[PATCH] arm64: dts: rockchip: rk3588: add msi-map for pcie3x4_ep

[Niklas Cassel]

Support for msi-map in the pci-ep device tree binding was added in
commit a6aed6b9c79e ("dt-bindings: PCI: pci-ep: Add support for iommu-map
and msi-map").

The PCI endpoint doorbell feature was added in commit 1c3b002c6bf6 ("PCI:
endpoint: Add RC-to-EP doorbell support using platform MSI controller").

The PCI endpoint doorbell feature requires:
-An interrupt controller that implements GIC interrupt translation
 services (ITS).
-msi-map being defined in the pcie endpoint device tree node.
-CONFIG_PCI_ENDPOINT_MSI_DOORBELL being enabled.

Add msi-map to the pcie3x4_ep device tree node.

With this, the pci endpoint kselftest doorbell test case passes:
 # pci_endpoint_test -r pcie_ep_doorbell.DOORBELL_TEST
 TAP version 13
 1..1
 # Starting 1 tests from 1 test cases.
 #  RUN           pcie_ep_doorbell.DOORBELL_TEST ...
 #            OK  pcie_ep_doorbell.DOORBELL_TEST
 ok 1 pcie_ep_doorbell.DOORBELL_TEST
 # PASSED: 1 / 1 tests passed.

Cc: Frank Li <Frank.Li at nxp.com>
Signed-off-by: Niklas Cassel <cassel at kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3588-extra.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-extra.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-extra.dtsi
index 90414486e466f..c0121aea791d7 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-extra.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-extra.dtsi
@@ -389,6 +389,7 @@ pcie3x4_ep: pcie-ep at fe150000 {
 		interrupt-names = "sys", "pmc", "msg", "legacy", "err",
 				  "dma0", "dma1", "dma2", "dma3";
 		max-link-speed = <3>;
+		msi-map = <0x0000 &its1 0x0000 0x1000>;
 		num-lanes = <4>;
 		phys = <&pcie30phy>;
 		phy-names = "pcie-phy";
-- 
2.51.0