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arm64: tegra: Enable SMMU support for USB on Tegra194 

As of commit c7289b1c8a ("arm64: tegra: Enable SMMU support on
Tegra194"), SMMU support is enabled system-wide on Tegra194. However,
there was a bit of overlap between the SMMU enablement and the USB
support addition, so the USB device tree nodes are missing the iommus
and interconnects properties. This in turn leads to SMMU faults for
these devices, since by default the ARM SMMU will fault.

Add the iommus and interconnects properties to the XUSB and XUDC device
tree nodes to restore their functionality.

Fixes: c7289b1c8a ("arm64: tegra: Enable SMMU support on Tegra194")
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2021-07-08 12:39:32 +02:00
parent 34e0fc345a
commit c667dcd4df
1 changed files with 8 additions and 0 deletions
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8
arch/arm64/boot/dts/nvidia/tegra194.dtsi
View File

@ -948,6 +948,10 @@
<&bpmp TEGRA194_CLK_XUSB_SS>,
<&bpmp TEGRA194_CLK_XUSB_FS>;
clock-names = "dev", "ss", "ss_src", "fs_src";
interconnects = <&mc TEGRA194_MEMORY_CLIENT_XUSB_DEVR &emc>,
<&mc TEGRA194_MEMORY_CLIENT_XUSB_DEVW &emc>;
interconnect-names = "dma-mem", "write";
iommus = <&smmu TEGRA194_SID_XUSB_DEV>;
power-domains = <&bpmp TEGRA194_POWER_DOMAIN_XUSBB>,
<&bpmp TEGRA194_POWER_DOMAIN_XUSBA>;
power-domain-names = "dev", "ss";
@ -977,6 +981,10 @@
"xusb_ss", "xusb_ss_src", "xusb_hs_src",
"xusb_fs_src", "pll_u_480m", "clk_m",
"pll_e";
interconnects = <&mc TEGRA194_MEMORY_CLIENT_XUSB_HOSTR &emc>,
<&mc TEGRA194_MEMORY_CLIENT_XUSB_HOSTW &emc>;
interconnect-names = "dma-mem", "write";
iommus = <&smmu TEGRA194_SID_XUSB_HOST>;
power-domains = <&bpmp TEGRA194_POWER_DOMAIN_XUSBC>,
<&bpmp TEGRA194_POWER_DOMAIN_XUSBA>;