@@ -290,6 +290,8 @@ dtb-$(CONFIG_SOC_IMX6SL) += \
dtb-$(CONFIG_SOC_IMX6SLL) += \
imx6sll-evk.dtb \
imx6sll-kobo-clarahd.dtb \
+ imx6sll-kobo-clara2e-a.dtb \
+ imx6sll-kobo-clara2e-b.dtb \
imx6sll-kobo-librah2o.dtb
dtb-$(CONFIG_SOC_IMX6SX) += \
imx6sx-nitrogen6sx.dtb \
new file mode 100644
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: (GPL-2.0)
+/*
+ * Device tree for the Kobo Clara 2E rev A ebook reader
+ *
+ * Name on mainboard is: 37NB-E60K2M+4A2
+ * Serials start with: E60K2M (a number also seen in
+ * vendor kernel sources)
+ *
+ * Copyright 2024 Andreas Kemnade
+ */
+
+/dts-v1/;
+
+#include "imx6sll-kobo-clara2e-common.dtsi"
+
+/ {
+ model = "Kobo Clara 2E";
+ compatible = "kobo,clara2e-b", "kobo,clara2e", "fsl,imx6sll";
+};
+
+&i2c2 {
+ /* EPD PMIC SY7636 at 0x62 */
+};
new file mode 100644
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: (GPL-2.0)
+/*
+ * Device tree for the Kobo Clara 2E rev B ebook reader
+ *
+ * Name on mainboard is: 37NB-E60K2M+4B0
+ * Serials start with: E60K2M (a number also seen in
+ * vendor kernel sources)
+ *
+ * Copyright 2024 Andreas Kemnade
+ */
+
+/dts-v1/;
+
+#include "imx6sll-kobo-clara2e-common.dtsi"
+
+/ {
+ model = "Kobo Clara 2E";
+ compatible = "kobo,clara2e-b", "kobo,clara2e", "fsl,imx6sll";
+};
+
+&i2c2 {
+ /* EPD PMIC JD9930 at 0x18 */
+};
new file mode 100644
@@ -0,0 +1,514 @@
+// SPDX-License-Identifier: (GPL-2.0)
+/*
+ * Common part for Kobo Clara 2e device tree
+ * Copyright 2024 Andreas Kemnade
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+#include "imx6sll.dtsi"
+
+/ {
+ aliases {
+ mmc0 = &usdhc2;
+ mmc1 = &usdhc3;
+ };
+
+ chosen {
+ stdout-path = &uart1;
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpio_keys>;
+
+ key-cover {
+ label = "Cover";
+ gpios = <&gpio4 23 GPIO_ACTIVE_LOW>;
+ linux,code = <SW_LID>;
+ linux,input-type = <EV_SW>;
+ wakeup-source;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_led>;
+
+ led {
+ color = <LED_COLOR_ID_WHITE>;
+ function = LED_FUNCTION_POWER;
+ 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;
+ };
+};
+
+&clks {
+ assigned-clocks = <&clks IMX6SLL_CLK_PLL4_AUDIO_DIV>;
+ assigned-clock-rates = <393216000>;
+};
+
+&cpu0 {
+ arm-supply = <&buck1>;
+ soc-supply = <&buck2>;
+};
+
+&i2c1 {
+ pinctrl-names = "default","sleep";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ pinctrl-1 = <&pinctrl_i2c1_sleep>;
+ clock-frequency = <100000>;
+ status = "okay";
+
+ /* backlight aw99703 at 0x36 */
+};
+
+&i2c2 {
+ pinctrl-names = "default","sleep";
+ pinctrl-0 = <&pinctrl_i2c2>;
+ pinctrl-1 = <&pinctrl_i2c2_sleep>;
