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Tue, 19 Jan 2021 00:41:01 -0500 (EST) From: Alistair Francis To: arnd@arndb.de, olof@lixom.net, robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com Subject: [PATCH v2 1/3] imx7d-remarkable2.dts: Initial device tree for reMarkable2 Date: Sun, 17 Jan 2021 10:02:59 -0800 Message-Id: <20210117180301.1956-1-alistair@alistair23.me> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210119_004109_970367_68C6F11A X-CRM114-Status: GOOD ( 24.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Alistair Francis , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alistair23@gmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 dispaly, WiFi or the power controller chips. Signed-off-by: Alistair Francis --- v2: - No change to this patch, use the existing defconfig arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/imx7d-remarkable2.dts | 375 ++++++++++++++++++++++++ 2 files changed, 376 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 3d1ea0b25168..5fca2612ef58 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -664,6 +664,7 @@ dtb-$(CONFIG_SOC_IMX7D) += \ imx7d-sdb-sht11.dtb \ imx7d-zii-rmu2.dtb \ imx7d-zii-rpu2.dtb \ + imx7d-remarkable2.dtb \ imx7s-colibri-aster.dtb \ imx7s-colibri-eval-v3.dtb \ imx7s-mba7.dtb \ diff --git a/arch/arm/boot/dts/imx7d-remarkable2.dts b/arch/arm/boot/dts/imx7d-remarkable2.dts new file mode 100644 index 000000000000..fba55a0e028a --- /dev/null +++ b/arch/arm/boot/dts/imx7d-remarkable2.dts @@ -0,0 +1,375 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (C) 2015 Freescale Semiconductor, Inc. + * Copyright (C) 2019 reMarkable AS - http://www.remarkable.com/ + * + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +/dts-v1/; + +#include "imx7d.dtsi" + +/ { + model = "reMarkable 2.0"; + compatible = "fsl,imx7d-sdb", "fsl,imx7d"; + + chosen { + stdout-path = &uart6; + }; + + memory { + reg = <0x80000000 0x40000000>; + }; + + reg_vref_1v8: regulator-vref-1v8 { + compatible = "regulator-fixed"; + regulator-name = "vref-1v8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_brcm: regulator-brcm { + compatible = "regulator-fixed"; + regulator-name = "brcm_reg"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_brcm_reg>; + pinctrl-1 = <&pinctrl_brcm_reg>; + gpio = <&gpio6 13 GPIO_ACTIVE_HIGH>; + enable-active-high; + startup-delay-us = <150>; + }; + + reg_digitizer: regulator-digitizer { + compatible = "regulator-fixed"; + regulator-name = "VDD_3V3_DIGITIZER"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_digitizer_reg>; + pinctrl-1 = <&pinctrl_digitizer_reg>; + gpio = <&gpio1 6 GPIO_ACTIVE_HIGH>; + enable-active-high; + startup-delay-us = <100000>; /* 100 ms */ + }; + + reg_touch: regulator-touch { + compatible = "regulator-fixed"; + regulator-name = "VDD_3V3_TOUCH"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_touch_reg>; + pinctrl-1 = <&pinctrl_touch_reg>; + gpio = <&gpio1 11 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + + reg_sdoe: regulator-sdoe { + compatible = "regulator-fixed"; + regulator-name = "SDOE"; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_sdoe_reg>; + pinctrl-1 = <&pinctrl_sdoe_reg>; + gpio = <&gpio3 27 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + + reg_gdoe: regulator-gdoe { + compatible = "regulator-fixed"; + regulator-name = "GDOE"; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_gdoe_reg>; + pinctrl-1 = <&pinctrl_gdoe_reg>; + gpio = <&gpio3 21 GPIO_ACTIVE_HIGH>; + enable-active-high; + regulator-always-on; + }; + + wifi_pwrseq: wifi_pwrseq { + compatible = "mmc-pwrseq-simple"; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_wifi>; + pinctrl-1 = <&pinctrl_wifi>; + reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>; + clocks = <&clks IMX7D_CLKO2_ROOT_DIV>; + clock-names = "ext_clock"; + }; +}; + +&clks { + assigned-clocks = <&clks IMX7D_CLKO2_ROOT_SRC>, + <&clks IMX7D_CLKO2_ROOT_DIV>; + assigned-clock-parents = <&clks IMX7D_CKIL>; + assigned-clock-rates = <0>, <32768>; +}; + +&crypto { + status = "disabled"; +}; + +&dma_apbh { + status = "disabled"; +}; + +&sdma { + status = "okay"; +}; + +&uart1 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_uart1>; + pinctrl-1 = <&pinctrl_uart1>; + assigned-clocks = <&clks IMX7D_UART1_ROOT_SRC>; + assigned-clock-parents = <&clks IMX7D_OSC_24M_CLK>; + status = "okay"; +}; + +&uart6 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_uart6>; + assigned-clocks = <&clks IMX7D_UART6_ROOT_SRC>; + assigned-clock-parents = <&clks IMX7D_OSC_24M_CLK>; + status = "okay"; +}; + +&usbotg2 { + srp-disable; + hnp-disable; + asp-disable; + phy-charger-detection; + status = "okay"; +}; + +&usdhc2 { + #address-cells = <1>; + #size-cells = <0>; + pinctrl-names = "default", "state_100mhz", "sleep"; + pinctrl-0 = <&pinctrl_usdhc2>; + pinctrl-1 = <&pinctrl_usdhc2_100mhz>; + pinctrl-2 = <&pinctrl_usdhc2>; + mmc-pwrseq = <&wifi_pwrseq>; + vmmc-supply = <®_brcm>; + bus-width = <4>; + non-removable; + keep-power-in-suspend; + cap-power-off-card; + status = "okay"; + + brcmf: bcrmf@1 { + reg = <1>; + compatible = "brcm,bcm4329-fmac"; + }; +}; + +&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>; + assigned-clocks = <&clks IMX7D_USDHC3_ROOT_CLK>; + assigned-clock-rates = <400000000>; + bus-width = <8>; + non-removable; + status = "okay"; +}; + +&wdog1 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_wdog>; + pinctrl-1 = <&pinctrl_wdog>; + fsl,ext-reset-output; +}; + +&iomuxc_lpsr { + pinctrl_digitizer_reg: digitizerreggrp { + fsl,pins = < + /* DIGITIZER_PWR_EN */ + MX7D_PAD_LPSR_GPIO1_IO06__GPIO1_IO6 0x14 + >; + }; +}; + +&iomuxc { + pinctrl_bd71815: bd71815grp { + fsl,pins = < + MX7D_PAD_SAI1_RX_SYNC__GPIO6_IO16 