[v3,4/9] ARM: dts: bcm2711: Add reset controller to xHCI node

Message ID 20200612171334.26385-5-nsaenzjulienne@suse.de
State New
Headers show
Series
  • [v3,1/9] dt-bindings: reset: Add a binding for the RPi Firmware reset controller
Related show

Commit Message

Nicolas Saenz Julienne June 12, 2020, 5:13 p.m.
The chip is hardwired to the board's PCIe bus and needs to be properly
setup trough a firmware routine after a PCI fundamental reset. Pass the
reset controller phandle that takes care of triggering the
initialization to the relevant PCI device.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>

---

Changes since v2:
 - Use dt-bindings to access IDs

Changes since v1:
 - Update to match new binding

 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

Patch

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 0cef95058fb0..e20979013414 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -4,6 +4,8 @@ 
 #include "bcm2835-rpi.dtsi"
 #include "bcm283x-rpi-usb-peripheral.dtsi"
 
+#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
+
 / {
 	compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
 	model = "Raspberry Pi 4 Model B";
@@ -207,6 +209,13 @@  phy1: ethernet-phy@1 {
 	};
 };
 
+&pcie0 {
+	usb@1,0 {
+		reg = <0 0 0 0 0>;
+		resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
+	};
+};
+
 /* uart0 communicates with the BT module */
 &uart0 {
 	pinctrl-names = "default";