The reMarkable2 (https://remarkable.com) is an e-ink tablet based on
the imx7d SoC.
This commit is based on the DTS provide by reMarkable but ported to the
latest kernel (instead of 4.14). I have removed references to
non-upstream devices and have changed the UART so that the console can
be accessed without having to open up the device via the OTG pogo pins.
Currently the kernel boots, but there is no support for the display.
WiFi is untested (no dispaly or UART RX makes it hard to test), but
should work with the current upstream driver. As it's untested it's not
included in this commit.
Signed-off-by: Alistair Francis
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/imx7d-remarkable2.dts | 166
2 files changed, 167 insertions(+)
create mode 100644 arch/arm/boot/dts/imx7d-remarkable2.dts
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 8e5d4ab4e75e..dc8e378689af 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -660,6 +660,7 @@ dtb-$(CONFIG_SOC_IMX7D) += \
imx7d-pico-hobbit.dtb \
imx7d-pico-nymph.dtb \
imx7d-pico-pi.dtb \
+ imx7d-remarkable2.dtb \
imx7d-sbc-imx7.dtb \
imx7d-sdb.dtb \
imx7d-sdb-reva.dtb \
diff --git a/arch/arm/boot/dts/imx7d-remarkable2.dts
b/arch/arm/boot/dts/imx7d-remarkable2.dts
new file mode 100644
index ..86d555bd33c2
--- /dev/null
+++ b/arch/arm/boot/dts/imx7d-remarkable2.dts
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ * Copyright (C) 2019 reMarkable AS - http://www.remarkable.com/
+ *
+ */
+
+/dts-v1/;
+
+#include "imx7d.dtsi"
+
+/ {
+ model = "reMarkable 2.0";
+ compatible = "remarkable,imx7d-remarkable2", "fsl,imx7d";
+
+ chosen {
+ stdout-path =
+ };
+
+ memory {
+ reg = <0x8000 0x4000>;
+ };
+};
+
+ {
+ assigned-clocks = < IMX7D_CLKO2_ROOT_SRC>,
+ < IMX7D_CLKO2_ROOT_DIV>;
+ assigned-clock-parents = < IMX7D_CKIL>;
+ assigned-clock-rates = <0>, <32768>;
+};
+
+ {
+ status = "disabled";
+};
+
+_apbh {
+ status = "disabled";
+};
+
+ {
+ status = "okay";
+};
+
+_pwrkey {
+ status = "okay";
+};
+
+ {
+ pinctrl-names = "default";
+ pinctrl-0 = <_uart1>;
+ assigned-clocks = < IMX7D_UART1_ROOT_SRC>;
+ assigned-clock-parents = < IMX7D_OSC_24M_CLK>;
+ status = "okay";
+};
+
+ {
+ pinctrl-names = "default";
+ pinctrl-0 = <_uart6>;
+ assigned-clocks = < IMX7D_UART6_ROOT_SRC>;
+ assigned-clock-parents = < IMX7D_OSC_24M_CLK>;
+ status = "okay";
+};
+
+ {
+ srp-disable;
+ hnp-disable;
+ status = "okay";
+};
+
+ {
+ pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
+ pinctrl-0 = <_usdhc3>;
+ pinctrl-1 = <_usdhc3_100mhz>;
+ pinctrl-2 = <_usdhc3_200mhz>;
+ pinctrl-3 = <_usdhc3>;
+ assigned-clocks = < IMX7D_USDHC3_ROOT_CLK>;
+ assigned-clock-rates = <4>;
+ bus-width = <8>;
+ non-removable;
+ status = "okay";
+};
+
+ {
+ pinctrl-names = "default";
+ pinctrl-0 = <_wdog>;
+ fsl,ext-reset-output;
+};
+
+_lpsr {
+ pinctrl_digitizer_reg: digitizerreggrp {
+ fsl,pins = <
+ /* DIGITIZER_PWR_EN */
+ MX7D_PAD_LPSR_GPIO1_IO06__GPIO1_IO6 0x14
+ >;
+ };
+};
+
+ {
+ pinctrl_uart1: uart1grp {
+ fsl,pins = <
+ MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX0x79
+ MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX0x79
+ >;
+ };
+
+ pinctrl_uart6: uart6grp {
+ fsl,pins = <
+ MX7D_PAD_EPDC_DATA09__UART6_DCE_TX 0x79
+ MX7D_PAD_EPDC_DATA08__UART6_DCE_RX 0x79
+ >;
+ };
+
+ pinctrl_usdhc3: usdhc3grp {
+ fsl,pins = <
+ MX7D_PAD_SD3_CMD__SD3_CMD 0x59
+ MX7D_PAD_SD3_CLK__SD3_CLK 0x19
+ MX7D_PAD_SD3_DATA0__SD3_DATA0 0x59
+ MX7D_PAD_SD3_DATA1__SD3_DATA1 0x59
+ MX7D_PAD_SD3_DATA2__SD3_DATA2 0x59
+ MX7D_PAD_SD3_DATA3__SD3_DATA3 0x59
+ MX7D_PAD_SD3_DATA4__SD3_DATA4 0x59
+ MX7D_PAD_SD3_DATA5__SD3_DATA5 0x59
+ MX7D_PAD_SD3_DATA6__SD3_DATA6 0x59
+ MX7D_PAD_SD3_DATA7__SD3_DATA7 0x59
+ MX7D_PAD_SD3_STROBE__SD3_STROBE 0x19
+ >;
+ };
+
+ pinctrl_usdhc3_100mhz: usdhc3grp_100mhz {
+ fsl,pins = <
+
