The Netronix board E70K02 can be found some several Ebook-Readers,
at least the Kobo Libra H2O and the Tolino Vision 5. The board
is equipped with different SoCs requiring different pinmuxes.
For now the following peripherals are included:
- LED
- Power Key
- Cover (gpio via hall sensor)
- RC5T619 PMIC
- Backlight via lm3630a
- Wifi sdio chip detection (mmc-powerseq and stuff)
It is based on vendor kernel but heavily reworked due to many
changed bindings.
Known limitations: cold colored backlight does not work due to
incompatible hard coded overvoltage setting in the driver.
Signed-off-by: Andreas Kemnade <[email protected]>
---
Changed in v2:
- s/_/-/ in node name wifi-powerseq
- correct led node name
arch/arm/boot/dts/e70k02.dtsi | 320 ++++++++++++++++++++++++++++++++++
1 file changed, 320 insertions(+)
create mode 100644 arch/arm/boot/dts/e70k02.dtsi
diff --git a/arch/arm/boot/dts/e70k02.dtsi b/arch/arm/boot/dts/e70k02.dtsi
new file mode 100644
index 000000000000..156de653f2cd
--- /dev/null
+++ b/arch/arm/boot/dts/e70k02.dtsi
@@ -0,0 +1,320 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2021 Andreas Kemnade
+ * based on works
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ * and
+ * Copyright (C) 2014 Ricoh Electronic Devices Co., Ltd
+ *
+ * Netronix E70K02 board common.
+ * This board is equipped with different SoCs and
+ * found in ebook-readers like the Kobo Clara HD (with i.MX6SLL) and
+ * the Tolino Shine 3 (with i.MX6SL)
+ */
+#include <dt-bindings/input/input.h>
+
+/ {
+ aliases {
+ mmc0 = &usdhc1;
+ mmc1 = &usdhc3;
+ };
+
+ chosen {
+ stdout-path = &uart1;
+ };
+
+ gpio_keys: gpio-keys {
+ compatible = "gpio-keys";
+
+ power {
+ label = "Power";
+ gpios = <&gpio4 25 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_POWER>;
+ wakeup-source;
+ };
+
+ cover {
+ label = "Cover";
+ gpios = <&gpio4 23 GPIO_ACTIVE_LOW>;
+ linux,code = <SW_LID>;
+ linux,input-type = <EV_SW>;
+ wakeup-source;
+ };
+
+ pageup {
+ label = "PageUp";
+ gpios = <&gpio4 0 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_PAGEUP>;
+ };
+
+ pagedown {
+ label = "PageDown";
+ gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_PAGEDOWN>;
+ };
+ };
+
+ leds: leds {
+ compatible = "gpio-leds";
+
+ led {
+ label = "e70k02:white:on";
+ gpios = <&gpio4 17 GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "timer";
+ };
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x80000000 0x20000000>;
+ };
+
+ reg_wifi: regulator-wifi {
+ compatible = "regulator-fixed";
+ regulator-name = "SD3_SPWR";
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ gpio = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ wifi_pwrseq: wifi-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ post-power-on-delay-ms = <20>;
+ reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+ };
+};
+
+&i2c1 {
+ clock-frequency = <100000>;
+ status = "okay";
+
+ lm3630a: backlight@36 {
+ reg = <0x36>;
+ compatible = "ti,lm3630a";
+ enable-gpios = <&gpio2 10 GPIO_ACTIVE_HIGH>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led@0 {
+ reg = <0>;
+ led-sources = <0>;
+ label = "backlight_warm";
+ default-brightness = <0>;
+ max-brightness = <255>;
+ };
+
+ led@1 {
+ reg = <1>;
+ led-sources = <1>;
+ label = "backlight_cold";
+ default-brightness = <0>;
+ max-brightness = <255>;
+ };
+ };
+
+ /* TODO: KX122 acceleration sensor a 0x1e */
