diff options
Diffstat (limited to 'recipes-kernel/linux/linux-yocto/qca6390-dts/0003-arm64-dtb-qcom-qrb5165-rb5-add-power-domain-to-pcie0.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-yocto/qca6390-dts/0003-arm64-dtb-qcom-qrb5165-rb5-add-power-domain-to-pcie0.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-yocto/qca6390-dts/0003-arm64-dtb-qcom-qrb5165-rb5-add-power-domain-to-pcie0.patch b/recipes-kernel/linux/linux-yocto/qca6390-dts/0003-arm64-dtb-qcom-qrb5165-rb5-add-power-domain-to-pcie0.patch new file mode 100644 index 0000000..0d868f8 --- /dev/null +++ b/recipes-kernel/linux/linux-yocto/qca6390-dts/0003-arm64-dtb-qcom-qrb5165-rb5-add-power-domain-to-pcie0.patch @@ -0,0 +1,35 @@ +From 0e2a4a6117aeffeb6150e0a23d90c6748ab809bf Mon Sep 17 00:00:00 2001 +From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> +Date: Sun, 20 Dec 2020 03:17:50 +0300 +Subject: [PATCH 3/3] arm64: dtb: qcom: qrb5165-rb5: add power domain to pcie0 + phy + +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> +Upstream-Status: Inappropriate +--- + 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 586ac20ff956..c86b020d525e 100644 +--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts ++++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts +@@ -704,6 +704,9 @@ &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 { +-- +2.39.2 + |