linux-kernel - Re: [PATCH 1/3] mmc: sdhci_am654: Workaround for Errata i2312

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <b473517d-3a59-4554-9673-a49b9e3a84f7@intel.com>
Date: Thu, 26 Jun 2025 09:51:28 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Judith Mendez <jm@...com>, Ulf Hansson <ulf.hansson@...aro.org>, "Vignesh
 Raghavendra" <vigneshr@...com>
CC: Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-mmc@...r.kernel.org>
Subject: Re: [PATCH 1/3] mmc: sdhci_am654: Workaround for Errata i2312

On 25/06/2025 01:12, Judith Mendez wrote:
> Errata i2312 [0] for K3 silicon mentions the maximum obtainable
> timeout through MMC host controller is 700ms. And for commands taking
> longer than 700ms, hardware timeout should be disabled and software
> timeout should be used.
> 
> The workaround for Errata i2312 can be achieved by adding
> SDHCI_QUIRK2_DISABLE_HW_TIMEOUT quirk in sdhci_am654.
> 
> [0] https://www.ti.com/lit/pdf/sprz487
> 
> Signed-off-by: Judith Mendez <jm@...com>

Acked-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
>  drivers/mmc/host/sdhci_am654.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
> index ea14d56558c4..86d87d8e0675 100644
> --- a/drivers/mmc/host/sdhci_am654.c
> +++ b/drivers/mmc/host/sdhci_am654.c
> @@ -613,7 +613,8 @@ static const struct sdhci_ops sdhci_am654_ops = {
>  static const struct sdhci_pltfm_data sdhci_am654_pdata = {
>  	.ops = &sdhci_am654_ops,
>  	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
> -	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
> +	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
> +		   SDHCI_QUIRK2_DISABLE_HW_TIMEOUT,
>  };
>  
>  static const struct sdhci_am654_driver_data sdhci_am654_sr1_drvdata = {
> @@ -643,7 +644,8 @@ static const struct sdhci_ops sdhci_j721e_8bit_ops = {
>  static const struct sdhci_pltfm_data sdhci_j721e_8bit_pdata = {
>  	.ops = &sdhci_j721e_8bit_ops,
>  	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
> -	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
> +	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
> +		   SDHCI_QUIRK2_DISABLE_HW_TIMEOUT,
>  };
>  
>  static const struct sdhci_am654_driver_data sdhci_j721e_8bit_drvdata = {
> @@ -667,7 +669,8 @@ static const struct sdhci_ops sdhci_j721e_4bit_ops = {
>  static const struct sdhci_pltfm_data sdhci_j721e_4bit_pdata = {
>  	.ops = &sdhci_j721e_4bit_ops,
>  	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
> -	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
> +	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
> +		   SDHCI_QUIRK2_DISABLE_HW_TIMEOUT,
>  };
>  
>  static const struct sdhci_am654_driver_data sdhci_j721e_4bit_drvdata = {