linux-kernel - [PATCH 1/2] ARM: dts: imx: imx6sll-kobo-clara2e: add regulator for EPD.

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Message-Id: <20251223-fp9931-clara2e-v1-1-e5b1cb79330a@kemnade.info>
Date: Tue, 23 Dec 2025 22:34:02 +0100
From: Andreas Kemnade <andreas@...nade.info>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Russell King <linux@...linux.org.uk>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Andreas Kemnade <andreas@...nade.info>
Subject: [PATCH 1/2] ARM: dts: imx: imx6sll-kobo-clara2e: add regulator for
 EPD.

Now there is a driver and binding for the JD9930, so add the information
to the devicetree for revision b.

Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
 .../boot/dts/nxp/imx/imx6sll-kobo-clara2e-b.dts    | 61 +++++++++++++++++++++-
 1 file changed, 60 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-b.dts b/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-b.dts
index f81aeacf5142..f5e88764a08c 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-b.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-b.dts
@@ -16,8 +16,67 @@
 / {
 	model = "Kobo Clara 2E";
 	compatible = "kobo,clara2e-b", "kobo,clara2e", "fsl,imx6sll";
+
+	epd_pmic_supply: regulator-epd-pmic-in {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_epd_pmic_supply>;
+		regulator-name = "epd_pmic_supply";
+		gpio = <&gpio2 14 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		startup-delay-us = <20000>;
+	};
 };
 
 &i2c2 {
-	/* EPD PMIC JD9930 at 0x18 */
+	jd9930: pmic@18 {
+		compatible = "fitipower,jd9930", "fitipower,fp9931";
+		reg = <0x18>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_jd9930_gpio>;
+		vin-supply = <&epd_pmic_supply>;
+		pg-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
+		en-ts-gpios = <&gpio2 9 GPIO_ACTIVE_HIGH>;
+		enable-gpios = <&gpio2 8 GPIO_ACTIVE_HIGH>;
+		fitipower,tdly-ms = <2 2 2 2>;
+
+		regulators {
+			vcom_reg: vcom {
+				regulator-name = "vcom";
+				/*
+				 * For optimal performance these should be
+				 * tuned on a per batch basis e.g. using
+				 * overlays.
+				 */
+				regulator-min-microvolt = <2352840>;
+				regulator-max-microvolt = <2352840>;
+			};
+
+			vposneg_reg: vposneg {
+				regulator-name = "vposneg";
+				regulator-min-microvolt = <15060000>;
+				regulator-max-microvolt = <15060000>;
+			};
+
+			v3p3_reg: v3p3 {
+				regulator-name = "v3p3";
+			};
+		};
+	};
+};
+
+&iomuxc {
+	pinctrl_jd9930_gpio: jd9930-gpiogrp {
+		fsl,pins = <
+			MX6SLL_PAD_EPDC_PWR_CTRL0__GPIO2_IO07	0x17059 /* PG */
+			MX6SLL_PAD_EPDC_PWR_CTRL1__GPIO2_IO08	0x40010059 /* EN */
+			MX6SLL_PAD_EPDC_PWR_CTRL2__GPIO2_IO09	0x40010059 /* EN_TS */
+		>;
+	};
+
+	pinctrl_epd_pmic_supply: epd-pmic-supplygrp {
+		fsl,pins = <
+			MX6SLL_PAD_EPDC_PWR_WAKE__GPIO2_IO14	0x40010059
+		>;
+	};
 };

-- 
2.47.3