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@xxxxxxx>
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
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(+)
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";
--
2.26.2
