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Message-ID: <ea99f171-e15c-4b57-8db2-b144bb604152@ti.com>
Date: Fri, 12 Apr 2024 17:14:19 -0500
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Subject: Re: [PATCH 6/7] arm64: dts: ti: k3-am69-sk: Remove HS400 mode support
 for eMMC
To: "Kumar, Udit" <u-kumar1@ti.com>, Rob Herring <robh@kernel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@linaro.org>
CC: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
        Tero
 Kristo <kristo@kernel.org>, Conor Dooley <conor+dt@kernel.org>,
        <linux-arm-kernel@lists.infradead.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, Bhavya Kapoor <b-kapoor@ti.com>,
        Dasnavis
 Sabiya <sabiya.d@ti.com>
References: <20240411225257.383889-1-jm@ti.com>
 <20240411225257.383889-7-jm@ti.com>
 <87a289ce-6260-4249-9829-0de189663532@ti.com>
Content-Language: en-US
From: Judith Mendez <jm@ti.com>
In-Reply-To: <87a289ce-6260-4249-9829-0de189663532@ti.com>
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Hi,

On 4/11/24 11:53 PM, Kumar, Udit wrote:
> Hi Judith
> 
> On 4/12/2024 4:22 AM, Judith Mendez wrote:
>> From: Dasnavis Sabiya <sabiya.d@ti.com>
>>
>> The eMMC fails to enumerate intermittently on HS400 mode. Also
>> observing multiple CQE recovery warnings.
>> Update the sdhci0 node to disable HS400 and set HS200 mode for
>> eMMC node.
>>
>> Signed-off-by: Dasnavis Sabiya <sabiya.d@ti.com>
>> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-am69-sk.dts | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts 
>> b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
>> index 50de2a448a3a6..a677bb9200a35 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
>> +++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
>> @@ -906,6 +906,7 @@ &main_sdhci0 {
>>       non-removable;
>>       ti,driver-strength-ohm = <50>;
>>       disable-wp;
>> +    no-mmc-hs400;
> 
> 
> This is just WA to get rid of CQE errors. I prefer to hold this patch 
> under debug from hardware side is not complete.

ok, will drop this patch.

~ Judith

> 
>>   };
>>   &main_sdhci1 {