Enable ECC using device tree #15
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Instead of configuring ECC based on the build config, use a device tree
property to selectively enable ECC at runtime.
There are two properties:
aspeed,ecc-enabled;
aspeed,ecc-size-mb = "512";
The enabled property is a boolean that enables ECC if it is present.
The size is the number of MB that should be covered by ECC. Setting it
to zero, or omitting it, defaults the ECC size to "auto detect".
edac: sdram@1e6e0000 {
compatible = "aspeed,ast2600-sdram-edac";
reg = <0x1e6e0000 0x174>;
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
aspeed,ecc-enabled;
aspeed,ecc-size-mb = "512";
};
Signed-off-by: Joel Stanley <[email protected]>
Reviewed-by: Andrew Jeffery <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Always build the code now that it is enabled by device tree. Signed-off-by: Joel Stanley <[email protected]> Reviewed-by: Andrew Jeffery <[email protected]> Link: https://lore.kernel.org/r/[email protected]
Enable ECC to cover the entire DRAM by not setting the size property. Signed-off-by: Joel Stanley <[email protected]> Reviewed-by: Andrew Jeffery <[email protected]> Link: https://lore.kernel.org/r/[email protected]
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Please consider merging these changes. This allows us to have one u-boot configuration for all machines, and enable ECC depending on a device tree property. An example is given with the p10bmc machine.