[PATCH v2 19/22] arm64: dts: apple: t8103: Mark ATC USB AON domains as always-on
From: Sven Peter <sven@kernel.org>
Date: 2025-09-06 15:43:40
Also in:
asahi, b4-sent, linux-devicetree, linux-phy, linux-usb, lkml
Subsystem:
arm/apple machine support, the rest · Maintainers:
Sven Peter, Janne Grunau, Linus Torvalds
From: Hector Martin <redacted> Shutting these down breaks dwc3 init done by the firmware. We probably never want to do this anyway. The initialisation done in the ATC phy driver is not sufficient to bring dwc3 back up after these power-domains were shutdown for example after suspend to idle. Signed-off-by: Hector Martin <redacted> Signed-off-by: Sven Peter <sven@kernel.org> --- arch/arm64/boot/dts/apple/t8103-pmgr.dtsi | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi b/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi
index c41c57d63997a59a9fe3c88de31fddb31781398e..4bfe0d2de30ad6f975b31d443b62ef0e74b14324 100644
--- a/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi@@ -1103,6 +1103,7 @@ ps_atc0_usb_aon: power-controller@88 { #power-domain-cells = <0>; #reset-cells = <0>; label = "atc0_usb_aon"; + apple,always-on; /* Needs to stay on for dwc3 to work */ }; ps_atc1_usb_aon: power-controller@90 {
@@ -1111,6 +1112,7 @@ ps_atc1_usb_aon: power-controller@90 { #power-domain-cells = <0>; #reset-cells = <0>; label = "atc1_usb_aon"; + apple,always-on; /* Needs to stay on for dwc3 to work */ }; ps_atc0_usb: power-controller@98 {
--
2.34.1