On Wed, Mar 3, 2021 at 8:44 AM Shawn Guo <shawn...@kernel.org> wrote: > > On Wed, Feb 03, 2021 at 07:03:14PM -0800, Alistair Francis wrote: > > 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. > > Just out of curiosity, this is a DIY cable or something generally > available from vendor?
It's a DIY cable, it's a bit of a pain to put together. You can see what it looks like here: https://github.com/ddvk/remarkable2-recovery > > > > > Currently the kernel boots, but there is no support for the dispaly, > > WiFi or the power controller chips. > > There are still some WiFi related devices. Can we drop all those > untested stuff? I have WiFi working on the 5.4 NXP branch. I was actually thinking that WiFi should just work if the rootFS and FW all match. The main problem is that the kernel expects a firmware version that isn't in linux-firmware. I have removed it for now though. > > > > > Signed-off-by: Alistair Francis <alist...@alistair23.me> > > --- > > arch/arm/boot/dts/Makefile | 1 + > > arch/arm/boot/dts/imx7d-remarkable2.dts | 253 ++++++++++++++++++++++++ > > 2 files changed, 254 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..9608c363b25f 100644 > > --- a/arch/arm/boot/dts/Makefile > > +++ b/arch/arm/boot/dts/Makefile > > @@ -658,6 +658,7 @@ 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 000000000000..0aae13f5eed6 > > --- /dev/null > > +++ b/arch/arm/boot/dts/imx7d-remarkable2.dts > > @@ -0,0 +1,253 @@ > > +// 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 = "fsl,imx7d-remarkable2", "fsl,imx7d"; > > The new compatible needs to be documented. Also the compatible doesn't > look right, as this is a device from reMarkable rather than FSL. Done and done. Alistair > > Shawn > > > + > > + chosen { > > + stdout-path = &uart6; > > + }; > > + > > + memory { > > + reg = <0x80000000 0x40000000>; > > + }; > > + > > + reg_brcm: regulator-brcm { > > + compatible = "regulator-fixed"; > > + regulator-name = "brcm_reg"; > > + regulator-min-microvolt = <3300000>; > > + regulator-max-microvolt = <3300000>; > > + pinctrl-names = "default"; > > + pinctrl-0 = <&pinctrl_brcm_reg>; > > + gpio = <&gpio6 13 GPIO_ACTIVE_HIGH>; > > + enable-active-high; > > + startup-delay-us = <150>; > > + }; > > + > > + wifi_pwrseq: wifi_pwrseq { > > + compatible = "mmc-pwrseq-simple"; > > + pinctrl-names = "default"; > > + pinctrl-0 = <&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"; > > + pinctrl-0 = <&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; > > + 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"; > > + pinctrl-0 = <&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_brcm_reg: brcmreggrp { > > + fsl,pins = < > > + /* WIFI_PWR_EN */ > > + MX7D_PAD_SAI1_TX_BCLK__GPIO6_IO13 0x14 > > + >; > > + }; > > + > > + 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_wdog: wdoggrp { > > + fsl,pins = < > > + MX7D_PAD_ENET1_COL__WDOG1_WDOG_ANY 0x74 > > + >; > > + }; > > + > > + 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 > > + >; > > + }; > > +}; > > -- > > 2.30.0 > >
