Re: [PATCH 3/4] arm64: dts: rockchip: enable wifi on ArmSoM Sige5

On Thu, Jun 5, 2025 at 10:32 AM Alexey Charkov [off-list ref] wrote:

On Thu, Jun 5, 2025 at 6:43 AM Jimmy Hon [off-list ref] wrote:

quoted

quoted

+&sdio {
+       bus-width = <4>;
+       cap-sdio-irq;
+       disable-wp;
+       keep-power-in-suspend;
+       mmc-pwrseq = <&sdio_pwrseq>;
+       no-sd;
+       no-mmc;
+       non-removable;
+       sd-uhs-sdr50;
+       sd-uhs-sdr104;
+       vmmc-supply = <&vcc_3v3_s3>;
+       vqmmc-supply = <&vcc_1v8_s3>;
+       wakeup-source;
+       status = "okay";
+};

When you enable the sdio node on your v1.2 board with the broadcom
chip (using SYN43752), does the btsdio.ko bind to the device and
create an extra rfkill bluetooth node?

Good question, I didn't have it enabled in my build:

# CONFIG_BT_HCIBTSDIO is not set

Let me add it and report back.

So I've rebuilt it with btsdio.ko module enabled. As I boot the
system, WiFi (via SDIO) and Bluetooth (via UART) drivers get probed
and load their respective firmwares. btsdio.ko doesn't get
auto-loaded. If I load it manually after booting, it doesn't bind to
anything and doesn't create any extra rfkill nodes.

Is there anything else I need to check or look out for?

Best regards,
Alexey

quoted

If so, you'll want to blacklist the SYN43752 chip in the btsdio.ko.
Similar to https://github.com/jimmyhon/linux/commit/81c14dc2dea2ceaea8d390188b352d32e278abc8
The original logic was introduced in
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/bluetooth/btsdio.c?id=b4cdaba274247c9c841c6a682c08fa91fb3aa549

I will check, thank you for the pointers!

Best regards,
Alexey