Add the EPD PMIC for the e70k02 based devices as a step towards full EPD
support.

Acked-by: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Andreas Kemnade <akemnade@kernel.org>
---
 arch/arm/boot/dts/nxp/imx/e70k02.dtsi              | 25 +++++++++++++++++++++-
 .../arm/boot/dts/nxp/imx/imx6sl-tolino-vision5.dts | 24 +++++++++++++++++++++
 .../arm/boot/dts/nxp/imx/imx6sll-kobo-librah2o.dts | 24 +++++++++++++++++++++
 3 files changed, 72 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/nxp/imx/e70k02.dtsi b/arch/arm/boot/dts/nxp/imx/e70k02.dtsi
index dcc3c9d488a88..b4f42f71c6c49 100644
--- a/arch/arm/boot/dts/nxp/imx/e70k02.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/e70k02.dtsi
@@ -69,6 +69,14 @@ memory@80000000 {
 		reg = <0x80000000 0x20000000>;
 	};
 
+	epd_pmic_supply: regulator-epd-pmic-in {
+		compatible = "regulator-fixed";
+		regulator-name = "epd_pmic_supply";
+		gpio = <&gpio2 14 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <20000>;
+		enable-active-high;
+	};
+
 	reg_wifi: regulator-wifi {
 		compatible = "regulator-fixed";
 		regulator-name = "SD3_SPWR";
@@ -133,7 +141,22 @@ touchscreen@24 {
 		vdd-supply = <&ldo5_reg>;
 	};
 
-	/* TODO: SY7636 PMIC for E Ink at 0x62 */
+	sy7636: pmic@62 {
+		compatible = "silergy,sy7636a";
+		reg = <0x62>;
+		enable-gpios = <&gpio2 8 GPIO_ACTIVE_HIGH>;
+		vcom-en-gpios = <&gpio2 3 GPIO_ACTIVE_HIGH>;
+		epd-pwr-good-gpios = <&gpio2 13 GPIO_ACTIVE_HIGH>;
+		vin-supply = <&epd_pmic_supply>;
+
+		#thermal-sensor-cells = <0>;
+
+		regulators {
+			reg_epdpmic: vcom {
+				regulator-name = "vcom";
+			};
+		};
+	};
 
 };
 
diff --git a/arch/arm/boot/dts/nxp/imx/imx6sl-tolino-vision5.dts b/arch/arm/boot/dts/nxp/imx/imx6sl-tolino-vision5.dts
index a2534c422a522..f8709a9524093 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6sl-tolino-vision5.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6sl-tolino-vision5.dts
@@ -26,6 +26,11 @@ / {
 	compatible = "kobo,tolino-vision5", "fsl,imx6sl";
 };
 
+&epd_pmic_supply {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_epd_pmic_supply>;
+};
+
 &gpio_keys {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_gpio_keys>;
@@ -59,6 +64,12 @@ MX6SL_PAD_FEC_RXD1__GPIO4_IO18          0x10059 /* TP_RST */
 		>;
 	};
 
+	pinctrl_epd_pmic_supply: epd-pmic-supplygrp {
+		fsl,pins = <
+			MX6SL_PAD_EPDC_PWRWAKEUP__GPIO2_IO14    0x40010059
+		>;
+	};
+
 	pinctrl_gpio_keys: gpio-keysgrp {
 		fsl,pins = <
 			MX6SL_PAD_FEC_CRS_DV__GPIO4_IO25	0x17059	/* PWR_SW */
@@ -159,6 +170,14 @@ MX6SL_PAD_KEY_COL2__GPIO3_IO28		0x1b8b1 /* ricoh619 bat_low_int */
 		>;
 	};
 
+	pinctrl_sy7636_gpio: sy7636-gpiogrp {
+		fsl,pins = <
+			MX6SL_PAD_EPDC_VCOM0__GPIO2_IO03        0x40010059 /* VCOM_CTRL */
+			MX6SL_PAD_EPDC_PWRCTRL1__GPIO2_IO08     0x40010059 /* EN */
+			MX6SL_PAD_EPDC_PWRSTAT__GPIO2_IO13      0x17059 /* PWR_GOOD */
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX6SL_PAD_UART1_TXD__UART1_TX_DATA 0x1b0b1
@@ -329,6 +348,11 @@ &ricoh619 {
 	pinctrl-0 = <&pinctrl_ricoh_gpio>;
 };
 
+&sy7636 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sy7636_gpio>;
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;
diff --git a/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-librah2o.dts b/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-librah2o.dts
index 660620d226f71..19bbe60331b36 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-librah2o.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-librah2o.dts
@@ -36,6 +36,11 @@ &cpu0 {
 	soc-supply = <&dcdc1_reg>;
 };
 
+&epd_pmic_supply {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_epd_pmic_supply>;
+};
+
 &gpio_keys {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_gpio_keys>;
@@ -69,6 +74,12 @@ MX6SLL_PAD_GPIO4_IO18__GPIO4_IO18	0x10059 /* TP_RST */
 		>;
 	};
 
+	pinctrl_epd_pmic_supply: epd-pmic-supplygrp {
+		fsl,pins = <
+			MX6SLL_PAD_EPDC_PWR_WAKE__GPIO2_IO14    0x40010059
+		>;
+	};
+
 	pinctrl_gpio_keys: gpio-keysgrp {
 		fsl,pins = <
 			MX6SLL_PAD_GPIO4_IO25__GPIO4_IO25	0x17059	/* PWR_SW */
@@ -169,6 +180,14 @@ MX6SLL_PAD_KEY_COL2__GPIO3_IO28		0x1b8b1 /* ricoh619 bat_low_int */
 		>;
 	};
 
+	pinctrl_sy7636_gpio: sy7636-gpiogrp {
+		fsl,pins = <
+			MX6SLL_PAD_EPDC_VCOM0__GPIO2_IO03       0x40010059 /* VCOM_CTRL */
+			MX6SLL_PAD_EPDC_PWR_CTRL1__GPIO2_IO08   0x40010059 /* EN */
+			MX6SLL_PAD_EPDC_PWR_STAT__GPIO2_IO13    0x17059 /* PWR_GOOD */
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX6SLL_PAD_UART1_TXD__UART1_DCE_TX 0x1b0b1
@@ -319,6 +338,11 @@ &ricoh619 {
 	pinctrl-0 = <&pinctrl_ricoh_gpio>;
 };
 
+&sy7636 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sy7636_gpio>;
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;

-- 
2.47.3