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

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Message-ID: <db70f42e-0296-4f36-ac97-2ecf38b84f51@ti.com>
Date:   Tue, 28 Nov 2023 10:09:35 +0530
From:   Nitin Yadav <n-yadav@...com>
To:     Judith Mendez <jm@...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 11/28/2023 3:11 AM, Judith Mendez wrote:
> 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?
plz refer datasheet. No mention of DDR52 in this revised addition.
> 
>> +        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