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Documentation, dt, socfpga: Add Altera Arria10 L2 cache binding 

Add the device tree bindings needed to support the Altera L2 cache on
the Arria10 chip. Since all the peripherals share IRQs, the IRQ fields
are now in the ecc_manager.

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: dinguyen@opensource.altera.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux@arm.linux.org.uk
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1458576106-24505-7-git-send-email-tthayer@opensource.altera.com
Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Thor Thayer 2016-03-21 11:01:43 -05:00 committed by Borislav Petkov
parent 811fce4f2a
commit 8b39ab7290
1 changed files with 40 additions and 0 deletions
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40
Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt
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@ -3,6 +3,7 @@ This driver uses the EDAC framework to implement the SOCFPGA ECC Manager.
The ECC Manager counts and corrects single bit errors and counts/handles The ECC Manager counts and corrects single bit errors and counts/handles
double bit errors which are uncorrectable. double bit errors which are uncorrectable.
Cyclone5 and Arria5 ECC Manager
Required Properties: Required Properties:
- compatible : Should be "altr,socfpga-ecc-manager" - compatible : Should be "altr,socfpga-ecc-manager"
- #address-cells: must be 1 - #address-cells: must be 1
@ -47,3 +48,42 @@ Example:
interrupts = <0 178 1>, <0 179 1>; interrupts = <0 178 1>, <0 179 1>;
}; };
}; };
Arria10 SoCFPGA ECC Manager
The Arria10 SoC ECC Manager handles the IRQs for each peripheral
in a shared register instead of individual IRQs like the Cyclone5
and Arria5. Therefore the device tree is different as well.
Required Properties:
- compatible : Should be "altr,socfpga-a10-ecc-manager"
- altr,sysgr-syscon : phandle to Arria10 System Manager Block
containing the ECC manager registers.
- #address-cells: must be 1
- #size-cells: must be 1
- interrupts : Should be single bit error interrupt, then double bit error
interrupt. Note the rising edge type.
- ranges : standard definition, should translate from local addresses
Subcomponents:
L2 Cache ECC
Required Properties:
- compatible : Should be "altr,socfpga-a10-l2-ecc"
- reg : Address and size for ECC error interrupt clear registers.
Example:
eccmgr: eccmgr@ffd06000 {
compatible = "altr,socfpga-a10-ecc-manager";
altr,sysmgr-syscon = <&sysmgr>;
#address-cells = <1>;
#size-cells = <1>;
interrupts = <0 2 IRQ_TYPE_LEVEL_HIGH>,
<0 0 IRQ_TYPE_LEVEL_HIGH>;
ranges;
l2-ecc@ffd06010 {
compatible = "altr,socfpga-a10-l2-ecc";
reg = <0xffd06010 0x4>;
};
};