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-rw-r--r--dts/src/arm64/hisilicon/hip07.dtsi33
1 files changed, 33 insertions, 0 deletions
diff --git a/dts/src/arm64/hisilicon/hip07.dtsi b/dts/src/arm64/hisilicon/hip07.dtsi
index 2c01a21..0600a6a 100644
--- a/dts/src/arm64/hisilicon/hip07.dtsi
+++ b/dts/src/arm64/hisilicon/hip07.dtsi
@@ -1083,6 +1083,31 @@
};
};
+ /**
+ * HiSilicon erratum 161010801: This describes the limitation
+ * of HiSilicon platforms hip06/hip07 to support the SMMUv3
+ * mappings for PCIe MSI transactions.
+ * PCIe controller on these platforms has to differentiate the
+ * MSI payload against other DMA payload and has to modify the
+ * MSI payload. This makes it difficult for these platforms to
+ * have a SMMU translation for MSI. In order to workaround this,
+ * ARM SMMUv3 driver requires a quirk to treat the MSI regions
+ * separately. Such a quirk is currently missing for DT based
+ * systems. Hence please make sure that the smmu pcie node on
+ * hip07 is disabled as this will break the PCIe functionality
+ * when iommu-map entry is used along with the PCIe node.
+ * Refer:https://www.spinics.net/lists/arm-kernel/msg602812.html
+ */
+ smmu0: smmu_pcie {
+ compatible = "arm,smmu-v3";
+ reg = <0x0 0xa0040000 0x0 0x20000>;
+ #iommu-cells = <1>;
+ dma-coherent;
+ smmu-cb-memtype = <0x0 0x1>;
+ hisilicon,broken-prefetch-cmd;
+ status = "disabled";
+ };
+
soc {
compatible = "simple-bus";
#address-cells = <2>;
@@ -1127,6 +1152,12 @@
reg = <0x0 0xc0000000 0x0 0x10000>;
};
+ dsa_cpld: dsa_cpld@78000010 {
+ compatible = "syscon";
+ reg = <0x0 0x78000010 0x0 0x100>;
+ reg-io-width = <2>;
+ };
+
pcie_subctl: pcie_subctl@a0000000 {
compatible = "hisilicon,pcie-sas-subctrl", "syscon";
reg = <0x0 0xa0000000 0x0 0x10000>;
@@ -1258,6 +1289,7 @@
port@0 {
reg = <0>;
serdes-syscon = <&serdes_ctrl>;
+ cpld-syscon = <&dsa_cpld 0x0>;
port-rst-offset = <0>;
port-mode-offset = <0>;
mc-mac-mask = [ff f0 00 00 00 00];
@@ -1267,6 +1299,7 @@
port@1 {
reg = <1>;
serdes-syscon= <&serdes_ctrl>;
+ cpld-syscon = <&dsa_cpld 0x4>;
port-rst-offset = <1>;
port-mode-offset = <1>;
mc-mac-mask = [ff f0 00 00 00 00];