From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Lee Jones <lee.jones@linaro.org>
Cc: linux-arm-msm@vger.kernel.org,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 4/4] arm64: dtb: qcom: qrb5165-rb5: add power domain to pcie0 phy
Date: Sun, 20 Dec 2020 19:58:45 +0300 [thread overview]
Message-ID: <20201220165845.3712599-5-dmitry.baryshkov@linaro.org> (raw)
In-Reply-To: <20201220165845.3712599-1-dmitry.baryshkov@linaro.org>
If QCA6391 chip (connected to PCIe0) is not powered at the PCIe probe
time, PCIe0 bus probe will timeout and the device will not be detected.
To ease device power up support, use qca639x as pcie0 phy power-domain.
This allows us to make sure that QCA6391 chip is powered on before PCIe0
probe happens.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
index e6bab9960cea..9aa7793cd7c0 100644
--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
+++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
@@ -457,6 +457,9 @@ &pcie0_phy {
status = "okay";
vdda-phy-supply = <&vreg_l5a_0p88>;
vdda-pll-supply = <&vreg_l9a_1p2>;
+
+ /* Power on QCA639x chip, otherwise PCIe bus timeouts */
+ power-domains = <&qca639x>;
};
&pcie1 {
--
2.29.2
prev parent reply other threads:[~2020-12-20 17:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-20 16:58 [PATCH 0/4] Add support for Qualcomm QCA639x chips family Dmitry Baryshkov
2020-12-20 16:58 ` [PATCH 1/4] dt-bindings: mfd: qcom,qca639x: add binding for QCA639x defvice Dmitry Baryshkov
2020-12-31 22:50 ` Rob Herring
2021-01-03 3:41 ` Dmitry Baryshkov
2021-01-14 14:33 ` Rob Herring
2021-01-14 16:55 ` Dmitry Baryshkov
2020-12-20 16:58 ` [PATCH 2/4] mfd: qca639x: add support for QCA639x powerup sequence Dmitry Baryshkov
2020-12-21 9:02 ` Lee Jones
2020-12-21 14:08 ` Dmitry Baryshkov
2020-12-22 10:16 ` Lee Jones
2020-12-31 22:52 ` Rob Herring
2020-12-20 16:58 ` [PATCH 3/4] arm64: dts: qcom: Add Bluetooth support on RB5 Dmitry Baryshkov
2020-12-20 16:58 ` Dmitry Baryshkov [this message]
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