mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 20:46:50 +07:00
f08f58a2bf
Contrary to other RPi devices, RPi3 uses uart0 to communicate with
the BCM43438 bluetooth controller. uart1 is then used for the console.
Today, the console configuration is inherited from the bcm283x dtsi
(bootargs) which is not the correct one for the RPi3. This leads to
routing issue and confuses the Bluetooth controller with unexpected
data.
This patch introduces chosen/stdout path to configure console to uart0
on bcm283x family and overwrite it to uart1 in the RPi3 dts.
Create serial0/1 aliases referring to uart0 and uart1 paths.
Remove unneeded earlyprintk.
Fixes: 4188ea2aeb ("ARM: bcm283x: Define UART pinmuxing on board level")
Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
137 lines
2.6 KiB
Plaintext
137 lines
2.6 KiB
Plaintext
/*
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* Copyright (C) 2017 Stefan Wahren <stefan.wahren@i2se.com>
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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/dts-v1/;
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#include "bcm2835.dtsi"
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#include "bcm2835-rpi.dtsi"
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#include "bcm283x-rpi-usb-host.dtsi"
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/ {
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compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
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model = "Raspberry Pi Zero W";
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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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leds {
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act {
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gpios = <&gpio 47 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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pinctrl-names = "default";
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pinctrl-0 = <&wl_on>;
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reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
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};
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};
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&gpio {
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/*
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* This is based on the official GPU firmware DT blob.
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*
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* Legend:
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* "NC" = not connected (no rail from the SoC)
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* "FOO" = GPIO line named "FOO" on the schematic
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* "FOO_N" = GPIO line named "FOO" on schematic, active low
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*/
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gpio-line-names = "GPIO0",
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"GPIO1",
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"SDA1",
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"SCL1",
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"GPIO_GCLK",
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"GPIO5",
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"GPIO6",
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"SPI_CE1_N",
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"SPI_CE0_N",
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"SPI_MISO",
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"SPI_MOSI",
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"SPI_SCLK",
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"GPIO12",
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"GPIO13",
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/* Serial port */
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"TXD0",
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"RXD0",
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"GPIO16",
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"GPIO17",
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"GPIO18",
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"GPIO19",
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"GPIO20",
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"GPIO21",
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"GPIO22",
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"GPIO23",
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"GPIO24",
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"GPIO25",
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"GPIO26",
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"GPIO27",
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"SDA0",
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"SCL0",
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"NC", /* GPIO30 */
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"NC", /* GPIO31 */
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"NC", /* GPIO32 */
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"NC", /* GPIO33 */
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"NC", /* GPIO34 */
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"NC", /* GPIO35 */
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"NC", /* GPIO36 */
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"NC", /* GPIO37 */
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"NC", /* GPIO38 */
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"NC", /* GPIO39 */
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"CAM_GPIO1", /* GPIO40 */
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"WL_ON", /* GPIO41 */
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"NC", /* GPIO42 */
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"WIFI_CLK", /* GPIO43 */
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"CAM_GPIO0", /* GPIO44 */
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"BT_ON", /* GPIO45 */
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"HDMI_HPD_N",
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"STATUS_LED_N",
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/* Used by SD Card */
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"SD_CLK_R",
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"SD_CMD_R",
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"SD_DATA0_R",
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"SD_DATA1_R",
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"SD_DATA2_R",
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"SD_DATA3_R";
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pinctrl-0 = <&gpioout &alt0>;
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wl_on: wl-on {
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brcm,pins = <41>;
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brcm,function = <BCM2835_FSEL_GPIO_OUT>;
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};
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};
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&hdmi {
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hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
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};
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&sdhci {
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#address-cells = <1>;
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#size-cells = <0>;
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pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
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mmc-pwrseq = <&wifi_pwrseq>;
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non-removable;
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status = "okay";
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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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&uart0 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};
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