Re: [PATCH 2/3] scsi: ufs: spacemit: k3: Add UFS Host Controller driver

Anirudh Srinivasan <[email protected]> Sun, 12 Jul 2026 15:16:40 -0500

Newsgroups	dev.linux.lists.spacemit,org.infradead.lists.linux-riscv,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-scsi
Message-ID	<7x3b4sttnc4oxkuvxmpkihfi76lkapjcigo7khgcgfytvol7w2@v5ykuyrk2z3m>

On Thu, Jul 02, 2026 at 02:31:36AM +0000, Yixun Lan wrote:
> SpacemiT K3 SoC consist of UFS (Universal Flash Storage) Host Controller
> which has features compatible with JEDEC UFS 2.2, MIPI UniPro v1.61 and
> M-PHY v3.0 standard.
> 
> Signed-off-by: Yixun Lan <[email protected]>
> ---
>  drivers/ufs/host/Kconfig        |  12 +
>  drivers/ufs/host/Makefile       |   1 +
>  drivers/ufs/host/ufs-spacemit.c | 931 ++++++++++++++++++++++++++++++++++++++++
>  drivers/ufs/host/ufs-spacemit.h |  90 ++++
>  4 files changed, 1034 insertions(+)
> 
> diff --git a/drivers/ufs/host/Kconfig b/drivers/ufs/host/Kconfig
> index ff170c0b6da0..4f53b7f7688f 100644
> --- a/drivers/ufs/host/Kconfig
> +++ b/drivers/ufs/host/Kconfig
> @@ -132,6 +132,18 @@ config SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
>  	bool
>  	default y if SCSI_UFS_EXYNOS && SCSI_UFS_CRYPTO
>  
> +config SCSI_UFS_SPACEMIT
> +	tristate "SpacemiT UFS controller driver"
> +	depends on SCSI_UFSHCD_PLATFORM && ARCH_SPACEMIT

Can you add SCSI_UFSHCD_PLATFORM and SCSI_UFS_SPACEMIT as modules to
riscv defconfig (or just add the former and add a default y if
ARCH_SPACEMIT in this Kconfig entry). This will let defconfig kernels
to boot with persistant rootfs on these devices.

> 
> -- 
> 2.54.0
>