Files
operating-system/buildroot-external/board/raspberrypi/patches/linux/0002-ARM-dts-bcm2711-Add-firmware-usb-reset-node.patch
Stefan Agner 78152db78f Add boot from USB mass storage device support for RPi 4 (#746) (#776)
* Backport USB PCIe/XHCI patches to U-Boot 2020.07

Backport relevant patches required to make PCIe/USB XHCI work.

* Backport/integrate PCIe device tree changes from upstream Linux

U-Boot uses the device tree provided by upstream Linux. Make sure the
device tree has the relevant chanages to make VL805 USB controller
reset work.

* Document RPi 4 USB mass storage support (#746)
2020-07-19 13:59:10 +02:00

39 lines
1.3 KiB
Diff

From b15414057bc9a023fc865242f499807d82933e58 Mon Sep 17 00:00:00 2001
Message-Id: <b15414057bc9a023fc865242f499807d82933e58.1595152741.git.stefan@agner.ch>
In-Reply-To: <a9f92163e6c07e5c6f57f00f4931098e0e1ee826.1595152741.git.stefan@agner.ch>
References: <a9f92163e6c07e5c6f57f00f4931098e0e1ee826.1595152741.git.stefan@agner.ch>
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Mon, 29 Jun 2020 18:18:39 +0200
Subject: [PATCH 2/4] ARM: dts: bcm2711: Add firmware usb reset node
Now that the reset driver exposing Raspberry Pi 4's firmware based USB
reset routine is available, let's add the device tree node exposing it.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
[backport for RPi 4.19 kernel]
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 42259dbf3919..ec0b3bb64de8 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -80,6 +80,11 @@
"";
status = "okay";
};
+
+ reset: reset {
+ compatible = "raspberrypi,firmware-reset";
+ #reset-cells = <1>;
+ };
};
&uart0 {
--
2.27.0