+ clock-frequency = <100000>;
+ status = "okay";
+
+ /* backlight aw99703 at 0x36 */
+
+ touchscreen@38 {
+ compatible = "focaltech,ft5426";
+ reg = <0x38>;
+ pinctrl-names = "default", "suspend";
+ pinctrl-0 = <&pinctrl_touch_gpio>;
+ pinctrl-1 = <&pinctrl_touch_gpio_sleep>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
+ reset-gpios = <&gpio4 18 GPIO_ACTIVE_LOW>;
+ touchscreen-size-x = <1072>;
+ touchscreen-size-y = <1448>;
+ touchscreen-swapped-x-y;
+ };
+};
+
+&i2c3 {
+ /* Bus seems to be in bad state after boot, allow full recovery */
+ pinctrl-names = "default", "gpio";
+ pinctrl-0 = <&pinctrl_i2c3>;
+ pinctrl-1 = <&pinctrl_i2c3_gpio>;
+ sda-gpios = <&gpio3 22 GPIO_ACTIVE_HIGH>;
+ scl-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
+ clock-frequency = <100000>;
+ status = "okay";
+
+ pmic@4b {
+ compatible = "rohm,bd71879", "rohm,bd71828";
+ reg = <0x4b>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_bd71828>;
+
+ interrupt-parent = <&gpio4>;
+ interrupts = <19 IRQ_TYPE_LEVEL_LOW>;
+ system-power-controller;
+
+ clocks = <&clks 0>;
+ #clock-cells = <0>;
+ clock-output-names = "bd71828-32k-out";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-reserved-ranges = <0 1>, <2 1>;
+
+ rohm,charger-sense-resistor-ohms = <30000000>;
+
+ regulators {
+ LDO1 {
+ name = "LDO1";
+ regulator-name = "ldo1";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ LDO2 {
+ name = "LDO2";
+ regulator-name = "ldo2";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ LDO3 {
+ name = "LDO3";
+ regulator-name = "ldo3";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ ldo4: LDO4 {
+ name = "LDO4";
+ regulator-name = "ldo4";
+ regulator-always-on;
+ regulator-min-microvolt = <1100000>;
+ regulator-max-microvolt = <1100000>;
+ };
+
+ LDO5 {
+ name = "LDO5";
+ regulator-name = "ldo5";
+ regulator-always-on;
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ LDO6 {
+ name = "LDO6";
+ regulator-name = "ldo6";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ LDO7 {
+ name = "LDO7";
+ regulator-name = "ldo7";
+ regulator-always-on;
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ buck1: BUCK1 {
+ name = "BUCK1";
+ regulator-name = "buck1";
+ regulator-always-on;
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-boot-on;
+ };
+
+ buck2: BUCK2 {
+ name = "BUCK2";
+ regulator-name = "buck2";
+ regulator-always-on;
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-boot-on;
+ };
+
+ BUCK3 {
+ name = "BUCK3";
+ regulator-name = "buck3";
+ regulator-always-on;
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-boot-on;
+ };
+
