[PATCH v2 2/3] arm64: dts: exynos: ExynosAutov920: Add regulators for the USB
From: Pritam Manohar Sutar <hidden>
Date: 2026-01-22 12:51:38
Also in:
linux-arm-kernel, linux-samsung-soc, lkml
Subsystem:
arm/samsung s3c, s5p and exynos arm architectures, the rest · Maintainers:
Krzysztof Kozlowski, Peter Griffin, Linus Torvalds
Add dummy regulator for USB and PHY supplies. Add vbus regulator that is enabled by GPIO pin. Signed-off-by: Pritam Manohar Sutar <redacted> --- .../boot/dts/exynos/exynosautov920-sadk.dts | 139 ++++++++++++++++++ 1 file changed, 139 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts b/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
index a397f068ed53..f90f7704597c 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
+++ b/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts@@ -52,6 +52,76 @@ memory@80000000 { <0x8 0x80000000 0x1 0xfba00000>, <0xa 0x00000000 0x2 0x00000000>; }; + + /* TODO: Remove this once PMIC is implemented */ + dummy_regulator: regulator-0 { + compatible = "regulator-fixed"; + regulator-name = "dummy_regulator"; + }; + + usbdrd31_dwc3_vbus: usbdrd31_dwc3-vbus { + compatible = "regulator-fixed"; + regulator-name = "usbdrd31_dwc3-vbus"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + enable-active-high; + regulator-always-on; + gpio = <&gpp2 0 GPIO_ACTIVE_HIGH>; + }; + + /* Use gpio for enabling vbus regulator */ + usb_phy0: usb-phy0 { + compatible = "usb-nop-xceiv"; + vbus-supply = <&usbdrd31_dwc3_vbus>; + }; + + usbdrd20_dwc3_0_vbus: usbdrd20_dwc3_0-vbus { + compatible = "regulator-fixed"; + regulator-name = "usbdrd20_dwc3_0-vbus"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + enable-active-high; + regulator-always-on; + gpio = <&gpp2 1 GPIO_ACTIVE_HIGH>; + }; + + /* Use gpio for enabling vbus regulator */ + usb_phy1: usb-phy1 { + compatible = "usb-nop-xceiv"; + vbus-supply = <&usbdrd20_dwc3_0_vbus>; + }; + + usbdrd20_dwc3_1_vbus: usbdrd20_dwc3_1-vbus { + compatible = "regulator-fixed"; + regulator-name = "usbdrd20_dwc3_1-vbus"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + enable-active-high; + regulator-always-on; + gpio = <&gpp2 2 GPIO_ACTIVE_HIGH>; + }; + + /* Use gpio for enabling vbus regulator */ + usb_phy2: usb-phy2 { + compatible = "usb-nop-xceiv"; + vbus-supply = <&usbdrd20_dwc3_1_vbus>; + }; + + usbdrd20_dwc3_2_vbus: usbdrd20_dwc3_2-vbus { + compatible = "regulator-fixed"; + regulator-name = "usbdrd20_dwc3_2-vbus"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + enable-active-high; + regulator-always-on; + gpio = <&gpp2 3 GPIO_ACTIVE_HIGH>; + }; + + /* Use gpio for enabling vbus regulator */ + usb_phy3: usb-phy3 { + compatible = "usb-nop-xceiv"; + vbus-supply = <&usbdrd20_dwc3_2_vbus>; + }; }; &pinctrl_alive {
@@ -86,3 +156,72 @@ &usi_0 { &xtcxo { clock-frequency = <38400000>; }; + +&usbdrd31_ssphy { + dvdd-supply = <&dummy_regulator>; + vdd18-supply = <&dummy_regulator>; +}; + +&usbdrd31_hsphy { + dvdd-supply = <&dummy_regulator>; + vdd18-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd31_dwc3 { + maximum-speed = "super-speed-plus"; + usb-phy = <&usb_phy0>; +}; + +&usbdrd31 { + vdd10-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd20_phy0 { + dvdd-supply = <&dummy_regulator>; + vdd18-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd20_dwc3_0 { + maximum-speed = "high-speed"; + usb-phy = <&usb_phy1>; +}; + +&usbdrd20_0 { + vdd10-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd20_phy1 { + dvdd-supply = <&dummy_regulator>; + vdd18-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd20_dwc3_1 { + maximum-speed = "high-speed"; + usb-phy = <&usb_phy2>; +}; + +&usbdrd20_1 { + vdd10-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd20_phy2 { + dvdd-supply = <&dummy_regulator>; + vdd18-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +}; + +&usbdrd20_dwc3_2 { + maximum-speed = "high-speed"; + usb-phy = <&usb_phy3>; +}; + +&usbdrd20_2 { + vdd10-supply = <&dummy_regulator>; + vdd33-supply = <&dummy_regulator>; +};
--
2.34.1