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Message-ID: <20160123023513.GA2081@rob-hp-laptop>
Date: Fri, 22 Jan 2016 20:35:13 -0600
From: Rob Herring <robh@...nel.org>
To: tthayer@...nsource.altera.com
Cc: bp@...en8.de, dougthompson@...ssion.com, m.chehab@...sung.com,
pawel.moll@....com, mark.rutland@....com,
ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
linux@....linux.org.uk, dinguyen@...nsource.altera.com,
grant.likely@...aro.org, devicetree@...r.kernel.org,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
tthayer.linux@...il.com, linux-arm-kernel@...ts.infradead.org,
linux-edac@...r.kernel.org
Subject: Re: [PATCHv8 2/4] ARM: dts: Add Altera L2 Cache and OCRAM EDAC
entries
On Thu, Jan 21, 2016 at 11:34:26AM -0600, tthayer@...nsource.altera.com wrote:
> From: Thor Thayer <tthayer@...nsource.altera.com>
>
> Adding the device tree entries and bindings needed to support
> the Altera L2 cache and On-Chip RAM EDAC. This patch relies upon
> an earlier patch to declare and setup On-chip RAM properly.
> http://www.spinics.net/lists/devicetree/msg51117.html
>
> Signed-off-by: Thor Thayer <tthayer@...nsource.altera.com>
> Signed-off-by: Dinh Nguyen <dinguyen@...nsource.altera.com>
> ---
> v8: Fix node names to include chip family and use ecc manager
> to better describe the driver. Rename socfpga-edac.txt to
> socfpga-eccmgr.txt.
> v7: No Change
> v6: Change to nested EDAC device nodes based on community
> feedback. Remove L2 syscon. Use consolidated binding.
> v3-5: No Change
> v2: Remove OCRAM declaration and reference prior patch.
> ---
> .../bindings/arm/altera/socfpga-eccmgr.txt | 49 ++++++++++++++++++++
> arch/arm/boot/dts/socfpga.dtsi | 20 ++++++++
> 2 files changed, 69 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt
A couple of nits, otherwise:
Acked-by: Rob Herring <robh@...nel.org>
>
> diff --git a/Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt b/Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt
> new file mode 100644
> index 0000000..4f45690
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt
> @@ -0,0 +1,49 @@
> +Altera SoCFPGA ECC Manager
> +This driver uses the EDAC framework to implement the SOCFPGA ECC Manager.
> +The ECC Manager counts and corrects single bit errors and counts/handles
> +double bit errors which are uncorrectable.
> +
> +Required Properties:
> +- compatible : Should be "altr,socfpga-ecc-manager"
> +- #address-cells: must be 1
> +- #size-cells: must be 1
> +- ranges : standard definition, should translate from local addresses
> +
> +Subcomponents:
> +
> +L2 Cache ECC
> +Required Properties:
> +- compatible : Should be "altr,socfpga-l2-ecc"
> +- reg : Address and size for ECC error interrupt clear registers.
> +- interrupts : Should be single bit error interrupt, then double bit error
> + interrupt. Note the rising edge type.
> +
> +On Chip RAM ECC
> +Required Properties:
> +- compatible : Should be "altr,socfpga-ocram-ecc"
> +- reg : Address and size for ECC error interrupt clear registers.
> +- iram : phandle to On-Chip RAM definition.
> +- interrupts : Should be single bit error interrupt, then double bit error
> + interrupt. Note the rising edge type.
> +
> +Example:
> +
> + eccmgr: eccmgr@...fd08140 {
drop the '0x'
> + compatible = "altr,socfpga-ecc-manager";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + l2-ecc@...08140 {
> + compatible = "altr,socfpga-l2-ecc";
> + reg = <0xffd08140 0x4>;
> + interrupts = <0 36 1>, <0 37 1>;
> + };
> +
> + ocram-ecc@...08144 {
> + compatible = "altr,socfpga-ocram-ecc";
> + reg = <0xffd08144 0x4>;
> + iram = <&ocram>;
> + interrupts = <0 178 1>, <0 179 1>;
> + };
> + };
> diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi
> index 39c470e..9bb383e 100644
> --- a/arch/arm/boot/dts/socfpga.dtsi
> +++ b/arch/arm/boot/dts/socfpga.dtsi
> @@ -656,6 +656,26 @@
> status = "disabled";
> };
>
> + eccmgr: eccmgr@...fd08140 {
and here.
> + compatible = "altr,socfpga-ecc-manager";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + l2-ecc@...08140 {
> + compatible = "altr,socfpga-l2-ecc";
> + reg = <0xffd08140 0x4>;
> + interrupts = <0 36 1>, <0 37 1>;
> + };
> +
> + ocram-ecc@...08144 {
> + compatible = "altr,socfpga-ocram-ecc";
> + reg = <0xffd08144 0x4>;
> + iram = <&ocram>;
> + interrupts = <0 178 1>, <0 179 1>;
> + };
> + };
> +
> L2: l2-cache@...ef000 {
> compatible = "arm,pl310-cache";
> reg = <0xfffef000 0x1000>;
> --
> 1.7.9.5
>
>
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> linux-arm-kernel@...ts.infradead.org
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