+ BUCK4 {
+ name = "BUCK4";
+ regulator-name = "buck4";
+ regulator-always-on;
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-boot-on;
+ };
+
+ BUCK5 {
+ name = "BUCK5";
+ regulator-name = "buck5";
+ regulator-always-on;
+ regulator-min-microvolt = <2500000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ BUCK6 {
+ name = "BUCK6";
+ regulator-name = "buck6";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ };
+
+ BUCK7 {
+ name = "BUCK7";
+ regulator-name = "buck7";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ };
+ };
+ };
+};
+
+&iomuxc {
+ pinctrl_touch_gpio: touch-gpiogrp {
+ fsl,pins = <
+ MX6SLL_PAD_GPIO4_IO24__GPIO4_IO24 0x17059 /* TP_INT */
+ MX6SLL_PAD_GPIO4_IO18__GPIO4_IO18 0x10059 /* TP_RST */
+ >;
+ };
+
+ pinctrl_touch_gpio_sleep: touch-gpio-sleepgrp {
+ fsl,pins = <
+ MX6SLL_PAD_GPIO4_IO24__GPIO4_IO24 0x10059 /* TP_INT */
+ MX6SLL_PAD_GPIO4_IO18__GPIO4_IO18 0x10059 /* TP_RST */
+ >;
+ };
+
+ pinctrl_gpio_keys: gpio-keysgrp {
+ fsl,pins = <
+ MX6SLL_PAD_GPIO4_IO25__GPIO4_IO25 0x17059 /* PWR_SW */
+ MX6SLL_PAD_GPIO4_IO23__GPIO4_IO23 0x17059 /* HALL_EN */
+ >;
+ };
+
+ pinctrl_i2c1: i2c1grp {
+ fsl,pins = <
+ MX6SLL_PAD_I2C1_SCL__I2C1_SCL 0x4001f8b1
+ MX6SLL_PAD_I2C1_SDA__I2C1_SDA 0x4001f8b1
+ >;
+ };
+
+ pinctrl_i2c1_sleep: i2c1-sleepgrp {
+ fsl,pins = <
+ MX6SLL_PAD_I2C1_SCL__I2C1_SCL 0x400108b1
+ MX6SLL_PAD_I2C1_SDA__I2C1_SDA 0x400108b1
+ >;
+ };
+
+ pinctrl_i2c2: i2c2grp {
+ fsl,pins = <
+ MX6SLL_PAD_I2C2_SCL__I2C2_SCL 0x4001f8b1
+ MX6SLL_PAD_I2C2_SDA__I2C2_SDA 0x4001f8b1
+ >;
+ };
+
+ pinctrl_i2c2_sleep: i2c2-sleepgrp {
+ fsl,pins = <
+ MX6SLL_PAD_I2C2_SCL__I2C2_SCL 0x400108b1
+ MX6SLL_PAD_I2C2_SDA__I2C2_SDA 0x400108b1
+ >;
+ };
+
+ pinctrl_i2c3: i2c3grp {
+ fsl,pins = <
+ MX6SLL_PAD_REF_CLK_24M__I2C3_SCL 0x4001f8b1
+ MX6SLL_PAD_REF_CLK_32K__I2C3_SDA 0x4001f8b1
+ >;
+ };
+
+ pinctrl_i2c3_gpio: i2c3-gpiogrp {
+ fsl,pins = <
+ MX6SLL_PAD_REF_CLK_24M__GPIO3_IO21 0x4001f8b1
+ MX6SLL_PAD_REF_CLK_32K__GPIO3_IO22 0x4001f8b1
+ >;
+ };
+
+ pinctrl_led: ledgrp {
+ fsl,pins = <
+ MX6SLL_PAD_GPIO4_IO17__GPIO4_IO17 0x10059
+ >;
+ };
+
+ pinctrl_uart1: uart1grp {
+ fsl,pins = <
+ MX6SLL_PAD_UART1_TXD__UART1_DCE_TX 0x1b0b1
+ MX6SLL_PAD_UART1_RXD__UART1_DCE_RX 0x1b0b1
+ >;
+ };
+
+ pinctrl_uart2: uart2grp {
+ fsl,pins = <
+ MX6SLL_PAD_LCD_ENABLE__UART2_DCE_RX 0x41b0b1
+ MX6SLL_PAD_LCD_HSYNC__UART2_DCE_TX 0x41b0b1
+ MX6SLL_PAD_LCD_VSYNC__UART2_DCE_RTS 0x41b0b1
+ MX6SLL_PAD_LCD_RESET__UART2_DCE_CTS 0x41b0b1
+ >;
+ };
+
+ pinctrl_uart2_sleep: uart2grp-sleep {
+ fsl,pins = <
+ MX6SLL_PAD_LCD_ENABLE__GPIO2_IO16 0x10059
