Re: [PATCH V1 2/3] dt-bindings: ufs: Document bindings for SA8255P UFS Host Controller

[Krzysztof Kozlowski]

On Fri, Nov 14, 2025 at 08:26:45PM +0530, Ram Kumar Dwivedi wrote:
> From: Ram Kumar Dwivedi <quic_rdwivedi@xxxxxxxxxxx>
> 
> Document the device tree bindings for UFS host controller on
> Qualcomm SA8255P platform which integrates firmware-managed
> resources.
> 
> The platform firmware implements the SCMI server and manages
> resources such as the PHY, clocks, regulators and resets via the
> SCMI power protocol. As a result, the OS-visible DT only describes
> the controller’s MMIO, interrupt, IOMMU and power-domain interfaces.
> 
> The generic "qcom,ufshc" and "jedec,ufs-2.0" compatible strings are
> removed from the binding, since this firmware managed design won't
> be compatible with the drivers doing full resource management.
> 
> Co-developed-by: Anjana Hari <quic_ahari@xxxxxxxxxxx>
> Signed-off-by: Anjana Hari <quic_ahari@xxxxxxxxxxx>
> Signed-off-by: Ram Kumar Dwivedi <quic_rdwivedi@xxxxxxxxxxx>
> ---
>  .../bindings/ufs/qcom,sa8255p-ufshc.yaml      | 63 +++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml b/Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml
> new file mode 100644
> index 000000000000..3b31f6282feb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/ufs/qcom,sa8255p-ufshc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SA8255P UFS Host Controller
> +
> +maintainers:
> +  - Ram Kumar Dwivedi <ram.dwivedi@xxxxxxxxxxxxxxxx>
> +  - Anjana Hari <quic_ahari@xxxxxxxxxxx>
> +
> +properties:
> +  compatible:
> +    const: qcom,sa8255p-ufshc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  iommus:
> +    maxItems: 1
> +
> +  dma-coherent:

Just :true.

> +    type: boolean

Best regards,
Krzysztof