@@ -51,6 +51,12 @@ properties:
description: If present, the timer is powered through an always-on power
domain, therefore it never loses context.
+ allwinner,erratum-unknown1:
+ type: boolean
+ description: Indicates the presence of an erratum found in Allwinner SoCs,
+ where reading certain values from the counter is unreliable. This also
+ affects writes to the tval register, due to the implicit counter read.
+
fsl,erratum-a008585:
type: boolean
description: Indicates the presence of QorIQ erratum A-008585, which says
This arch_timer property was added in commit c950ca8c35ee ("clocksource/drivers/arch_timer: Workaround for Allwinner A64 timer instability") but I omitted the device tree binding documentation. Now `make dtbs_check` prints the following warning for all A64 boards: timer: 'allwinner,erratum-unknown1' does not match any of the regexes: 'pinctrl-[0-9]+' Resolve this by documenting the erratum property. Signed-off-by: Samuel Holland <samuel@sholland.org> --- Documentation/devicetree/bindings/timer/arm,arch_timer.yaml | 6 ++++++ 1 file changed, 6 insertions(+)