[PATCH 1/2] dt-bindings: PCI: amd-mdb: Add reset-gpios property to handle PCIe RP PERST#
From: Sai Krishna Musham
Date: Wed Mar 26 2025 - 00:16:41 EST
Add `reset-gpios` property to enable TCA6416 I2C GPIO expander based
handling of the PCIe PERST# signal.
Signed-off-by: Sai Krishna Musham <sai.krishna.musham@xxxxxxx>
---
Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml
index 43dc2585c237..e6117d326279 100644
--- a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml
+++ b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml
@@ -87,6 +87,7 @@ examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
soc {
#address-cells = <2>;
@@ -112,6 +113,7 @@ examples:
#size-cells = <2>;
#interrupt-cells = <1>;
device_type = "pci";
+ reset-gpios = <&tca6416_u37 7 GPIO_ACTIVE_LOW>;
pcie_intc_0: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
--
2.31.1