Open myamoroso opened 1 year ago
which controller is the SPI display using?
spi : st7789v / ili9341 i2c: gt911
@myamoroso , for SPI display with ILI9341 controller, you can hookup with the SPI2 bus on the ROCK Pi S, pinouts here - RADXA For Linux, Linux has native support for ILI9341 with DTS support - docs here
DTS modifications
&spi2 {
status = "okay";
display9341@0{
compatible = "ilitek,ili9341";
reg = <0>;
spi-max-frequency = <32000000>;
rotate = <0>;
bgr;
fps = <50>;
buswidth = <8>;
reset-gpios = <&gpio 17 0>;
dc-gpios = <&gpio 16 0>;
led-gpios = <&gpio 15 1>;
debug = <0>;
};
};
@jayanta525
Thanks for your reply. Unforturnatlly, i didn't get the /dev/fb0 device, and get the log:
[ 0.239304] SPI driver fb_ili9341 has no spi_device_id for ilitek,ili9341
Following is repro steps:
1) Add the &spi2{} node to the bottom of the following dtsi and dts files:
./rk3308-rock-pi-s/build_dir/host/u-boot-2023.04/arch/arm/dts/rk3308-u-boot.dtsi ./rk3308-rock-pi-s/build_dir/target-aarch64_generic_musl/u-boot-2023.07.02/arch/arm/dts/rk3308-u-boot.dtsi ./rk3308-rock-pi-s/build_dir/target-aarch64_generic_musl/u-boot-rock-pi-s-rk3308/u-boot-2023.10-rc2/arch/arm/dts/rk3308-u-boot.dtsi
./rk3308-rock-pi-s/build_dir/host/u-boot-2023.04/arch/arm/dts/rk3308-rock-pi-s.dts ./rk3308-rock-pi-s/build_dir/toolchain-aarch64_generic_gcc-12.3.0_musl/linux-6.1.46/arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts ./rk3308-rock-pi-s/build_dir/target-aarch64_generic_musl/u-boot-2023.07.02/arch/arm/dts/rk3308-rock-pi-s.dts ./rk3308-rock-pi-s/build_dir/target-aarch64_generic_musl/linux-rockchip_armv8/linux-6.1.46/arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts ./rk3308-rock-pi-s/build_dir/target-aarch64_generic_musl/u-boot-rock-pi-s-rk3308/u-boot-2023.10-rc2/arch/arm/dts/rk3308-rock-pi-s.dts
2) Apply pins the board: According SPI2(RADXA) and &spi2{} node, link the lcd pins to the board.
3) enable the "FB_TFT_ILI9341" in the kernel menuconfig
where is missing or lost?
@myamoroso, add only
&spi2 {
status = "okay";
};
in uboot. (rk3308-rock-pi-s.dts)
and full node on (linux....rk3308-rock-pi-s.dts)
@myamoroso
try with a lower spi speed -
&spi2 {
status = "okay";
max-freq = <48000000>;
display9341@0{
compatible = "ilitek,ili9341";
status = "okay";
reg = <0>;
spi-max-frequency = <15000000>;
rotate = <0>;
bgr;
fps = <30>;
buswidth = <8>;
reset-gpios = <&gpio 17 0>;
dc-gpios = <&gpio 16 0>;
led-gpios = <&gpio 15 1>;
debug = <0>;
};
};
Describe the bug
how to update device tree to support spi lcd and i2c touch ? which pins to link?
thanks !!!
OpenWrt version
r14622-7da6ae78b3
OpenWrt target/subtarget
rockchip/armv8
Device
Radxa ROCK Pi S
Image kind
Self-built image
Steps to reproduce
No response
Actual behaviour
No response
Expected behaviour
No response
Additional info
No response
Diffconfig
No response
Terms