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arm64: tegra: Add memory controller on Tegra234

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This adds the memory controller and the embedded external memory
controller found on the Tegra234 SoC.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2021-12-13 17:21:50 +01:00
parent cc9396676c
commit eed280dfe9
1 changed files with 49 additions and 0 deletions
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49
arch/arm64/boot/dts/nvidia/tegra234.dtsi
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@ -3,6 +3,7 @@
#include <dt-bindings/clock/tegra234-clock.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/mailbox/tegra186-hsp.h>
#include <dt-bindings/memory/tegra234-mc.h>
#include <dt-bindings/reset/tegra234-reset.h>
/ {
@ -84,6 +85,54 @@
gpio-controller;
};
mc: memory-controller@2c00000 {
compatible = "nvidia,tegra234-mc";
reg = <0x02c00000 0x100000>,
<0x02b80000 0x040000>,
<0x01700000 0x100000>;
interrupts = <GIC_SPI 223 IRQ_TYPE_LEVEL_HIGH>;
#interconnect-cells = <1>;
status = "okay";
#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,tegra234-emc";
reg = <0x0 0x02c60000 0x0 0x90000>,
<0x0 0x01780000 0x0 0x80000>;
interrupts = <GIC_SPI 224 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&bpmp TEGRA234_CLK_EMC>;
clock-names = "emc";
status = "okay";
#interconnect-cells = <0>;
nvidia,bpmp = <&bpmp>;
};
};
uarta: serial@3100000 {
compatible = "nvidia,tegra234-uart", "nvidia,tegra20-uart";
reg = <0x03100000 0x10000>;