0x59 + >; + }; + + pinctrl_uart1: uart1grp { + fsl,pins = < + MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX 0x79 + MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX 0x79 + >; + }; + + pinctrl_uart6: uart6grp { + fsl,pins = < + MX7D_PAD_EPDC_DATA09__UART6_DCE_TX 0x79 + MX7D_PAD_EPDC_DATA08__UART6_DCE_RX 0x79 + >; + }; + + pinctrl_usdhc2: usdhc2grp { + fsl,pins = < + MX7D_PAD_SD2_CMD__SD2_CMD 0x59 + MX7D_PAD_SD2_CLK__SD2_CLK 0x19 + MX7D_PAD_SD2_DATA0__SD2_DATA0 0x59 + MX7D_PAD_SD2_DATA1__SD2_DATA1 0x59 + MX7D_PAD_SD2_DATA2__SD2_DATA2 0x59 + MX7D_PAD_SD2_DATA3__SD2_DATA3 0x59 + >; + }; + + pinctrl_usdhc2_100mhz: usdhc2grp_100mhz { + fsl,pins = < + MX7D_PAD_SD2_CMD__SD2_CMD 0x5a + MX7D_PAD_SD2_CLK__SD2_CLK 0x1a + MX7D_PAD_SD2_DATA0__SD2_DATA0 0x5a + MX7D_PAD_SD2_DATA1__SD2_DATA1 0x5a + MX7D_PAD_SD2_DATA2__SD2_DATA2 0x5a + MX7D_PAD_SD2_DATA3__SD2_DATA3 0x5a + >; + }; + + pinctrl_usdhc2_200mhz: usdhc2grp_200mhz { + fsl,pins = < + MX7D_PAD_SD2_CMD__SD2_CMD 0x5b + MX7D_PAD_SD2_CLK__SD2_CLK 0x1b + MX7D_PAD_SD2_DATA0__SD2_DATA0 0x5b + MX7D_PAD_SD2_DATA1__SD2_DATA1 0x5b + MX7D_PAD_SD2_DATA2__SD2_DATA2 0x5b + MX7D_PAD_SD2_DATA3__SD2_DATA3 0x5b + >; + }; + + + 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 = < + MX7D_PAD_SD3_CMD__SD3_CMD 0x5a + MX7D_PAD_SD3_CLK__SD3_CLK 0x1a + MX7D_PAD_SD3_DATA0__SD3_DATA0 0x5a + MX7D_PAD_SD3_DATA1__SD3_DATA1 0x5a + MX7D_PAD_SD3_DATA2__SD3_DATA2 0x5a + MX7D_PAD_SD3_DATA3__SD3_DATA3 0x5a + MX7D_PAD_SD3_DATA4__SD3_DATA4 0x5a + MX7D_PAD_SD3_DATA5__SD3_DATA5 0x5a + MX7D_PAD_SD3_DATA6__SD3_DATA6 0x5a + MX7D_PAD_SD3_DATA7__SD3_DATA7 0x5a + MX7D_PAD_SD3_STROBE__SD3_STROBE 0x1a + >; + }; + + pinctrl_usdhc3_200mhz: usdhc3grp_200mhz { + fsl,pins = < + MX7D_PAD_SD3_CMD__SD3_CMD 0x5b + MX7D_PAD_SD3_CLK__SD3_CLK 0x1b + MX7D_PAD_SD3_DATA0__SD3_DATA0 0x5b + MX7D_PAD_SD3_DATA1__SD3_DATA1 0x5b + MX7D_PAD_SD3_DATA2__SD3_DATA2 0x5b + MX7D_PAD_SD3_DATA3__SD3_DATA3 0x5b + MX7D_PAD_SD3_DATA4__SD3_DATA4 0x5b + MX7D_PAD_SD3_DATA5__SD3_DATA5 0x5b + MX7D_PAD_SD3_DATA6__SD3_DATA6 0x5b + MX7D_PAD_SD3_DATA7__SD3_DATA7 0x5b + MX7D_PAD_SD3_STROBE__SD3_STROBE 0x1b + >; + }; + + pinctrl_brcm_reg: brcmreggrp { + fsl,pins = < + /* WIFI_PWR_EN */ + MX7D_PAD_SAI1_TX_BCLK__GPIO6_IO13 0x14 + >; + }; + + pinctrl_wifi: wifigrp { + fsl,pins = < + /* WiFi Reg On */ + MX7D_PAD_SD2_CD_B__GPIO5_IO9 0x00000014 + /* WiFi Sleep 32k */ + MX7D_PAD_SD1_WP__CCM_CLKO2 0x00000014 + >; + }; + + pinctrl_wdog: wdoggrp { + fsl,pins = < + MX7D_PAD_ENET1_COL__WDOG1_WDOG_ANY 0x74 + >; + }; + + pinctrl_touch_reg: touchreggrp { + fsl,pins = < + /* TOUCH_PWR_EN */ + MX7D_PAD_GPIO1_IO11__GPIO1_IO11 0x14 + >; + }; + + pinctrl_sdoe_reg: sdoereggrp { + fsl,pins = < + MX7D_PAD_LCD_DATA22__GPIO3_IO27 0x74 + >; + }; + + pinctrl_gdoe_reg: gdoereggrp { + fsl,pins = < + MX7D_PAD_LCD_DATA16__GPIO3_IO21 0x74 + >; + }; +};