arm64: arch_timer: Add workaround for hisilicon-161010101 erratum

Quoted 9 lines · Ding Tianhong

Ding Tianhong (4):
arm64: arch_timer: Add device tree binding for hisilicon-161010101
erratum
arm64: arch_timer: Introduce a generic erratum handing mechanism for

    fsl-a008585
  arm64: arch_timer: Work around Erratum Hisilicon-161010101
  arm64: arch timer: Add timer erratum property for Hip05-d02 and
    Hip06-d03

Quoted 9 lines

 Documentation/admin-guide/kernel-parameters.txt    |   9 --
 Documentation/arm64/silicon-errata.txt             |  43 +++---
 .../devicetree/bindings/arm/arch_timer.txt         |   6 +
 arch/arm64/boot/dts/hisilicon/hip05.dtsi           |   1 +
 arch/arm64/boot/dts/hisilicon/hip06.dtsi           |   1 +
 arch/arm64/include/asm/arch_timer.h                |  38 ++----
 drivers/clocksource/Kconfig                        |  18 +++
 drivers/clocksource/arm_arch_timer.c               | 150 +++++++++++++++------
 8 files changed, 171 insertions(+), 95 deletions(-)

I've picked these up (with a few local cleanups), given that some local testing, and pushed the result to a branch [1] on my git repo.

There are likely to be clashes with the arm64 tree (e.g. for silicon-errata.txt), and we're also likely to have more arch timer updates shortly for the GTDT stuff, so I think the best bet is for both arm64 and the clocksource tree to pull that branch for v4.11.

Alternatively, we could take this all through the arm64 tree, if the clocksource maintainers are happy with that.