diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2017-10-28 15:37:17 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-11-08 13:49:45 +0100 |
| commit | e0e1e39de490a2d9b8a173363ccf2415ddada871 (patch) | |
| tree | 619523b63681964806e20a87e870423f846c359b /Documentation/devicetree/bindings/pinctrl | |
| parent | 30ac0d3b0702ea3b6ad19b0c1452831526fe03d5 (diff) | |
pinctrl: Add skew-delay pin config and bindings
Some pin controllers (such as the Gemini) can control the
expected clock skew and output delay on certain pins with a
sub-nanosecond granularity. This is typically done by shunting
in a number of double inverters in front of or behind the pin.
Make it possible to configure this with a generic binding.
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl')
| -rw-r--r-- | Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt index 4483cc31e531..ad9bbbba36e9 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt @@ -271,6 +271,10 @@ output-high - set the pin to output mode with high level sleep-hardware-state - indicate this is sleep related state which will be programmed into the registers for the sleep state. slew-rate - set the slew rate +skew-delay - this affects the expected clock skew on input pins + and the delay before latching a value to an output + pin. Typically indicates how many double-inverters are + used to delay the signal. For example: |