On 10/27/25 01:52, FUKAUMI Naoki wrote:
This reverts commit 8240e87f16d17 ("arm64: dts: rockchip: fix
audio-supply for Rock Pi 4").
Fix the APIO5_VDD power supply to vcc_3v0 as per the schematics[1][2]
[3][4][5].
This fixes the SPI-NOR flash probe failure when the blue LED is on[6],
and the garbled serial console output on Linux.
The ES8316 headphone and microphone are confirmed to work correctly
after this fix.
[1] https://dl.radxa.com/rockpi4/docs/hw/rockpi4/4a/ROCK_4A_V1.52_SCH.pdf p.14
[2]
https://dl.radxa.com/rockpi4/docs/hw/rockpi4/4ap/radxa_rock_4ap_v1730_schematic.pdf
p.14
[3] https://dl.radxa.com/rockpi4/docs/hw/rockpi4/4b/ROCK_4B_v1.52_SCH.pdf p.14
[4]
https://dl.radxa.com/rockpi4/docs/hw/rockpi4/4bp/radxa_rock_4bp_v1730_schematic.pdf
p.14
[5] https://dl.radxa.com/rockpi4/docs/hw/rockpi4/ROCK-4-SE-V1.53-SCH.pdf p.14
[6]
=> led blue:status off
=> sf probe
SF: Detected w25q128 with page size 256 Bytes, erase size 4 KiB, total 16 MiB
=> led blue:status on
=> sf probe
jedec_spi_nor flash@0: unrecognized JEDEC id bytes: ff, ff, ff
Failed to initialize SPI flash at 1:0 (error -2)
Fixes: 7ebfd4f6b52a6 ("arm64: dts: rockchip: add LED for ROCK Pi 4A/B/C/A+/B+")
Fixes: 8240e87f16d17 ("arm64: dts: rockchip: fix audio-supply for Rock Pi 4")
Signed-off-by: FUKAUMI Naoki <[email protected]>
---
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
index 046dbe3290178..fda7ea87e4efc 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -516,7 +516,7 @@ &i2s2 {
};
&io_domains {
- audio-supply = <&vcca1v8_codec>;
+ audio-supply = <&vcc_3v0>;
bt656-supply = <&vcc_3v0>;
gpio1830-supply = <&vcc_3v0>;
sdmmc-supply = <&vcc_sdio>;
U-Boot uses the same device-tree as Linux. I applied the change in
U-Boot and it fixes the following problems in U-Boot for me:
* The serial console is not usable after the supply voltages are set.
* Early initialization of the video output fails.
Tested-by: Heinrich Schuchardt <[email protected]>
