[PATCH 3/3] dt-bindings: ufs: qcom: Document HS gear and rate limit properties

Ram Kumar Dwivedi
2025-07-22T16:11:44Z

Add documentation for two new optional properties:
- limit-hs-gear
- limit-rate

These properties allow platforms to restrict the maximum high-speed
gear and rate used by the UFS controller. This is required for
certain automotive platforms with hardware constraints.

Signed-off-by: Ram Kumar Dwivedi <quic_rdwivedi@quicinc.com>
---
Documentation/devicetree/bindings/ufs/qcom,ufs.yaml | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
index 6c6043d9809e..9dedd09df9e0 100644
--- a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
+++ b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
@@ -111,6 +111,16 @@ properties:
description:
GPIO connected to the RESET pin of the UFS memory device.

+ limit-hs-gear:
+ maxItems: 1
+ description:
+ Limit max phy hs gear
+
+ limit-rate:
+ maxItems: 1
+ description:
+ Limit max phy hs rate
+
required:
- compatible
- reg
--
2.50.1