From 9a556a0afc0abbeddf09915918097ad8583fc940 Mon Sep 17 00:00:00 2001 From: Caleb Connolly Date: Wed, 3 Apr 2024 14:07:48 +0200 Subject: [PATCH] dts: sdm845-db845c: add u-boot fixups The USB VBUS supply for the type-A port is enabled via a GPIO regulator. This is incorrectly modelled in Linux where only the PCIe dependency is expressed. The correct way to handle this will be through a usb-connector node, but for now we'll just mark the regulator as always-on so that it will be enabled automatically during boot. Reviewed-by: Sumit Garg Reviewed-by: Neil Armstrong Signed-off-by: Caleb Connolly --- arch/arm/dts/sdm845-db845c-u-boot.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 arch/arm/dts/sdm845-db845c-u-boot.dtsi diff --git a/arch/arm/dts/sdm845-db845c-u-boot.dtsi b/arch/arm/dts/sdm845-db845c-u-boot.dtsi new file mode 100644 index 00000000000..906f9faa545 --- /dev/null +++ b/arch/arm/dts/sdm845-db845c-u-boot.dtsi @@ -0,0 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Needed for Linux to boot from USB, otherwise if PCIe driver is not in initramfs + * the VBUS supply will never get turned on. + * https://lore.kernel.org/linux-arm-msm/20240320122515.3243711-1-caleb.connolly@linaro.org/ + */ +&pcie0_3p3v_dual { + regulator-always-on; +}; -- 2.39.2