[PATCH v4 1/5] ARM: tegra: Add device tree node to describe IRAM

[Dmitry Osipenko]

From: Vladimir Zapolskiy <vz@xxxxxxxxx>

All Tegra SoCs contain 256KiB IRAM, which is used to store CPU resume code
and by hardware engines like a video decoder.

Signed-off-by: Vladimir Zapolskiy <vz@xxxxxxxxx>
---
 arch/arm/boot/dts/tegra114.dtsi | 8 ++++++++
 arch/arm/boot/dts/tegra124.dtsi | 8 ++++++++
 arch/arm/boot/dts/tegra20.dtsi  | 8 ++++++++
 arch/arm/boot/dts/tegra30.dtsi  | 8 ++++++++
 4 files changed, 32 insertions(+)

diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index 8932ea3afd5f..13f6087790c8 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/arch/arm/boot/dts/tegra114.dtsi
@@ -10,6 +10,14 @@
 	compatible = "nvidia,tegra114";
 	interrupt-parent = <&lic>;
 
+	iram@40000000 {
+		compatible = "mmio-sram";
+		reg = <0x40000000 0x40000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x40000000 0x40000>;
+	};
+
 	host1x@50000000 {
 		compatible = "nvidia,tegra114-host1x", "simple-bus";
 		reg = <0x50000000 0x00028000>;
diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index 8baf00b89efb..a3585ed82646 100644
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/arch/arm/boot/dts/tegra124.dtsi
@@ -14,6 +14,14 @@
 	#address-cells = <2>;
 	#size-cells = <2>;
 
+	iram@40000000 {
+		compatible = "mmio-sram";
+		reg = <0x0 0x40000000 0x0 0x40000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x0 0x40000000 0x40000>;
+	};
+
 	pcie@1003000 {
 		compatible = "nvidia,tegra124-pcie";
 		device_type = "pci";
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 7c85f97f72ea..aaf32f96f1e8 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -9,6 +9,14 @@
 	compatible = "nvidia,tegra20";
 	interrupt-parent = <&lic>;
 
+	iram@40000000 {
+		compatible = "mmio-sram";
+		reg = <0x40000000 0x40000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x40000000 0x40000>;
+	};
+
 	host1x@50000000 {
 		compatible = "nvidia,tegra20-host1x", "simple-bus";
 		reg = <0x50000000 0x00024000>;
diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index 13960fda7471..3b447c64bf69 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -10,6 +10,14 @@
 	compatible = "nvidia,tegra30";
 	interrupt-parent = <&lic>;
 
+	iram@40000000 {
+		compatible = "mmio-sram";
+		reg = <0x40000000 0x40000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x40000000 0x40000>;
+	};
+
 	pcie@3000 {
 		compatible = "nvidia,tegra30-pcie";
 		device_type = "pci";
-- 
2.14.2