+ MX6SLL_PAD_LCD_HSYNC__GPIO2_IO17 0x10059
+ MX6SLL_PAD_LCD_VSYNC__GPIO2_IO18 0x10059
+ MX6SLL_PAD_LCD_RESET__GPIO2_IO19 0x10059
+ >;
+ };
+
+ pinctrl_usbotg1: usbotg1grp {
+ fsl,pins = <
+ MX6SLL_PAD_EPDC_PWR_COM__USB_OTG1_ID 0x17059
+ >;
+ };
+
+ pinctrl_usdhc2: usdhc2grp {
+ fsl,pins = <
+ MX6SLL_PAD_SD2_CMD__SD2_CMD 0x17059
+ MX6SLL_PAD_SD2_CLK__SD2_CLK 0x13059
+ MX6SLL_PAD_SD2_DATA0__SD2_DATA0 0x17059
+ MX6SLL_PAD_SD2_DATA1__SD2_DATA1 0x17059
+ MX6SLL_PAD_SD2_DATA2__SD2_DATA2 0x17059
+ MX6SLL_PAD_SD2_DATA3__SD2_DATA3 0x17059
+ >;
+ };
+
+ pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD2_CMD__SD2_CMD 0x170b9
+ MX6SLL_PAD_SD2_CLK__SD2_CLK 0x130b9
+ MX6SLL_PAD_SD2_DATA0__SD2_DATA0 0x170b9
+ MX6SLL_PAD_SD2_DATA1__SD2_DATA1 0x170b9
+ MX6SLL_PAD_SD2_DATA2__SD2_DATA2 0x170b9
+ MX6SLL_PAD_SD2_DATA3__SD2_DATA3 0x170b9
+ >;
+ };
+
+ pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD2_CMD__SD2_CMD 0x170f9
+ MX6SLL_PAD_SD2_CLK__SD2_CLK 0x130f9
+ MX6SLL_PAD_SD2_DATA0__SD2_DATA0 0x170f9
+ MX6SLL_PAD_SD2_DATA1__SD2_DATA1 0x170f9
+ MX6SLL_PAD_SD2_DATA2__SD2_DATA2 0x170f9
+ MX6SLL_PAD_SD2_DATA3__SD2_DATA3 0x170f9
+ >;
+ };
+
+ pinctrl_usdhc2_sleep: usdhc2-sleepgrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD2_CMD__GPIO5_IO04 0x100f9
+ MX6SLL_PAD_SD2_CLK__GPIO5_IO05 0x100f9
+ MX6SLL_PAD_SD2_DATA0__GPIO5_IO01 0x100f9
+ MX6SLL_PAD_SD2_DATA1__GPIO4_IO30 0x100f9
+ MX6SLL_PAD_SD2_DATA2__GPIO5_IO03 0x100f9
+ MX6SLL_PAD_SD2_DATA3__GPIO4_IO28 0x100f9
+ >;
+ };
+
+ pinctrl_usdhc3: usdhc3grp {
+ fsl,pins = <
+ MX6SLL_PAD_SD3_CMD__SD3_CMD 0x11059
+ MX6SLL_PAD_SD3_CLK__SD3_CLK 0x11059
+ MX6SLL_PAD_SD3_DATA0__SD3_DATA0 0x11059
+ MX6SLL_PAD_SD3_DATA1__SD3_DATA1 0x11059
+ MX6SLL_PAD_SD3_DATA2__SD3_DATA2 0x11059
+ MX6SLL_PAD_SD3_DATA3__SD3_DATA3 0x11059
+ >;
+ };
+
+ pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD3_CMD__SD3_CMD 0x170b9
+ MX6SLL_PAD_SD3_CLK__SD3_CLK 0x170b9
+ MX6SLL_PAD_SD3_DATA0__SD3_DATA0 0x170b9
+ MX6SLL_PAD_SD3_DATA1__SD3_DATA1 0x170b9
+ MX6SLL_PAD_SD3_DATA2__SD3_DATA2 0x170b9
+ MX6SLL_PAD_SD3_DATA3__SD3_DATA3 0x170b9
+ >;
+ };
+
+ pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD3_CMD__SD3_CMD 0x170f9
+ MX6SLL_PAD_SD3_CLK__SD3_CLK 0x170f9
+ MX6SLL_PAD_SD3_DATA0__SD3_DATA0 0x170f9
+ MX6SLL_PAD_SD3_DATA1__SD3_DATA1 0x170f9
+ MX6SLL_PAD_SD3_DATA2__SD3_DATA2 0x170f9
+ MX6SLL_PAD_SD3_DATA3__SD3_DATA3 0x170f9
+ >;
+ };
+
+ pinctrl_usdhc3_sleep: usdhc3-sleepgrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD3_CMD__GPIO5_IO21 0x100c1
+ MX6SLL_PAD_SD3_CLK__GPIO5_IO18 0x100c1
+ MX6SLL_PAD_SD3_DATA0__GPIO5_IO19 0x100c1
