On Tuesday, November 25, 2025 9:05 PM Svyatoslav Ryhel wrote:
> Add External Memory Controller node to the device-tree.
>
> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
> ---
> arch/arm/boot/dts/nvidia/tegra114.dtsi | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/arm/boot/dts/nvidia/tegra114.dtsi b/arch/arm/boot/dts/nvidia/tegra114.dtsi
> index ef0618e9eec1..a920ad041c14 100644
> --- a/arch/arm/boot/dts/nvidia/tegra114.dtsi
> +++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi
> @@ -259,6 +259,8 @@ tegra_car: clock@60006000 {
> reg = <0x60006000 0x1000>;
> #clock-cells = <1>;
> #reset-cells = <1>;
> +
> + nvidia,external-memory-controller = <&emc>;
> };
>
> flow-controller@60007000 {
> @@ -655,6 +657,16 @@ mc: memory-controller@70019000 {
> #iommu-cells = <1>;
> };
>
> + emc: external-memory-controller@7001b000 {
> + compatible = "nvidia,tegra114-emc";
> + reg = <0x7001b000 0x1000>;
The TRM says that the aperture is 2K in size. Otherwise LGTM.
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
> + interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&tegra_car TEGRA114_CLK_EMC>;
> + clock-names = "emc";
> +
> + nvidia,memory-controller = <&mc>;
> + };
> +
> hda@70030000 {
> compatible = "nvidia,tegra114-hda", "nvidia,tegra30-hda";
> reg = <0x70030000 0x10000>;
>