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Message-ID: <c35b3e80-7889-473d-8365-88436c3cb9a9@kwiboo.se>
Date: Wed, 19 Jun 2024 14:22:57 +0200
From: Jonas Karlman <jonas@...boo.se>
To: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>, Lee Jones
 <lee@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner
 <heiko@...ech.de>, Chris Zhong <zyw@...k-chips.com>, Zhang Qing
 <zhangqing@...k-chips.com>, Chris Morgan <macromorgan@...mail.com>, Furkan
 Kardame <f.kardame@...jaro.org>, Michael Riesch
 <michael.riesch@...fvision.net>
Cc: kernel@...labora.com, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] arm64: dts: rockchip: Fix mic-in-differential usage
 on rk3568-rock-3a

Hi Cristian,

On 2024-06-19 13:23, Cristian Ciocaltea wrote:
> The 'mic-in-differential' DT property supported by the RK809/RK817 audio
> codec driver is actually valid if prefixed with 'rockchip,':
> 
>   DTC_CHK arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dtb
>   rk3568-rock-3a.dtb: pmic@20: codec: 'mic-in-differential' does not match any of the regexes: 'pinctrl-[0-9]+'
> 	from schema $id: http://devicetree.org/schemas/mfd/rockchip,rk809.yaml#
> 
> Make use of the correct property name.
> 
> Fixes: a84ffd2ef1ff ("arm64: dts: rockchip: Fix mic-in-differential usage on rock-3a")
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
> index ebdedea15ad1..0b54dfe92d6e 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
> @@ -533,7 +533,7 @@ regulator-state-mem {
>  		};
>  
>  		codec {
> -			mic-in-differential;
> +			rockchip,mic-in-differential;

If I understand the schematics correctly, only one wire is connected so
this board cannot really use differential signaling, and this should
probably instead be dropped.

Regards,
Jonas

>  		};
>  	};
>  };
> 


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