From: Ding Tianhong Date: Mon, 6 Feb 2017 16:47:39 +0000 (+0000) Subject: clocksource/drivers/arm_arch_timer: Add dt binding for hisilicon-161010101 erratum X-Git-Tag: v4.11-rc1~177^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=729e55225b1f6225ee7a2a358d5141a3264627c4;p=platform%2Fkernel%2Flinux-exynos.git clocksource/drivers/arm_arch_timer: Add dt binding for hisilicon-161010101 erratum This erratum describes a bug in logic outside the core, so MIDR can't be used to identify its presence, and reading an SoC-specific revision register from common arch timer code would be awkward. So, describe it in the device tree. Signed-off-by: Ding Tianhong Acked-by: Rob Herring Signed-off-by: Mark Rutland Signed-off-by: Daniel Lezcano --- diff --git a/Documentation/devicetree/bindings/arm/arch_timer.txt b/Documentation/devicetree/bindings/arm/arch_timer.txt index ad440a2..e926aea 100644 --- a/Documentation/devicetree/bindings/arm/arch_timer.txt +++ b/Documentation/devicetree/bindings/arm/arch_timer.txt @@ -31,6 +31,12 @@ to deliver its interrupts via SPIs. This also affects writes to the tval register, due to the implicit counter read. +- hisilicon,erratum-161010101 : A boolean property. Indicates the + presence of Hisilicon erratum 161010101, which says that reading the + counters is unreliable in some cases, and reads may return a value 32 + beyond the correct value. This also affects writes to the tval + registers, due to the implicit counter read. + ** Optional properties: - arm,cpu-registers-not-fw-configured : Firmware does not initialize