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[v2,1/3] dt-bindings: phy: qcom,qmp: Add PCIe qcom,refclk-always-on property

Message ID 20231107-refclk_always_on-v2-1-de23962fc4b3@quicinc.com
State New
Headers show
Series phy: qcom-qmp-pcie: Add support to keep refclk always on | expand

Commit Message

Krishna Chaitanya Chundru Nov. 7, 2023, 12:26 p.m. UTC
Document qcom,refclk-always-on property which is needed in some platforms
to supply refclk even in PCIe low power states.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
---
 .../devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml        | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
index 2c3d6553a7ba..263291447a5b 100644
--- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
@@ -93,6 +93,13 @@  properties:
   "#phy-cells":
     const: 0
 
+  qcom,refclk-always-on:
+    type: boolean
+    description: If there is some issues in platform with clkreq signal
+      propagation to the host and due to that host will not send refclk, which
+      results in linkdown in L1.2 or L1.1 exit initiated by EP. This property
+      if set keeps refclk always on even in Low power states (optional).
+
 required:
   - compatible
   - reg