Files
linux/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts
Cristian Birsan 4d9e5965df ARM: dts: microchip: sama5d27_wlsom1_ek: Add no-1-8-v property to sdmmc0 node
Add no-1-8-v property to sdmmc0 node to keep VDDSDMMC power rail at 3.3V.
This property will stop the LDO regulator from switching to 1.8V when the
MMC core detects an UHS SD Card. VDDSDMMC power rail is used by all the
SDMMC interface pins in GPIO mode (PA0 - PA13).

On this board, PA10 is used as GPIO to enable the power switch controlling
USB Vbus for the USB Host. The change is needed to fix the PA10 voltage
level to 3.3V instead of 1.8V.

Fixes: 5d4c3cfb63 ("ARM: dts: at91: sama5d27_wlsom1: add SAMA5D27 wlsom1 and wlsom1-ek")
Suggested-by: Mihai Sain <mihai.sain@microchip.com>
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Tested-by: Andrei Simion <andrei.simion@microchip.com>
Link: https://lore.kernel.org/r/20241119160107.598411-3-cristian.birsan@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
2025-01-02 12:33:56 +02:00

270 lines
4.8 KiB
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* at91-sama5d27_wlsom1_ek.dts - Device Tree file for SAMA5D27 WLSOM1 EK
*
* Copyright (C) 2019 Microchip Technology Inc. and its subsidiaries
*
* Author: Nicolas Ferre <nicolas.ferre@microcihp.com>
*/
/dts-v1/;
#include "at91-sama5d27_wlsom1.dtsi"
#include <dt-bindings/input/input.h>
/ {
model = "Microchip SAMA5D27 WLSOM1 EK";
compatible = "microchip,sama5d27-wlsom1-ek", "microchip,sama5d27-wlsom1", "atmel,sama5d27", "atmel,sama5d2", "atmel,sama5";
aliases {
serial0 = &uart0; /* DBGU */
serial1 = &uart6; /* BT */
serial2 = &uart5; /* mikro BUS 2 */
serial3 = &uart3; /* mikro BUS 1 */
i2c1 = &i2c1;
};
chosen {
stdout-path = "serial0:115200n8";
};
gpio-keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_key_gpio_default>;
button-1 {
label = "USER BUTTON";
gpios = <&pioA PIN_PB2 GPIO_ACTIVE_LOW>;
linux,code = <KEY_PROG1>;
wakeup-source;
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_led_gpio_default>;
status = "okay";
led-red {
label = "red";
gpios = <&pioA PIN_PA6 GPIO_ACTIVE_HIGH>;
};
led-green {
label = "green";
gpios = <&pioA PIN_PA7 GPIO_ACTIVE_HIGH>;
};
led-blue {
label = "blue";
gpios = <&pioA PIN_PA8 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
};
};
};
&adc {
vddana-supply = <&vdd_3v3>;
vref-supply = <&vdd_3v3>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_adc_default>;
status = "okay";
};
&flx0 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
status = "okay";
uart5: serial@200 {
pinctrl-0 = <&pinctrl_flx0_default>;
pinctrl-names = "default";
atmel,use-dma-rx;
atmel,use-dma-tx;
status = "okay";
};
};
&flx1 {
status = "okay";
uart6: serial@200 {
atmel,use-dma-rx;
atmel,use-dma-tx;
status = "okay";
};
};
&macb0 {
status = "okay";
};
&pioA {
/*
* There is no real pinmux for ADC, if the pin
* is not requested by another peripheral then
* the muxing is done when channel is enabled.
* Requesting pins for ADC is GPIO is
* encouraged to prevent conflicts and to
* disable bias in order to be in the same
* state when the pin is not muxed to the adc.
*/
pinctrl_adc_default: adc_default {
pinmux = <PIN_PD25__GPIO>,
<PIN_PD26__GPIO>;
bias-disable;
};
pinctrl_flx0_default: flx0_usart_default {
pinmux = <PIN_PB28__FLEXCOM0_IO0>,
<PIN_PB29__FLEXCOM0_IO1>;
bias-disable;
};
pinctrl_key_gpio_default: key_gpio_default {
pinmux = <PIN_PB2__GPIO>;
bias-pull-up;
};
pinctrl_led_gpio_default: led_gpio_default {
pinmux = <PIN_PA6__GPIO>,
<PIN_PA7__GPIO>,
<PIN_PA8__GPIO>;
bias-pull-down;
};
pinctrl_sdmmc0_default: sdmmc0_default {
cmd_data {
pinmux = <PIN_PA1__SDMMC0_CMD>,
<PIN_PA2__SDMMC0_DAT0>,
<PIN_PA3__SDMMC0_DAT1>,
<PIN_PA4__SDMMC0_DAT2>,
<PIN_PA5__SDMMC0_DAT3>;
bias-disable;
};
ck_cd_vddsel {
pinmux = <PIN_PA0__SDMMC0_CK>,
<PIN_PA11__SDMMC0_VDDSEL>,
<PIN_PA12__SDMMC0_WP>,
<PIN_PA13__SDMMC0_CD>;
bias-disable;
};
};
pinctrl_uart0_default: uart0_default {
pinmux = <PIN_PB26__URXD0>,
<PIN_PB27__UTXD0>;
bias-disable;
};
pinctrl_uart3_default: uart3_default {
pinmux = <PIN_PB11__URXD3>,
<PIN_PB12__UTXD3>;
bias-disable;
};
pinctrl_pwm0_default: pwm0_default {
pinmux = <PIN_PA31__PWML0>,
<PIN_PA30__PWMH0>;
bias-disable;
};
pinctrl_usb_default: usb_default {
pinmux = <PIN_PA10__GPIO>;
bias-disable;
};
pinctrl_usba_vbus: usba_vbus {
pinmux = <PIN_PA16__GPIO>;
bias-disable;
};
};
&pwm0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm0_default>;
status = "okay";
};
&qspi1 {
status = "okay";
qspi1_flash: flash@0 {
status = "okay";
};
};
&sdmmc0 {
bus-width = <4>;
no-1-8-v;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc0_default>;
status = "okay";
};
&shutdown_controller {
debounce-delay-us = <976>;
atmel,wakeup-rtc-timer;
input@0 {
reg = <0>;
};
};
&tcb0 {
timer0: timer@0 {
compatible = "atmel,tcb-timer";
reg = <0>;
};
timer1: timer@1 {
compatible = "atmel,tcb-timer";
reg = <1>;
};
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart0_default>;
atmel,use-dma-rx;
atmel,use-dma-tx;
status = "okay";
};
&uart3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart3_default>;
atmel,use-dma-rx;
atmel,use-dma-tx;
status = "okay";
};
&usb0 {
atmel,vbus-gpio = <&pioA PIN_PA16 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usba_vbus>;
status = "okay";
};
&usb1 {
num-ports = <3>;
atmel,vbus-gpio = <0
&pioA PIN_PA10 GPIO_ACTIVE_HIGH
0
>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usb_default>;
status = "okay";
};
&usb2 {
phy_type = "hsic";
status = "okay";
};
&watchdog {
status = "okay";
};