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

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On 11/8/2023 9:22 PM, Conor Dooley wrote:
On Tue, Nov 07, 2023 at 03:01:47PM +0200, Dmitry Baryshkov wrote:
On Tue, 7 Nov 2023 at 14:26, Krishna chaitanya chundru
<quic_krichai@xxxxxxxxxxx> wrote:
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@xxxxxxxxxxx>
---
  .../devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml        | 7 +++++++
  1 file changed, 7 insertions(+)

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
nit: there are some

However this still doesn't describe what kind of issues with clkreq
you observe. I mean, clkreq is just a GPIO pin.

+      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).
Dimitry's issues with the property aside, putting "(optional)" in the
description is meaningless - qcom,refclk-always-on isn't listed in the
required properties section, so therefore has to be optional.

Cheers,
Conor.

I removed the optional flag and updated the description.

- Krishna chaitanya.

+
  required:
    - compatible
    - reg

--
2.42.0



--
With best wishes
Dmitry




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