+
+};
+
+&i2c2 {
+ clock-frequency = <100000>;
+ status = "okay";
+
+ /* TODO: CYTTSP5 touch controller at 0x24 */
+
+ /* TODO: SY7636 PMIC for E Ink at 0x62 */
+
+};
+
+&i2c3 {
+ clock-frequency = <100000>;
+ status = "okay";
+
+ ricoh619: pmic@32 {
+ compatible = "ricoh,rc5t619";
+ reg = <0x32>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <19 IRQ_TYPE_EDGE_FALLING>;
+ system-power-controller;
+
+ regulators {
+ dcdc1_reg: DCDC1 {
+ regulator-name = "DCDC1";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1875000>;
+ regulator-always-on;
+ regulator-boot-on;
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <900000>;
+ regulator-suspend-min-microvolt = <900000>;
+ };
+ };
+
+ /* Core3_3V3 */
+ dcdc2_reg: DCDC2 {
+ regulator-name = "DCDC2";
+ regulator-always-on;
+ regulator-boot-on;
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <3300000>;
+ regulator-suspend-min-microvolt = <3300000>;
+ };
+ };
+
+ dcdc3_reg: DCDC3 {
+ regulator-name = "DCDC3";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1875000>;
+ regulator-always-on;
+ regulator-boot-on;
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <1140000>;
+ regulator-suspend-min-microvolt = <1140000>;
+ };
+ };
+
+ /* Core4_1V2 */
+ dcdc4_reg: DCDC4 {
+ regulator-name = "DCDC4";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ regulator-boot-on;
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <1140000>;
+ regulator-suspend-min-microvolt = <1140000>;
+ };
+ };
+
+ /* Core4_1V8 */
+ dcdc5_reg: DCDC5 {
+ regulator-name = "DCDC5";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <1700000>;
+ regulator-suspend-min-microvolt = <1700000>;
+ };
+ };
+
+ ldo1_reg: LDO1 {
+ regulator-name = "LDO1";
+ regulator-boot-on;
+ };
+
+ /* Core1_3V3 */
+ ldo2_reg: LDO2 {
+ regulator-name = "LDO2";
+ regulator-always-on;
+ regulator-boot-on;
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-max-microvolt = <3000000>;
+ regulator-suspend-min-microvolt = <3000000>;
+ };
+ };
+
+ /* Core5_1V2 */
+ ldo3_reg: LDO3 {
+ regulator-name = "LDO3";
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ ldo4_reg: LDO4 {
+ regulator-name = "LDO4";
+ regulator-boot-on;
+ };
+
+ /* SPD_3V3 */
+ ldo5_reg: LDO5 {
+ regulator-name = "LDO5";
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ /* DDR_0V6 */
+ ldo6_reg: LDO6 {
+ regulator-name = "LDO6";
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ /* VDD_PWM */
+ ldo7_reg: LDO7 {
+ regulator-name = "LDO7";
+ regulator-boot-on;
+ };
+
+ /* ldo_1v8 */
+ ldo8_reg: LDO8 {
+ regulator-name = "LDO8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-boot-on;
+ };
+
+ ldo9_reg: LDO9 {
+ regulator-name = "LDO9";
+ regulator-boot-on;
+ };
+
+ ldo10_reg: LDO10 {
+ regulator-name = "LDO10";
+ regulator-boot-on;
+ };
+
+ ldortc1_reg: LDORTC1 {
+ regulator-name = "LDORTC1";
+ regulator-boot-on;
+ };
+ };
+ };
+};
+
+&snvs_rtc {
+ /* we are using the rtc in the pmic, not disabled in imx6sll.dtsi */
+ status = "disabled";
+};
+
+&uart1 {
+ status = "okay";
+};
+
+&usdhc1 {
+ non-removable;
+ no-1-8-v;
+ status = "okay";
+};
+
+&usdhc3 {
+ vmmc-supply = <®_wifi>;
+ mmc-pwrseq = <&wifi_pwrseq>;
+ cap-power-off-card;
+ non-removable;
+ status = "okay";
+};
+
+&usbotg1 {
+ pinctrl-names = "default";
+ disable-over-current;
+ srp-disable;
+ hnp-disable;
+ adp-disable;
+ status = "okay";
+};
--
2.30.2