+ MX6SLL_PAD_SD3_DATA1__GPIO5_IO20 0x100c1
+ MX6SLL_PAD_SD3_DATA2__GPIO5_IO16 0x100c1
+ MX6SLL_PAD_SD3_DATA3__GPIO5_IO17 0x100c1
+ >;
+ };
+
+ pinctrl_wifi_power: wifi-powergrp {
+ fsl,pins = <
+ MX6SLL_PAD_SD2_DATA6__GPIO4_IO29 0x10059
+ >;
+ };
+
+ pinctrl_bd71828: bd71828-gpiogrp {
+ fsl,pins = <
+ MX6SLL_PAD_KEY_COL0__GPIO3_IO24 0x1b8b1
+ MX6SLL_PAD_GPIO4_IO19__GPIO4_IO19 0x1b8b1
+ >;
+ };
+};
+
+&snvs_rtc {
+ /* we are using the rtc in the pmic, not disabled in imx6sll.dtsi */
+ status = "disabled";
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
+ status = "okay";
+};
+
+&uart2 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&pinctrl_uart2>;
+ pinctrl-1 = <&pinctrl_uart2_sleep>;
+ status = "okay";
+
+ /* requires LDO4 + power enable gpio */
+ bluetooth {
+ compatible = "nxp,88w8987-bt";
+ fw-init-baudrate = <1500000>;
+ };
+};
+
+&usbotg1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usbotg1>;
+ disable-over-current;
+ srp-disable;
+ hnp-disable;
+ adp-disable;
+ status = "okay";
+};
+
+&usdhc2 {
+ pinctrl-names = "default", "state_100mhz", "state_200mhz","sleep";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
+ pinctrl-3 = <&pinctrl_usdhc2_sleep>;
+ non-removable;
+ status = "okay";
+};
+
+&usdhc3 {
+ pinctrl-names = "default", "state_100mhz", "state_200mhz","sleep";
+ pinctrl-0 = <&pinctrl_usdhc3>;
+ pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
+ pinctrl-3 = <&pinctrl_usdhc3_sleep>;
+ /* card requires also ldo4 */
+ vmmc-supply = <®_wifi>;
+ cap-power-off-card;
+ non-removable;
+ status = "okay";
+};
Adds a devicetree for the Kobo Clara 2E Ebook reader. It is based on boards marked with "37NB-E60K2M+4A2" or "37NB-E60K2M+4B0". It is equipped with an i.MX6SLL SoC. Expected to work: - Buttons - Wifi - Bluetooth (if Wifi is initialized first, driver does not handle regulators yet) - LED - uSD - USB - RTC - Touchscreen Add human-readable comments for devices without mainlined driver and binding. Such comments can e.g. be help to find testers if someone starts to work on the missing drivers. Signed-off-by: Andreas Kemnade <andreas@kemnade.info> --- arch/arm/boot/dts/nxp/imx/Makefile | 2 + .../dts/nxp/imx/imx6sll-kobo-clara2e-a.dts | 23 + .../dts/nxp/imx/imx6sll-kobo-clara2e-b.dts | 23 + .../nxp/imx/imx6sll-kobo-clara2e-common.dtsi | 514 ++++++++++++++++++ 4 files changed, 562 insertions(+) create mode 100644 arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-a.dts create mode 100644 arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-b.dts create mode 100644 arch/arm/boot/dts/nxp/imx/imx6sll-kobo-clara2e-common.dtsi