On Mon, 1 Apr 2024, Jun Ebihara wrote:
RPI0-2w: copy dtb from -current cp dtb/bcm2837-rpi-3-b-plus.dtb dtb/bcm2710-rpi-zero-2-w.dtb
I wrote a dts for the rpi0-2w, comparing the dts used in the latest
linux to see the different GPIOS used by this board and the rpi3.
I understand that updating all the dts to a new version is a major
effort, so you can see this as "backporting". You can put it in
/usr/src/sys/arch/arm/dts and compiled it with:
cpp -P -x assembler-with-cpp -I ../../../external/gpl2/dts/dist/include/ -include bcm2837-rpi-zero-2-w.dts /dev/null | dtc -I dts -O dtb -o bcm2710-rpi-zero-2-w.dtb
Some notes about this board:
*- It's a good idea to enable uart at early boot:
$ sed -i -e "s/BOOT_UART=0/BOOT_UART=1/" bootcode.bin
*- As I've said before, you don't need to remove console=fb to get
the serial console, you'll just control the same console with both.
*- I can't make hdmi audio to work:
[ 533.1690757] audio0(vcaudio0): setting play.port=0 failed: errno=22
Which would be handy in my use case, using an hdmi->av adapter.
*- Bluetooth is not detected, I supposed it should be this:
[ 1.799021] (manufacturer 0x2d0, product 0xa9a6) at sdmmc1 function 2 not config
ured
Has someone got bluetooth working on any rpi board?
*- Using the latest firmware at
https://github.com/RPi-Distro/firmware-nonfree/tree/bookworm/debian/config/brcm80211
I can bring the wifi up, but it stops working shortly.
I don't understand how all these wifi drivers get into the netbsd
code. How many of them _really_ work?
PS. I'm not using Jun's image, just the current generic arm64.img
and sysinst custom installations.
Regards,
adr.
/usr/src/sys/arch/arm/dts/bcm2837-rpi-zero-2-w.dts
=======================================================
/dts-v1/;
#include "../../../external/gpl2/dts/dist/arch/arm/boot/dts/bcm2837.dtsi"
#include "../../../external/gpl2/dts/dist/arch/arm/boot/dts/bcm2836-rpi.dtsi"
#include "../../../external/gpl2/dts/dist/arch/arm/boot/dts/bcm283x-rpi-smsc9514.dtsi"
#include "../../../external/gpl2/dts/dist/arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi"
/ {
compatible = "raspberrypi,model-zero-2-w", "brcm,bcm2837";
model = "Raspberry Pi Zero 2 W";
chosen {
/* 8250 auxiliary UART instead of pl011 */
stdout-path = "serial1:115200n8";
};
memory@0 {
device_type = "memory";
reg = <0 0x20000000>;
};
leds {
led-act {
gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
};
};
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
};
};
&gpio {
/*
* Taken from rpi_SCH_3b_1p2_reduced.pdf and
* the official GPU firmware DT blob.
*
* Legend:
* "NC" = not connected (no rail from the SoC)
* "FOO" = GPIO line named "FOO" on the schematic
* "FOO_N" = GPIO line named "FOO" on schematic, active low
*/
gpio-line-names = "ID_SDA",
"ID_SCL",
"SDA1",
"SCL1",
"GPIO_GCLK",
"GPIO5",
"GPIO6",
"SPI_CE1_N",
"SPI_CE0_N",
"SPI_MISO",
"SPI_MOSI",
"SPI_SCLK",
"GPIO12",
"GPIO13",
/* Serial port */
"TXD0",
"RXD0",
"GPIO16",
"GPIO17",
"GPIO18",
"GPIO19",
"GPIO20",
"GPIO21",
"GPIO22",
"GPIO23",
"GPIO24",
"GPIO25",
"GPIO26",
"GPIO27",
"HDMI_HPD_N",
"STATUS_LED_N",
"NC", /* GPIO30 */
"NC", /* GPIO31 */
"NC", /* GPIO32 */
"NC", /* GPIO33 */
"NC", /* GPIO34 */
"NC", /* GPIO35 */
"NC", /* GPIO36 */
"NC", /* GPIO37 */
"NC", /* GPIO38 */
"NC", /* GPIO39 */
"CAM_GPIO0", /* GPIO40 */
"WL_ON", /* GPIO41 */
"BT_ON", /* GPIO42 */
"WIFI_CLK", /* GPIO43 */
"SDA0", /* GPIO44 */
"SCL0", /* GPIO45 */
"SMPS_SCL",
"SMPS_SDA",
/* Used by SD Card */
"SD_CLK_R",
"SD_CMD_R",
"SD_DATA0_R",
"SD_DATA1_R",
"SD_DATA2_R",
"SD_DATA3_R";
};
&hdmi {
hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
status = "okay";
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio32 &uart0_ctsrts_gpio30>;
status = "okay";
bluetooth {
compatible = "brcm,bcm43438-bt";
max-speed = <2000000>;
shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
};
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};
/* SDHCI is used to control the SDIO for wireless */
&sdhci {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
status = "okay";
bus-width = <4>;
non-removable;
mmc-pwrseq = <&wifi_pwrseq>;
brcmf: wifi@1 {
reg = <1>;
compatible = "brcm,bcm4329-fmac";
};
};
/* SDHOST is used to drive the SD card */
&sdhost {
pinctrl-names = "default";
pinctrl-0 = <&sdhost_gpio48>;
status = "okay";
bus-width = <4>;
};Attachment:
bcm2837-rpi-zero-2-w.dts
Description: audio/vnd.dts