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[4/4] arm64: dtb: qcom: qrb5165-rb5: add power domain to pcie0 phy

Message ID 20201220165845.3712599-5-dmitry.baryshkov@linaro.org
State New
Headers show
Series Add support for Qualcomm QCA639x chips family | expand

Commit Message

Dmitry Baryshkov Dec. 20, 2020, 4:58 p.m. UTC 
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(+)

-- 
2.29.2
diff mbox series

Patch

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 {