On 2/8/2023 5:07 PM, Thierry Reding wrote:
On Wed, Feb 08, 2023 at 04:46:44PM +0530, Manikanta Maddireddy wrote:
Add PCIe port node under the PCIe controller-1 device tree node to support
PCIe WAKE# interrupt for WiFi.
Signed-off-by: Manikanta Maddireddy <mmaddireddy@xxxxxxxxxx>
---
Changes in v14:
New patch in the series to support PCIe WAKE# in NVIDIA Jetson AGX Orin.
.../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 8a9747855d6b..9c89be263141 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -2147,6 +2147,17 @@ pcie@14100000 {
phys = <&p2u_hsio_3>;
phy-names = "p2u-0";
+
+ pci@0,0 {
+ reg = <0x0000 0 0 0 0>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+
+ interrupt-parent = <&gpio>;
+ interrupts = <TEGRA234_MAIN_GPIO(L, 2) IRQ_TYPE_LEVEL_LOW>;
+ interrupt-names = "wakeup";
+ };
Don't we need to wire this to the PMC interrupt controller and the wake
event corresponding to the L2 GPIO? Otherwise none of the wake logic in
PMC will get invoked.
Thierry
PCIe wake is gpio based not pmc, only wake support is provided by PMC
controller.
I verified this patch and able to wake up Tegra from suspend.
Petlozu, correct me if my understanding is wrong.
Manikanta
