[PATCH v3 4/6] ARM: tegra: Add efuse bindings

[Peter De Schrijver]

Add efuse bindings for Tegra20, Tegra30, Tegra114 and Tegra124.

Signed-off-by: Peter De Schrijver <pdeschrijver@xxxxxxxxxx>
---
 .../devicetree/bindings/fuse/fuse-tegra.txt        |   32 ++++++++++++++++++++
 arch/arm/boot/dts/tegra114.dtsi                    |    7 ++++
 arch/arm/boot/dts/tegra124.dtsi                    |    7 ++++
 arch/arm/boot/dts/tegra20.dtsi                     |    7 ++++
 arch/arm/boot/dts/tegra30.dtsi                     |    7 ++++
 5 files changed, 60 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/fuse/fuse-tegra.txt

diff --git a/Documentation/devicetree/bindings/fuse/fuse-tegra.txt b/Documentation/devicetree/bindings/fuse/fuse-tegra.txt
new file mode 100644
index 0000000..8a566a1
--- /dev/null
+++ b/Documentation/devicetree/bindings/fuse/fuse-tegra.txt
@@ -0,0 +1,32 @@
+NVIDIA Tegra20/Tegra30/Tegr114/Tegra124 fuse driver.
+
+Required properties:
+- compatible : should be:
+	"nvidia,tegra20-efuse"
+	"nvidia,tegra30-efuse"
+	"nvidia,tegra114-efuse"
+	"nvidia,tegra124-efuse"
+  Details:
+  nvidia,tegra20-efuse: Tegra20 requires using APB DMA to read the fuse data
+	due to a hardware bug. Tegra20 also lacks certain information which is
+	available in later generations such as fab code, lot code, wafer id,..
+  nvidia,tegra30-efuse, nvidia,tegra114-efuse and nvidia,tegra124-efuse:
+	The differences between these SoCs are the size of the efuse array,
+	the location of the spare (OEM programmable) bits and the location of
+	the speedo data.
+- reg: Should contain 2 entries: the first entry gives the physical address
+       and length of the fuse registers, the second entry gives the physical
+       address and length of the apbmisc registers. These are used to provide
+       the chipid, chip revision and strapping options.
+- clocks: Should contain a pointer to the fuse clock.
+
+Example:
+
+        fuse@7000f800 {
+                compatible = "nvidia,tegra20-efuse";
+                reg = <0x7000F800 0x400>,
+                      <0x70000000 0x400>;
+                clocks = <&tegra_car TEGRA20_CLK_FUSE>;
+        };
+
+
diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index 389e987..05ca90b 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/arch/arm/boot/dts/tegra114.dtsi
@@ -481,6 +481,13 @@
 		clock-names = "pclk", "clk32k_in";
 	};
 
+	fuse@7000f800 {
+		compatible = "nvidia,tegra114-efuse";
+		reg = <0x7000f800 0x400>,
+		      <0x70000000 0x400>;
+		clocks = <&tegra_car TEGRA114_CLK_FUSE>;
+	};
+
 	iommu@70019010 {
 		compatible = "nvidia,tegra114-smmu", "nvidia,tegra30-smmu";
 		reg = <0x70019010 0x02c
diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index ec0698a..30faa73 100644
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/arch/arm/boot/dts/tegra124.dtsi
@@ -381,6 +381,13 @@
 		clock-names = "pclk", "clk32k_in";
 	};
 
+	fuse@7000f800 {
+		compatible = "nvidia,tegra124-efuse";
+		reg = <0x7000f800 0x400>,
+		      <0x70000000 0x400>;
+		clocks = <&tegra_car TEGRA124_CLK_FUSE>;
+	};
+
 	sdhci@700b0000 {
 		compatible = "nvidia,tegra124-sdhci";
 		reg = <0x700b0000 0x200>;
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 480ecda..a1a15d7 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -541,6 +541,13 @@
 		#size-cells = <0>;
 	};
 
+	fuse@7000f800 {
+		compatible = "nvidia,tegra20-efuse";
+		reg = <0x7000F800 0x400>,
+		      <0x70000000 0x400>;
+		clocks = <&tegra_car TEGRA20_CLK_FUSE>;
+	};
+
 	pcie-controller@80003000 {
 		compatible = "nvidia,tegra20-pcie";
 		device_type = "pci";
diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index ed8e770..1ec80fa 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -623,6 +623,13 @@
 		nvidia,ahb = <&ahb>;
 	};
 
+	fuse@7000f800 {
+		compatible = "nvidia,tegra30-efuse";
+		reg = <0x7000f800 0x400>,
+		      <0x70000000 0x400>;
+		clocks = <&tegra_car TEGRA30_CLK_FUSE>;
+	};
+
 	ahub@70080000 {
 		compatible = "nvidia,tegra30-ahub";
 		reg = <0x70080000 0x200
-- 
1.7.7.rc0.72.g4b5ea.dirty

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