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Message-ID: <CAL_JsqKy2rMT6tuTOJGqVeuRsGHsdnJ9w-sECG5ML9Z1aRpiNg@mail.gmail.com>
Date: Wed, 29 Jan 2014 11:18:31 -0600
From: Rob Herring <robherring2@...il.com>
To: Peter De Schrijver <pdeschrijver@...dia.com>
Cc: "linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
"linux-kernel@...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" <devicetree@...r.kernel.org>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH v3 4/6] ARM: tegra: Add efuse bindings
On Tue, Jan 28, 2014 at 5:36 PM, Peter De Schrijver
<pdeschrijver@...dia.com> wrote:
> Add efuse bindings for Tegra20, Tegra30, Tegra114 and Tegra124.
>
> Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>
Acked-by: Rob Herring <robh@...nel.org>
Rob
> ---
> .../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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