[PATCH v2 0/3] Add UFS Host driver support for SpacemiT K3 SoC

[Aurelien Jarno]

On 2026-07-25 10:37, Yixun Lan wrote:
> This series try to add UFS support for SpacemiT K3 SoC, the controller
> components consists of System Bus Interface Unit, UFS Host Controller
> Interface, UFS Transport Protocol Layer, UFS Host Registers, Device
> Management Entity (DME), Transport Layer, Network Layer, Data Link
> Layer, PHY Adapter Layer, and M-PHY Interface. A more detail functional
> block diagram can be found in SpacemiT website, chapter 9.7.3 [1]
> 
> Please note, in order to test this driver, the UFS clock driver[2] here
> should be applied first as a prerequisite patch.
> 
> One known issue is that the device will occasionally raise BKOPS interrupt
> when doing some high load test, log from dmesg shows
> 
> [  806.710763] ufshcd-spacemit c0e00000.ufshc: ufshcd_bkops_exception_event_handler: device raised urgent BKOPS exception for bkops status 1
> 
> Link: https://spacemit.com/community/document/info?nodepath=hardware/key_stone/k3/k3_docs/k3_usermanual/09_memory_storage.md&lang=en [1]
> Link: https://lore.kernel.org/all/20260630-06-clk-ufs-support-v1-0-cf7521d1d0fe@kernel.org/ [2]
> Signed-off-by: Yixun Lan <dlan at kernel.org>
> ---
> Changes in v2:
> - fix missing interrupts property
> - move ufs node to k3-com260.dtsi
> - convert freq-table-hz to operating-points-v2
> - rework reset_control, fix header and drop global variable
> - drop dump_host_regs() debug interface
> - converge and refactor dme_set() operations
> - massive reduce of busy delay() loops
> - drop vendor specific hce_enable_notify(), fallback to default
> - drop unused member from struct ufs_spacemit_host
> - add COMPILE_TEST support to Kconfig
> - comment style fix
> - Link to v1: https://patch.msgid.link/20260702-08-k3-ufs-support-v1-0-1a64a3ab128f@kernel.org
> 
> ---
> Yixun Lan (3):
>       scsi: ufs: spacemit: dt-bindings: Add UFS controller for K3 SoC
>       scsi: ufs: spacemit: k3: Add UFS Host Controller driver
>       riscv: dts: spacemit: k3: Add UFS support
> 
>  .../devicetree/bindings/ufs/spacemit,k3-ufshc.yaml |  56 ++
>  arch/riscv/boot/dts/spacemit/k3-com260.dtsi        |   4 +
>  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts       |   4 +
>  arch/riscv/boot/dts/spacemit/k3.dtsi               |  27 +
>  drivers/ufs/host/Kconfig                           |  12 +
>  drivers/ufs/host/Makefile                          |   1 +
>  drivers/ufs/host/ufs-spacemit.c                    | 686 +++++++++++++++++++++
>  drivers/ufs/host/ufs-spacemit.h                    |  79 +++
>  8 files changed, 869 insertions(+)
> ---
> base-commit: dc59e4fea9d83f03bad6bddf3fa2e52491777482
> change-id: 20260605-08-k3-ufs-support-c8b308e415e2

Thanks for this new version. Patches 2 and 3 are:

Tested-by: Aurelien Jarno <aurelien at aurel32.net>

Regards
Aurelien 

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien at aurel32.net                     http://aurel32.net