linux-kernel - Re: [PATCH 2/3] arm64: dts: rockchip: add Quartz64-A pmu_io

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Date:   Thu, 27 Jan 2022 06:57:00 +0100
From:   Johan Jonker <jbx6244@...il.com>
To:     Peter Geis <pgwipeout@...il.com>, Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: rockchip: add Quartz64-A pmu_io_domains

Hi Peter,

On 1/27/22 02:00, Peter Geis wrote:
> Several io power domains on the Quartz64-A operate at 1.8v.
> Add the pmu_io_domains definition to enable support for this.
> This permits the enablement of the following features:
> sdio - wifi support
> sdhci - mmc-hs200-1_8v
> 
> Signed-off-by: Peter Geis <pgwipeout@...il.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> index d9eb92d59099..33c2c18caaa9 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> @@ -482,6 +482,19 @@ vcc_sd_h: vcc-sd-h {
>  	};
>  };
>  

https://files.pine64.org/doc/quartz64/Quartz64_model-A_schematic_v2.0_20210427.pdf

Could you check with the IO Power Domain Map?

> +&pmu_io_domains {
> +	pmuio1-supply = <&vcc3v3_pmu>;
VCC3V3_PMU

> +	pmuio2-supply = <&vcc3v3_pmu>;
VCC3V3_PMU

> +	vccio1-supply = <&vccio_acodec>;
VCCIO_ACODEC

> +	vccio2-supply = <&vcc_1v8>;
VCC_1V8

> +	vccio3-supply = <&vccio_sd>;
VCCIO_SD

> +	vccio4-supply = <&vcc_1v8>;
==> VCC1V8_PMU

> +	vccio5-supply = <&vcc_3v3>;
==> VCC_1V8

> +	vccio6-supply = <&vcc1v8_dvp>;
VCC1V8_DVP

> +	vccio7-supply = <&vcc_3v3>;
VCC_3V3

> +	status = "okay";
> +};
> +
>  &sdhci {
>  	bus-width = <8>;
>  	mmc-hs200-1_8v;