From: Krishna chaitanya chundru <quic_krichai@quicinc.com>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: <linux-arm-msm@vger.kernel.org>, <linux-phy@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<quic_vbadigan@quicinc.com>, <quic_ramkri@quicinc.com>,
<quic_nitegupt@quicinc.com>, <quic_skananth@quicinc.com>,
<quic_vpernami@quicinc.com>, <quic_parass@quicinc.com>,
"Krishna chaitanya chundru" <quic_krichai@quicinc.com>
Subject: [PATCH v2 1/3] dt-bindings: phy: qcom,qmp: Add PCIe qcom,refclk-always-on property
Date: Tue, 7 Nov 2023 17:56:13 +0530 [thread overview]
Message-ID: <20231107-refclk_always_on-v2-1-de23962fc4b3@quicinc.com> (raw)
In-Reply-To: <20231107-refclk_always_on-v2-0-de23962fc4b3@quicinc.com>
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 --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
--
2.42.0
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
next prev parent reply other threads:[~2023-11-07 12:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-07 12:26 [PATCH v2 0/3] phy: qcom-qmp-pcie: Add support to keep refclk always on Krishna chaitanya chundru
2023-11-07 12:26 ` Krishna chaitanya chundru [this message]
2023-11-07 13:01 ` [PATCH v2 1/3] dt-bindings: phy: qcom,qmp: Add PCIe qcom,refclk-always-on property Dmitry Baryshkov
2023-11-08 15:52 ` Conor Dooley
2023-11-27 11:49 ` Krishna Chaitanya Chundru
2023-11-07 12:26 ` [PATCH v2 2/3] phy: qcom-qmp-pcie: Add endpoint refclk control register offset Krishna chaitanya chundru
2023-11-07 13:06 ` Dmitry Baryshkov
2023-11-09 9:36 ` Krishna Chaitanya Chundru
2023-11-09 9:45 ` Dmitry Baryshkov
2023-11-09 10:02 ` Krishna Chaitanya Chundru
2023-11-07 12:26 ` [PATCH v2 3/3] phy: qcom-qmp-pcie: Add support for keeping refclk always on Krishna chaitanya chundru
2023-11-07 13:08 ` Dmitry Baryshkov
2023-11-07 21:57 ` [PATCH v2 0/3] phy: qcom-qmp-pcie: Add support to keep " Konrad Dybcio
2023-11-09 9:32 ` Krishna Chaitanya Chundru
2023-11-09 13:57 ` Konrad Dybcio
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