From: Thor Thayer <tthayer@xxxxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx> --- 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 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@0xffd08140 { + compatible = "altr,socfpga-ecc-manager"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + l2-ecc@ffd08140 { + compatible = "altr,socfpga-l2-ecc"; + reg = <0xffd08140 0x4>; + interrupts = <0 36 1>, <0 37 1>; + }; + + ocram-ecc@ffd08144 { + 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@0xffd08140 { + compatible = "altr,socfpga-ecc-manager"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + l2-ecc@ffd08140 { + compatible = "altr,socfpga-l2-ecc"; + reg = <0xffd08140 0x4>; + interrupts = <0 36 1>, <0 37 1>; + }; + + ocram-ecc@ffd08144 { + compatible = "altr,socfpga-ocram-ecc"; + reg = <0xffd08144 0x4>; + iram = <&ocram>; + interrupts = <0 178 1>, <0 179 1>; + }; + }; + L2: l2-cache@fffef000 { compatible = "arm,pl310-cache"; reg = <0xfffef000 0x1000>; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
