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ARM: dts: imx50-kobo-aura: add epd pmic description

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Kobo Aura (N514) includes a TPS65185 PMIC for the epaper display.

Add description for this pmic and its vin power-supply.

Signed-off-by: Josua Mayer <josua.mayer@jm0.eu>
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Josua Mayer
2026-01-13 16:31:35 +01:00
committed by Shawn Guo
parent e9c48e5586
commit 9fcca3e285
1 changed files with 59 additions and 1 deletions
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60
arch/arm/boot/dts/nxp/imx/imx50-kobo-aura.dts
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@@ -58,6 +58,16 @@
};
};
epd_pmic_supply: regulator-epd-pmic-in {
compatible = "regulator-fixed";
regulator-name = "epd_pmic_supply";
gpio = <&gpio1 27 GPIO_ACTIVE_HIGH>;
enable-active-high;
startup-delay-us = <20000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_epd_pmic_supply>;
};
sd2_pwrseq: pwrseq {
compatible = "mmc-pwrseq-simple";
pinctrl-names = "default";
@@ -135,7 +145,34 @@
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";
/* TODO: TPS65185 PMIC for E Ink at 0x68 */
pmic@68 {
compatible = "ti,tps65185";
reg = <0x68>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_epd_pmic>;
pwr-good-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>;
vcom-ctrl-gpios = <&gpio4 21 GPIO_ACTIVE_HIGH>;
enable-gpios = <&gpio3 30 GPIO_ACTIVE_HIGH>;
wakeup-gpios = <&gpio3 29 GPIO_ACTIVE_HIGH>;
vin-supply = <&epd_pmic_supply>;
interrupts-extended = <&gpio4 15 IRQ_TYPE_LEVEL_LOW>;
regulators {
vcom {
regulator-name = "vcom";
};
vposneg {
regulator-name = "vposneg";
regulator-min-microvolt = <15000000>;
regulator-max-microvolt = <15000000>;
};
v3p3 {
regulator-name = "v3p3";
};
};
};
};
&i2c3 {
@@ -161,6 +198,27 @@
>;
};
pinctrl_epd_pmic: epd-pmic-grp {
fsl,pins = <
/* PWRUP */
MX50_PAD_EPDC_PWRCTRL1__GPIO3_30 0x0
/* WAKEUP */
MX50_PAD_EPDC_PWRCTRL0__GPIO3_29 0x0
/* VCOMCTRL */
MX50_PAD_EPDC_VCOM0__GPIO4_21 0x0
/* PWRGOOD: enable internal 100k pull-up */
MX50_PAD_EPDC_PWRSTAT__GPIO3_28 0xe0
/* INT: enable internal 100k pull-up */
MX50_PAD_ECSPI1_SS0__GPIO4_15 0xe0
>;
};
pinctrl_epd_pmic_supply: epd-pmic-supply-grp {
fsl,pins = <
MX50_PAD_EIM_CRE__GPIO1_27 0x0
>;
};
pinctrl_gpiokeys: gpiokeysgrp {
fsl,pins = <
MX50_PAD_CSPI_MISO__GPIO4_10 0x0