diff options
| -rw-r--r-- | arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 4 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/nvidia/tegra194.dtsi | 43 |
2 files changed, 47 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi index c7f2a20e6b02..bdd33ff4e324 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi @@ -48,6 +48,10 @@ }; }; + memory-controller@2c00000 { + status = "okay"; + }; + serial@3110000 { status = "okay"; }; diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi index 11220d97adb8..96dd0d7a9dde 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi @@ -7,6 +7,7 @@ #include <dt-bindings/power/tegra194-powergate.h> #include <dt-bindings/reset/tegra194-reset.h> #include <dt-bindings/thermal/tegra194-bpmp-thermal.h> +#include <dt-bindings/memory/tegra194-mc.h> / { compatible = "nvidia,tegra194"; @@ -164,6 +165,48 @@ }; }; + mc: memory-controller@2c00000 { + compatible = "nvidia,tegra194-mc"; + reg = <0x02c00000 0x100000>, + <0x02b80000 0x040000>, + <0x01700000 0x100000>; + status = "disabled"; + + #address-cells = <2>; + #size-cells = <2>; + + ranges = <0x01700000 0x0 0x01700000 0x0 0x100000>, + <0x02b80000 0x0 0x02b80000 0x0 0x040000>, + <0x02c00000 0x0 0x02c00000 0x0 0x100000>; + + /* + * Bit 39 of addresses passing through the memory + * controller selects the XBAR format used when memory + * is accessed. This is used to transparently access + * memory in the XBAR format used by the discrete GPU + * (bit 39 set) or Tegra (bit 39 clear). + * + * As a consequence, the operating system must ensure + * that bit 39 is never used implicitly, for example + * via an I/O virtual address mapping of an IOMMU. If + * devices require access to the XBAR switch, their + * drivers must set this bit explicitly. + * + * Limit the DMA range for memory clients to [38:0]. + */ + dma-ranges = <0x0 0x0 0x0 0x80 0x0>; + + emc: external-memory-controller@2c60000 { + compatible = "nvidia,tegra194-emc"; + reg = <0x0 0x02c60000 0x0 0x90000>, + <0x0 0x01780000 0x0 0x80000>; + clocks = <&bpmp TEGRA194_CLK_EMC>; + clock-names = "emc"; + + nvidia,bpmp = <&bpmp>; + }; + }; + uarta: serial@3100000 { compatible = "nvidia,tegra194-uart", "nvidia,tegra20-uart"; reg = <0x03100000 0x40>; |