Re: [PATCH v2] ARM: dts: samsung: exynos4210-i9100: Enable RTS/CTS in Bluetooth node

[Paul Cercueil]

Hi,

Le samedi 29 août 2026 à 12:15 +0200, Paul Cercueil a écrit :
> The BCM4330 is connected using CTS/RTS too, so add the 'uart-has-
> rtscts'
> property.
> 
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
> 
> Notes:
>     Changes:
>     
>     V1 was: "ARM: dts: samsung: exynos4210-i9100: Fix Bluetooth node"
>     
>     -v2: Drop max-speed property. It's only supposed to be used in
> some
>          cases, which don't apply here. As this was the "fix" for
> getting
>          Bluetooth to work on my device, which will be applied to the
>          driver instead, the Fixes: tag was removed.

I'll V3. I think I did not understand properly what 'max-speed' was
for, and indeed it does apply in this case - the Bluetooth chip's
maximum rate is 4 Mbps while the max baudrate of the SoC's UART is 3
Mbps.

Cheers,
-Paul

> 
>  arch/arm/boot/dts/samsung/exynos4210-i9100.dts | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
> b/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
> index 8a635bee59fa..95964be7daa8 100644
> --- a/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
> +++ b/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
> @@ -875,6 +875,7 @@ &serial_0 {
>  	status = "okay";
>  
>  	pinctrl-names = "default";
> +	uart-has-rtscts;
>  	pinctrl-0 = <&bt_en>, <&bt_res>, <&uart0_data>,
> <&uart0_fctl>;
>  
>  	bluetooth {