list
> > - Link to v5: https://lore.kernel.org/r/20230203-evk-board-support-v5-0-1883c1b405ad@baylibre.com
> >
> > Changes in v5:
> > - Add patches to build the MT6357 regulator driver and MTK PMIC keys by default
> > - Remove "dt-bindings: pinctrl: mediatek,mt8365-pinctrl: add drive strength property"
> >    patch from this serie and add it to the pinctrl serie [3]
> > - Link to v4: https://lore.kernel.org/r/20230203-evk-board-support-v4-0-5cffe66a38c0@baylibre.com
> >
> > Changes in v4:
> > - Remove v3 applied patch from the serie:
> >    - arm64: dts: mediatek: add ethernet support for mt8365 SoC
> >    - arm64: dts: mediatek: add mmc support for mt8365 SoC
> >    - arm64: dts: mediatek: add mt6357 device-tree
> >    - arm64: dts: mediatek: add pwrap support to mt8365 SoC
> >    - arm64: dts: mediatek: Increase the size BL31 reserved memory
> > - Drop "arm64: dts: mediatek: fix systimer properties" which is done [1]
> > - Fix style, typo and re-order properties.
> > - Use interrupts-extended for the PMIC node.
> > - Link to v3: https://lore.kernel.org/r/20230203-evk-board-support-v3-0-0003e80e0095@baylibre.com
> >
> > Changes in v3:
> > - Remove v2 applied patch from the serie:
> >    - dt-bindings: mmc: mediatek,mtk-sd: add mt8365
> > - Add trailers and simply resend.
> > - Link to v2: https://lore.kernel.org/r/20230203-evk-board-support-v2-0-6ec7cdb10ccf@baylibre.com
> >
> > ---
> > Alexandre Mergnat (9):
> >        arm64: defconfig: enable MT6357 regulator
> >        arm64: defconfig: enable Mediatek PMIC key
> >        arm64: dts: mediatek: add watchdog support for mt8365 SoC
> >        arm64: dts: mediatek: add mt6357 PMIC support for mt8365-evk
> >        arm64: dts: mediatek: add mmc support for mt8365-evk
> >        arm64: dts: mediatek: add usb controller support for mt8365-evk
> >        arm64: dts: mediatek: add ethernet support for mt8365-evk
> >        arm64: dts: mediatek: add OPP support for mt8365 SoC
> >        arm64: dts: mediatek: add cpufreq support for mt8365-evk
> >
> > Amjad Ouled-Ameur (1):
> >        arm64: dts: mediatek: Add CPU Idle support
> >
> >   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 235 ++++++++++++++++++++++++++++
> >   arch/arm64/boot/dts/mediatek/mt8365.dtsi    | 142 +++++++++++++++++
> >   arch/arm64/configs/defconfig                |   2 +
> >   3 files changed, 379 insertions(+)
> > ---
> > base-commit: d2b7e0f7ff8e0b21e4c8d0ae6dfa38786fe44b35
> > change-id: 20230203-evk-board-support-d5b7a839ed7b
> >
> > Best regards,
>
> Whole series applied, thanks!

Re: [PATCH v8 01/10] arm64: defconfig: enable MT6357 regulator

[Krzysztof Kozlowski]

On 25/05/2023 10:33, Alexandre Mergnat wrote:
> Enable the power regulator support of MediaTek MT6357 PMIC. This driver
> supports the control of different power rails of device through
> regulator interface.
> 

It's nice to say which boards/SoCs use it which would justify why we
want it in defconfig.

Your last sentence brings no new information - it's kind of obvious for
every PMIC. Instead of redundant information add something actually
missing - why do we need it in defconfig, IOW, what platform needs it?

Best regards,
Krzysztof