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f8f4f44277
The UART controller does not seem to be fast enough to receive data (at 115200 baud) without dropping bytes when DMA is disabled. This has often been noticed when pasting SSH keys into the serial console (ttyS0). Only after multiple tries, the long strings would be successfully transferred without missing characters. Co-developed-by: Michael Zimmermann <michael.zimmermann@grandcentrix.net> Signed-off-by: Michael Zimmermann <michael.zimmermann@grandcentrix.net> Signed-off-by: Ezra Buehler <ezra.buehler@husqvarnagroup.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Link: https://lore.kernel.org/r/20240102161839.702625-2-ezra.buehler@husqvarna.com [claudiu.beznea: s/Co-Developed-by/Co-developed-by to make checkpatch.pl happy, s/at91/microchip in commit title] Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
169 lines
3.1 KiB
Text
169 lines
3.1 KiB
Text
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* at91sam9x5ek.dtsi - Device Tree file for AT91SAM9x5CM Base board
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*
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* Copyright (C) 2012 Atmel,
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* 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
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*/
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#include "at91sam9x5cm.dtsi"
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/ {
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model = "Atmel AT91SAM9X5-EK";
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compatible = "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
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chosen {
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bootargs = "root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs";
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stdout-path = "serial0:115200n8";
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};
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sound {
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compatible = "atmel,sam9x5-wm8731-audio";
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atmel,model = "wm8731 @ AT91SAM9X5EK";
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atmel,audio-routing =
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"Headphone Jack", "RHPOUT",
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"Headphone Jack", "LHPOUT",
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"LLINEIN", "Line In Jack",
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"RLINEIN", "Line In Jack";
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atmel,ssc-controller = <&ssc0>;
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atmel,audio-codec = <&wm8731>;
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};
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};
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&adc0 {
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atmel,adc-ts-wires = <4>;
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atmel,adc-ts-pressure-threshold = <10000>;
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status = "okay";
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};
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&dbgu {
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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status = "okay";
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};
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&i2c0 {
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status = "okay";
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wm8731: wm8731@1a {
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compatible = "wm8731";
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reg = <0x1a>;
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};
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};
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&mmc0 {
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pinctrl-0 = <
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&pinctrl_board_mmc0
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&pinctrl_mmc0_slot0_clk_cmd_dat0
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&pinctrl_mmc0_slot0_dat1_3>;
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pinctrl-names = "default";
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status = "okay";
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slot@0 {
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reg = <0>;
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bus-width = <4>;
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cd-gpios = <&pioD 15 GPIO_ACTIVE_HIGH>;
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};
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};
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&mmc1 {
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pinctrl-0 = <
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&pinctrl_board_mmc1
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&pinctrl_mmc1_slot0_clk_cmd_dat0
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&pinctrl_mmc1_slot0_dat1_3>;
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pinctrl-names = "default";
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status = "okay";
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slot@0 {
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reg = <0>;
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bus-width = <4>;
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cd-gpios = <&pioD 14 GPIO_ACTIVE_HIGH>;
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};
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};
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&pinctrl {
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camera_sensor {
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pinctrl_pck0_as_isi_mck: pck0_as_isi_mck-0 {
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atmel,pins =
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<AT91_PIOC 15 AT91_PERIPH_C AT91_PINCTRL_NONE>; /* ISI_MCK */
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};
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pinctrl_sensor_power: sensor_power-0 {
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atmel,pins =
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<AT91_PIOA 13 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
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};
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pinctrl_sensor_reset: sensor_reset-0 {
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atmel,pins =
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<AT91_PIOA 7 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
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};
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};
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mmc0 {
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pinctrl_board_mmc0: mmc0-board {
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atmel,pins =
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<AT91_PIOD 15 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>; /* PD15 gpio CD pin pull up and deglitch */
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};
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};
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mmc1 {
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pinctrl_board_mmc1: mmc1-board {
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atmel,pins =
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<AT91_PIOD 14 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>; /* PD14 gpio CD pin pull up and deglitch */
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};
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};
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usb2 {
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pinctrl_board_usb2: usb2-board {
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atmel,pins =
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<AT91_PIOB 16 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>; /* PB16 gpio vbus sense, deglitch */
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};
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};
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};
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&spi0 {
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cs-gpios = <&pioA 14 0>, <0>, <0>, <0>;
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status = "disabled"; /* conflicts with mmc1 */
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flash@0 {
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compatible = "atmel,at25df321a";
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spi-max-frequency = <50000000>;
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reg = <0>;
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};
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};
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&ssc0 {
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status = "okay";
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};
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&usart0 {
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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status = "okay";
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};
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&usb0 {
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num-ports = <3>;
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atmel,vbus-gpio = <0 /* &pioD 18 GPIO_ACTIVE_LOW *//* Activate to have access to port A */
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&pioD 19 GPIO_ACTIVE_LOW
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&pioD 20 GPIO_ACTIVE_LOW
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>;
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status = "okay";
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};
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&usb1 {
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status = "okay";
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};
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&usb2 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_board_usb2>;
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atmel,vbus-gpio = <&pioB 16 GPIO_ACTIVE_HIGH>;
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status = "okay";
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};
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&watchdog {
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status = "okay";
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};
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