From: Thierry Reding <treding@nvidia.com>
Date: Wed, 9 Jul 2025 23:14:00 +0000 (+0200)
Subject: arm64: tegra: Add memory controller on Tegra264
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7117911e13cf5343d0f160507719afd5c25b31c;p=thirdparty%2Flinux.git

arm64: tegra: Add memory controller on Tegra264

Link: https://lore.kernel.org/r/20250709231401.3767130-4-thierry.reding@gmail.com
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/arch/arm64/boot/dts/nvidia/tegra264.dtsi b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
index 0c9e4809b3108..62c87a387b14f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
@@ -3,6 +3,7 @@
 #include <dt-bindings/clock/nvidia,tegra264.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/mailbox/tegra186-hsp.h>
+#include <dt-bindings/memory/nvidia,tegra264.h>
 #include <dt-bindings/reset/nvidia,tegra264.h>
 
 / {
@@ -196,6 +197,58 @@
 			dma-coherent;
 		};
 
+		mc: memory-controller@8020000 {
+			compatible = "nvidia,tegra264-mc";
+			reg = <0x00 0x8020000 0x0 0x20000>, /* MC broadcast */
+			      <0x00 0x8040000 0x0 0x20000>, /* MC  0 */
+			      <0x00 0x8060000 0x0 0x20000>, /* MC  1 */
+			      <0x00 0x8080000 0x0 0x20000>, /* MC  2 */
+			      <0x00 0x80a0000 0x0 0x20000>, /* MC  3 */
+			      <0x00 0x80c0000 0x0 0x20000>, /* MC  4 */
+			      <0x00 0x80e0000 0x0 0x20000>, /* MC  5 */
+			      <0x00 0x8100000 0x0 0x20000>, /* MC  6 */
+			      <0x00 0x8120000 0x0 0x20000>, /* MC  7 */
+			      <0x00 0x8140000 0x0 0x20000>, /* MC  8 */
+			      <0x00 0x8160000 0x0 0x20000>, /* MC  9 */
+			      <0x00 0x8180000 0x0 0x20000>, /* MC 10 */
+			      <0x00 0x81a0000 0x0 0x20000>, /* MC 11 */
+			      <0x00 0x81c0000 0x0 0x20000>, /* MC 12 */
+			      <0x00 0x81e0000 0x0 0x20000>, /* MC 13 */
+			      <0x00 0x8200000 0x0 0x20000>, /* MC 14 */
+			      <0x00 0x8220000 0x0 0x20000>; /* MC 15 */
+			reg-names = "broadcast", "ch0", "ch1", "ch2", "ch3",
+				    "ch4", "ch5", "ch6", "ch7", "ch8", "ch9",
+				    "ch10", "ch11", "ch12", "ch13", "ch14",
+				    "ch15";
+			interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 255 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 402 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 694 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 903 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 401 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>;
+			#interconnect-cells = <1>;
+
+			#address-cells = <2>;
+			#size-cells = <2>;
+
+			/* limit the DMA range for memory clients to [39:0] */
+			dma-ranges = <0x0 0x0 0x0 0x0 0x100 0x0>;
+
+			emc: external-memory-controller@8800000 {
+				compatible = "nvidia,tegra264-emc";
+				reg = <0x00 0x8800000 0x0 0x20000>,
+				      <0x00 0x8890000 0x0 0x20000>;
+				interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&bpmp TEGRA264_CLK_EMC>;
+				clock-names = "emc";
+
+				#interconnect-cells = <0>;
+				nvidia,bpmp = <&bpmp>;
+			};
+		};
+
 		smmu0: iommu@a000000 {
 			compatible = "arm,smmu-v3";
 			reg = <0x00 0xa000000 0x0 0x200000>;