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| author | Samuel Holland <samuel@sholland.org> | 2020-04-26 11:20:32 -0500 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2020-05-11 17:28:02 -0500 |
| commit | c54030b191142ac40250091cb890bcd78497a35b (patch) | |
| tree | 23e09623e146f59205f4e216941f8618fa3e6139 /Documentation/devicetree | |
| parent | 0b7140098667b3b50b8c5431c92ea94c0f9a00bd (diff) | |
dt-bindings: timer: Document allwinner,erratum-unknown1 property
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>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/timer/arm,arch_timer.yaml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml index 135186f83925..2c75105c1398 100644 --- a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml +++ b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml @@ -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 |