linux-kernel - Re: [PATCH v2 1/2] arm64: dts: ti: k3-am62a-main: Add sdhci0 instance

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Date:   Mon, 27 Nov 2023 15:41:56 -0600
From:   Judith Mendez <jm@...com>
To:     Nitin Yadav <n-yadav@...com>, <nm@...com>, <vigneshr@...com>,
        <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] arm64: dts: ti: k3-am62a-main: Add sdhci0 instance

On 10/30/23 1:31 AM, Nitin Yadav wrote:
> Add sdhci0 DT node in k3-am62a-main for eMMC support. Droping
> ITAP values as they are NA in datasheet[0] for lower speed modes.
> 
> [0]https://www.ti.com/lit/gpn/am62a3 Table: 7-79 (Page No. 179)
> 

Minor comment below. All else looks good to me.

Reviewed by: Judith Mendez <jm@...com>

> Signed-off-by: Nitin Yadav <n-yadav@...com>
> ---
>   arch/arm64/boot/dts/ti/k3-am62a-main.dtsi | 19 +++++++++++++++++++
>   1 file changed, 19 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi
> index de36abb243f1..89b8b7d302cd 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi
> @@ -488,6 +488,25 @@ main_gpio1: gpio@...000 {
>   		status = "disabled";
>   	};
>   
> +	sdhci0: mmc@...0000 {
> +		compatible = "ti,am62-sdhci";
> +		reg = <0x00 0xfa10000 0x00 0x260>, <0x00 0xfa18000 0x00 0x134>;
> +		interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
> +		power-domains = <&k3_pds 57 TI_SCI_PD_EXCLUSIVE>;
> +		clocks = <&k3_clks 57 5>, <&k3_clks 57 6>;
> +		clock-names = "clk_ahb", "clk_xin";
> +		assigned-clocks = <&k3_clks 57 6>;
> +		assigned-clock-parents = <&k3_clks 57 8>;
> +		mmc-hs200-1_8v;
> +		ti,trm-icp = <0x2>;
> +		ti,otap-del-sel-legacy = <0x0>;
> +		ti,otap-del-sel-mmc-hs = <0x0>;
> +		ti,otap-del-sel-hs200 = <0x6>;

I am wondering why DDR52 speed mode was not added?

> +		bus-width = <8>;
> +		ti,clkbuf-sel = <0x7>;
> +		status = "disabled";
> +	};
> +
>   	sdhci1: mmc@...0000 {
>   		compatible = "ti,am62-sdhci";
>   		reg = <0x00 0xfa00000 0x00 0x260>, <0x00 0xfa08000 0x00 0x134>;

~ Judith