linux-kernel - Re: [PATCH] riscv: defconfig: Add MMC support for Kendryte K230

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Message-ID: <20251203-trapper-scorch-f3246ef45615@spud>
Date: Wed, 3 Dec 2025 09:56:59 +0000
From: Conor Dooley <conor@...nel.org>
To: q691800735@....com
Cc: linux-riscv@...ts.infradead.org, pjw@...nel.org, palmer@...belt.com,
	aou@...s.berkeley.edu, alex@...ti.fr, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] riscv: defconfig: Add MMC support for Kendryte K230

On Wed, Dec 03, 2025 at 05:26:14PM +0800, q691800735@....com wrote:
> From: jybruceupup <q691800735@....com>
> 
> Add dedicated driver `sdhci-of-kendryte.c` for Kendryte K230's DWC MSHC
> SD/eMMC controller, enabling boot-essential external storage access.
> 
> Enable driver in defconfig: `CONFIG_MMC_SDHCI_OF_DWCMSHC_KENDRYTE=y`
> - DT-matched ("canaan,k230-dw-mshc")
> - Uses upstream sdhci-pltfm framework
> - No impact on other RISC-V platforms
> - Supports K230-based boards (e.g., CanMV DongshanPi)
> 
> Signed-off-by: jybruceupup <q691800735@....com>
> ---
>  arch/riscv/configs/defconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
> index fc2725cbc..5848ec2b9 100644
> --- a/arch/riscv/configs/defconfig
> +++ b/arch/riscv/configs/defconfig
> @@ -232,6 +232,7 @@ CONFIG_MMC=y
>  CONFIG_MMC_SDHCI=y
>  CONFIG_MMC_SDHCI_PLTFM=y
>  CONFIG_MMC_SDHCI_OF_DWCMSHC=y
> +CONFIG_MMC_SDHCI_OF_DWCMSHC_KENDRYTE=y

This symbol does not exist in upstream linux, nor has any patch been
sent that adds it.

This patch should be in a series that adds the related driver changes.

>  CONFIG_MMC_SDHCI_OF_K1=y
>  CONFIG_MMC_SDHCI_CADENCE=y
>  CONFIG_MMC_SPI=y
> -- 
> 2.52.0
> 

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