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| 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 /drivers/pinctrl | |
| parent | 30ac0d3b0702ea3b6ad19b0c1452831526fe03d5 (diff) | |
| download | linux-e0e1e39de490a2d9b8a173363ccf2415ddada871.tar.gz linux-e0e1e39de490a2d9b8a173363ccf2415ddada871.tar.bz2 linux-e0e1e39de490a2d9b8a173363ccf2415ddada871.zip | |
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 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinconf-generic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c index 8eaa25c3384f..b4f7f8a458ea 100644 --- a/drivers/pinctrl/pinconf-generic.c +++ b/drivers/pinctrl/pinconf-generic.c @@ -49,6 +49,7 @@ static const struct pin_config_item conf_items[] = { PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true), PCONFDUMP(PIN_CONFIG_SLEEP_HARDWARE_STATE, "sleep hardware state", NULL, false), PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true), + PCONFDUMP(PIN_CONFIG_SKEW_DELAY, "skew delay", NULL, true), }; static void pinconf_generic_dump_one(struct pinctrl_dev *pctldev, @@ -181,6 +182,7 @@ static const struct pinconf_generic_params dt_params[] = { { "power-source", PIN_CONFIG_POWER_SOURCE, 0 }, { "sleep-hardware-state", PIN_CONFIG_SLEEP_HARDWARE_STATE, 0 }, { "slew-rate", PIN_CONFIG_SLEW_RATE, 0 }, + { "skew-delay", PIN_CONFIG_SKEW_DELAY, 0 }, }; /** |