[PATCH] clocksource/drivers/arm_arch_timer: limit XGene-1 workaround

Catalin Marinas catalin.marinas at arm.com
Wed Oct 18 03:15:07 PDT 2023


On Mon, 16 Oct 2023 16:31:27 +0100, Andre Przywara wrote:
> The AppliedMicro XGene-1 CPU has an erratum where the timer condition
> would only consider TVAL, not CVAL. We currently apply a workaround when
> seeing the PartNum field of MIDR_EL1 being 0x000, under the assumption
> that this would match only the XGene-1 CPU model.
> However even the Ampere eMAG (aka XGene-3) uses that same part number, and
> only differs in the "Variant" and "Revision" fields: XGene-1's MIDR is
> 0x500f0000, our eMAG reports 0x503f0002. Experiments show the latter
> doesn't show the faulty behaviour.
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] clocksource/drivers/arm_arch_timer: limit XGene-1 workaround
      https://git.kernel.org/arm64/c/851354cbd12b

-- 
Catalin




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