linux-kernel - [PATCH v24 2/2] arm64: dts: qcom: sc7280-herobrine: Add nodes for onboard USB hub

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Date:   Fri, 22 Jul 2022 09:32:45 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Stephen Boyd <swboyd@...omium.org>
Cc:     Matthias Kaehlcke <mka@...omium.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: [PATCH v24 2/2] arm64: dts: qcom: sc7280-herobrine: Add nodes for onboard USB hub

Add nodes for the onboard USB hub on herobrine devices. Remove the
'always-on' property from the hub regulator, since the regulator
is now managed by the onboard_usb_hub driver.

This requires "CONFIG_USB_ONBOARD_HUB=y".

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
Reviewed-by: Douglas Anderson <dianders@...omium.org>
---

Changes in v24:
- renamed 'companion-hub' to 'peer-hub' according to the change
  in the binding

Changes in v23:
- added note about CONFIG_USB_ONBOARD_HUB to the commit message
- added 'Reviewed-by' tags from Stephen and Doug

Changes in v22:
- patch added to the series

 .../arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 21 ++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
index 3f8996c00b05..1fd381a903de 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
@@ -144,8 +144,8 @@ pp3300_hub: pp3300-hub-regulator {
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 
+		/* The BIOS leaves this regulator on */
 		regulator-boot-on;
-		regulator-always-on;
 
 		gpio = <&tlmm 157 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
@@ -596,6 +596,25 @@ &usb_1 {
 
 &usb_1_dwc3 {
 	dr_mode = "host";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* 2.x hub on port 1 */
+	usb_hub_2_x: hub@1 {
+		compatible = "usbbda,5411";
+		reg = <1>;
+		vdd-supply = <&pp3300_hub>;
+		peer-hub = <&usb_hub_3_x>;
+	};
+
+	/* 3.x hub on port 2 */
+	usb_hub_3_x: hub@2 {
+		compatible = "usbbda,411";
+		reg = <2>;
+		vdd-supply = <&pp3300_hub>;
+		peer-hub = <&usb_hub_2_x>;
+	};
 };
 
 &usb_1_hsphy {
-- 
2.37.1.359.gd136c6c3e2-goog