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Message-ID: <1390952176-30402-5-git-send-email-pdeschrijver@nvidia.com>
Date: Wed, 29 Jan 2014 01:36:14 +0200
From: Peter De Schrijver <pdeschrijver@...dia.com>
To: Peter De Schrijver <pdeschrijver@...dia.com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Rob Landley <rob@...dley.net>,
Stephen Warren <swarren@...dotorg.org>,
Thierry Reding <thierry.reding@...il.com>,
Russell King <linux@....linux.org.uk>,
<devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>
Subject: [PATCH v3 4/6] ARM: tegra: Add efuse bindings
Add efuse bindings for Tegra20, Tegra30, Tegra114 and Tegra124.
Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>
---
.../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@...0f800 {
+ 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@...0f800 {
+ compatible = "nvidia,tegra114-efuse";
+ reg = <0x7000f800 0x400>,
+ <0x70000000 0x400>;
+ clocks = <&tegra_car TEGRA114_CLK_FUSE>;
+ };
+
iommu@...19010 {
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@...0f800 {
+ compatible = "nvidia,tegra124-efuse";
+ reg = <0x7000f800 0x400>,
+ <0x70000000 0x400>;
+ clocks = <&tegra_car TEGRA124_CLK_FUSE>;
+ };
+
sdhci@...b0000 {
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@...0f800 {
+ compatible = "nvidia,tegra20-efuse";
+ reg = <0x7000F800 0x400>,
+ <0x70000000 0x400>;
+ clocks = <&tegra_car TEGRA20_CLK_FUSE>;
+ };
+
pcie-controller@...03000 {
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@...0f800 {
+ compatible = "nvidia,tegra30-efuse";
+ reg = <0x7000f800 0x400>,
+ <0x70000000 0x400>;
+ clocks = <&tegra_car TEGRA30_CLK_FUSE>;
+ };
+
ahub@...80000 {
compatible = "nvidia,tegra30-ahub";
reg = <0x70080000 0x200
--
1.7.7.rc0.72.g4b5ea.dirty
--
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