Re: [PATCH v4 1/3] scsi: ufs: spacemit: dt-bindings: Add UFS controller for K3 SoC

[Conor Dooley <conor@kernel.org>]

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On Tue, Sep 08, 2026 at 07:42:03AM +0000, Yixun Lan wrote:
> Document the compatible for UFS (Universal Flash Storage) Host Controller
> which found in SpacemiT K3 SoC chip. Its features are listed below:
> 
> - Compliant with MIPI UniPro v1.61 specification.
> - Compliant with M-PHY v3.0 specification.
> - Compliant with UFS HCI v2.1 specification.
> - Supports up to 2 Tx and 2 Rx lanes, up to HS-GEAR3 5.8 Gbps per lane.
> - Supports standard low-power hibernate to reduce power consumption.
> 
> Signed-off-by: Yixun Lan <dlan@kernel.org>
> ---
>  .../devicetree/bindings/ufs/spacemit,k3-ufshc.yaml | 56 ++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/ufs/spacemit,k3-ufshc.yaml b/Documentation/devicetree/bindings/ufs/spacemit,k3-ufshc.yaml
> new file mode 100644
> index 000000000000..dda533c852e8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ufs/spacemit,k3-ufshc.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/ufs/spacemit,k3-ufshc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SpacemiT K3 SoC UFS Host Controller
> +
> +maintainers:
> +  - Yixun Lan <dlan@kernel.org>
> +
> +properties:
> +  compatible:
> +    const: spacemit,k3-ufshc
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: aclk
> +      - const: ref_clk

It's the usual refrain here, about having "clk" in clock names.
"axi" and "ref" perhaps?
Otherwise, looks fine to me.

pw-bot: changes-requested

Thanks,
Conor.

> +
> +  resets:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - resets
> +
> +allOf:
> +  - $ref: ufs-common.yaml
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/spacemit,k3-clocks.h>
> +    #include <dt-bindings/reset/spacemit,k3-resets.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    ufs@c0e00000 {
> +        compatible = "spacemit,k3-ufshc";
> +        reg = <0xc0e00000 0x40000>;
> +        clocks = <&syscon_apmu CLK_APMU_UFS_ACLK>,
> +                 <&syscon_apmu CLK_APMU_UFS_REFCLK>;
> +        clock-names = "aclk", "ref_clk";
> +        resets = <&syscon_apmu RESET_APMU_UFS_ACLK>;
> +        interrupts = <135 IRQ_TYPE_LEVEL_HIGH>;
> +        lanes-per-direction = <2>;
> +    };
> 
> -- 
> 2.55.0
> 

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