arm64: dts: qcom: sm8650: Fix the msi-map entries

While adding the GIC ITS MSI support, it was found that the msi-map entries
needed to be swapped to receive MSIs from the endpoint.

But later it was identified that the swapping was needed due to a bug in
the Qualcomm PCIe controller driver. And since the bug is now fixed with
commit bf79e33cdd89 ("PCI: qcom: Enable BDF to SID translation properly"),
let's fix the msi-map entries also to reflect the actual mapping in the
hardware.

Fixes: a33a532b3b1e ("arm64: dts: qcom: sm8650: Use GIC-ITS for PCIe0 and PCIe1")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240318-pci-bdf-sid-fix-v1-3-acca6c5d9cf1@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index ba72d8f3842073fd481926009ce37075894dc8c8..eb117866e59ff861bf8a41827a44429e172d6010 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -2274,9 +2274,8 @@
                        interrupt-map-mask = <0 0 0 0x7>;
                        #interrupt-cells = <1>;
 
-                       /* Entries are reversed due to the unusual ITS DeviceID encoding */
-                       msi-map = <0x0 &gic_its 0x1401 0x1>,
-                                 <0x100 &gic_its 0x1400 0x1>;
+                       msi-map = <0x0 &gic_its 0x1400 0x1>,
+                                 <0x100 &gic_its 0x1401 0x1>;
                        msi-map-mask = <0xff00>;
 
                        linux,pci-domain = <0>;
@@ -2402,9 +2401,8 @@
                        interrupt-map-mask = <0 0 0 0x7>;
                        #interrupt-cells = <1>;
 
-                       /* Entries are reversed due to the unusual ITS DeviceID encoding */
-                       msi-map = <0x0 &gic_its 0x1481 0x1>,
-                                 <0x100 &gic_its 0x1480 0x1>;
+                       msi-map = <0x0 &gic_its 0x1480 0x1>,
+                                 <0x100 &gic_its 0x1481 0x1>;
                        msi-map-mask = <0xff00>;
 
                        linux,pci-domain = <1>;