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The commitb1b8f45b31("ARM: dts: bcm2837: Add missing GPIOs of Expander") introduced a wifi power sequence. Unfortunately the polarity of the reset GPIOs were wrong and broke the wifi support on Raspberry Pi 3 B and later in 3 B+. This wasn't discovered before since the power sequence takes only effect in case the relevant MMC driver is compiled as a module. Fixes:b1b8f45b31("ARM: dts: bcm2837: Add missing GPIOs of Expander") Cc: stable@vger.kernel.org Reported-by: Matthias Lueschner <lueschem@gmail.com> Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911443 Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
104 lines
1.9 KiB
Plaintext
104 lines
1.9 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/dts-v1/;
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#include "bcm2837.dtsi"
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#include "bcm2835-rpi.dtsi"
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#include "bcm283x-rpi-smsc9514.dtsi"
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#include "bcm283x-rpi-usb-host.dtsi"
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/ {
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compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
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model = "Raspberry Pi 3 Model B";
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chosen {
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/* 8250 auxiliary UART instead of pl011 */
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stdout-path = "serial1:115200n8";
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};
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memory {
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reg = <0 0x40000000>;
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};
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leds {
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act {
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gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
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};
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};
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wifi_pwrseq: wifi-pwrseq {
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compatible = "mmc-pwrseq-simple";
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reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
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};
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};
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&firmware {
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expgpio: gpio {
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compatible = "raspberrypi,firmware-gpio";
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gpio-controller;
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#gpio-cells = <2>;
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gpio-line-names = "BT_ON",
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"WL_ON",
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"STATUS_LED",
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"LAN_RUN",
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"HPD_N",
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"CAM_GPIO0",
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"CAM_GPIO1",
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"PWR_LOW_N";
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status = "okay";
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};
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};
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&pwm {
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pinctrl-names = "default";
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pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
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status = "okay";
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};
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&hdmi {
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hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
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};
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/* uart0 communicates with the BT module */
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&uart0 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
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status = "okay";
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bluetooth {
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compatible = "brcm,bcm43438-bt";
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max-speed = <2000000>;
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shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
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};
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};
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/* uart1 is mapped to the pin header */
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&uart1 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart1_gpio14>;
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status = "okay";
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};
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/* SDHCI is used to control the SDIO for wireless */
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&sdhci {
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#address-cells = <1>;
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#size-cells = <0>;
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pinctrl-names = "default";
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pinctrl-0 = <&emmc_gpio34>;
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status = "okay";
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bus-width = <4>;
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non-removable;
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mmc-pwrseq = <&wifi_pwrseq>;
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brcmf: wifi@1 {
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reg = <1>;
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compatible = "brcm,bcm4329-fmac";
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};
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};
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/* SDHOST is used to drive the SD card */
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&sdhost {
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pinctrl-names = "default";
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pinctrl-0 = <&sdhost_gpio48>;
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status = "okay";
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bus-width = <4>;
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};
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