Thread (4 messages) 4 messages, 2 authors, 2021-08-31

[PATCH v2 2/2] ARM: dts: bcm2711-rpi-4-b: Fix usb's unit address

From: Nicolas Saenz Julienne <hidden>
Date: 2021-08-31 12:59:12
Also in: linux-arm-kernel, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

The unit address is supposed to represent '<device>,<function>'. Which
are both 0 for RPi4b's XHCI controller. On top of that although
OpenFirmware states bus number goes in the high part of the last reg
parameter, FDT doesn't seem to care for it[1], so remove it.

[1] https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210830103909.323356-1-nsaenzju@redhat.com/#24414633
Fixes: 258f92d2f840 ("ARM: dts: bcm2711: Add reset controller to xHCI node")
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Nicolas Saenz Julienne <redacted>
---

Chages since v1:
 - Add patch as per robh suggestion

 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 8377dc14b7b5..50530cc91876 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -225,8 +225,8 @@ pci@0,0 {
 
 		reg = <0 0 0 0 0>;
 
-		usb@1,0 {
-			reg = <0x10000 0 0 0 0>;
+		usb@0,0 {
+			reg = <0 0 0 0 0>;
 			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
 		};
 	};
-- 
2.31.1
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