linux-kernel - Re: [PATCH v1] mmc: sdhci-of-dwcmshc: fix DMA 128MB boundary

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Message-ID: <CAPDyKFqcMyM-=x+2FWNLhHY=gu5ApHNPQhp0xBKDJGr7BhEx4Q@mail.gmail.com>
Date: Thu, 22 Jan 2026 19:03:08 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: hehuan1@...incomputing.com
Cc: adrian.hunter@...el.com, linux-mmc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, ningyu@...incomputing.com, 
	linmin@...incomputing.com, pinkesh.vaghela@...fochips.com, 
	xuxiang@...incomputing.com
Subject: Re: [PATCH v1] mmc: sdhci-of-dwcmshc: fix DMA 128MB boundary

On Wed, 14 Jan 2026 at 13:23, <hehuan1@...incomputing.com> wrote:
>
> From: Huan He <hehuan1@...incomputing.com>
>
> This DWC MSHC has a 128MB limitation where the data buffer size and start
> address must not exceed the 128MB boundary. Registering the missing
> 'adma_write_desc' callback function.
>
> Signed-off-by: Huan He <hehuan1@...incomputing.com>

Applied for fixes and by adding a fixes tag, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/sdhci-of-dwcmshc.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
> index 51949cde0958..cabb709a8108 100644
> --- a/drivers/mmc/host/sdhci-of-dwcmshc.c
> +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
> @@ -1726,6 +1726,7 @@ static const struct sdhci_ops sdhci_dwcmshc_eic7700_ops = {
>         .set_uhs_signaling = sdhci_eic7700_set_uhs_wrapper,
>         .set_power = sdhci_set_power_and_bus_voltage,
>         .irq = dwcmshc_cqe_irq_handler,
> +       .adma_write_desc = dwcmshc_adma_write_desc,
>         .platform_execute_tuning = sdhci_eic7700_executing_tuning,
>  };
>
> --
> 2.25.1
>