linux-kernel - Re: [PATCHv8 2/4] ARM: dts: Add Altera L2 Cache and OCRAM EDAC entries

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Message-ID: <56A64269.1030500@opensource.altera.com>
Date:	Mon, 25 Jan 2016 09:42:33 -0600
From:	Thor Thayer <tthayer@...nsource.altera.com>
To:	Rob Herring <robh@...nel.org>
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 01/22/2016 08:35 PM, Rob Herring wrote:
> 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>
>

Great! I will make these changes for my next version that fixes some 
coding issue. Thank you for reviewing.

>>
>> 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
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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