[PATCH v2] arm64: dts: rockchip: Fix Wifi/Bluetooth on ROCK Pi 4 boards

[PATCH v2] arm64: dts: rockchip: Fix Wifi/Bluetooth on ROCK Pi 4 boards

[Yogesh Hegde]

This patch fixes an issue affecting the Wifi/Bluetooth connectivity on
ROCK Pi 4 boards. Commit f471b1b2db08 ("arm64: dts: rockchip: Fix Bluetooth
on ROCK Pi 4 boards") introduced a problem with the clock configuration.
Specifically, the clock-names property of the sdio-pwrseq node was not
updated to 'lpo', causing the driver to wait indefinitely for the wrong clock
signal 'ext_clock' instead of the expected one 'lpo'. This prevented the proper
initialization of Wifi/Bluetooth chip on ROCK Pi 4 boards.

To address this, this patch updates the clock-names property of the
sdio-pwrseq node to "lpo" to align with the changes made to the bluetooth node.

This patch has been tested on ROCK Pi 4B.

Fixes: f471b1b2db08 ("arm64: dts: rockchip: Fix Bluetooth on ROCK Pi 4 boards")
Signed-off-by: Yogesh Hegde <yogi.kernel@gmail.com>

---
Changes in v2: Added the Fixes tag as per feedback from Vincent Legoll
	       <vincent.legoll@gmail.com>
---
 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 907071d4fe80..795a70948d9a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -45,7 +45,7 @@ led-0 {
 	sdio_pwrseq: sdio-pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		clocks = <&rk808 1>;
-		clock-names = "ext_clock";
+		clock-names = "lpo";
 		pinctrl-names = "default";
 		pinctrl-0 = <&wifi_enable_h>;
 		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
-- 
2.34.1


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Re: [PATCH v2] arm64: dts: rockchip: Fix Wifi/Bluetooth on ROCK Pi 4 boards

[Greg KH]

On Tue, Jul 18, 2023 at 10:09:41PM +0530, Yogesh Hegde wrote:
> This patch fixes an issue affecting the Wifi/Bluetooth connectivity on
> ROCK Pi 4 boards. Commit f471b1b2db08 ("arm64: dts: rockchip: Fix Bluetooth
> on ROCK Pi 4 boards") introduced a problem with the clock configuration.
> Specifically, the clock-names property of the sdio-pwrseq node was not
> updated to 'lpo', causing the driver to wait indefinitely for the wrong clock
> signal 'ext_clock' instead of the expected one 'lpo'. This prevented the proper
> initialization of Wifi/Bluetooth chip on ROCK Pi 4 boards.
> 
> To address this, this patch updates the clock-names property of the
> sdio-pwrseq node to "lpo" to align with the changes made to the bluetooth node.
> 
> This patch has been tested on ROCK Pi 4B.
> 
> Fixes: f471b1b2db08 ("arm64: dts: rockchip: Fix Bluetooth on ROCK Pi 4 boards")
> Signed-off-by: Yogesh Hegde <yogi.kernel@gmail.com>

Why are you saying this fixes a specific old commit and not also
properly cc: the stable@vger.kernel.org alias?

Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

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Re: [PATCH v2] arm64: dts: rockchip: Fix Wifi/Bluetooth on ROCK Pi 4 boards

[Yogesh Hegde]

On Tue, Jul 18, 2023 at 07:37:21PM +0200, Greg KH wrote:
> On Tue, Jul 18, 2023 at 10:09:41PM +0530, Yogesh Hegde wrote:
> > This patch fixes an issue affecting the Wifi/Bluetooth connectivity on
> > ROCK Pi 4 boards. Commit f471b1b2db08 ("arm64: dts: rockchip: Fix Bluetooth
> > on ROCK Pi 4 boards") introduced a problem with the clock configuration.
> > Specifically, the clock-names property of the sdio-pwrseq node was not
> > updated to 'lpo', causing the driver to wait indefinitely for the wrong clock
> > signal 'ext_clock' instead of the expected one 'lpo'. This prevented the proper
> > initialization of Wifi/Bluetooth chip on ROCK Pi 4 boards.
> > 
> > To address this, this patch updates the clock-names property of the
> > sdio-pwrseq node to "lpo" to align with the changes made to the bluetooth node.
> > 
> > This patch has been tested on ROCK Pi 4B.
> > 
> > Fixes: f471b1b2db08 ("arm64: dts: rockchip: Fix Bluetooth on ROCK Pi 4 boards")
> > Signed-off-by: Yogesh Hegde <yogi.kernel@gmail.com>
> 
> Why are you saying this fixes a specific old commit and not also
> properly cc: the stable@vger.kernel.org alias?
It is a mistake on my part. I apologize for the mistake. 
> 
> Please read:
>     https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> for how to do this properly.
Thanks for the link, I will read through it and resend a v3 of the patch 
with fixes. 

Thanks and Regards 
-- Yogesh 

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