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4 Commits

Author SHA1 Message Date
Claudiu Beznea
aad018aacb dt-bindings: pinctrl: at91-pio4: add slew-rate 
Document slew-rate DT binding for SAMA7G5.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1611747945-29960-2-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2021-02-12 13:44:36 +01:00
Eugen Hristev
1e871d0c0b dt-bindings: pinctrl: at91-pio4: add microchip,sama7g5 
Add compatible string for microchip sama7g5 SoC.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200917131257.273882-1-eugen.hristev@microchip.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2020-09-29 15:28:00 +02:00
Ludovic Desroches
ff10e353a4 pinctrl: at91-pio4: add support for drive strength 
Add support for the drive strength configuration. Usually, this value is
expressed in mA. Since the numeric value depends on VDDIOP voltage, a
value we can't retrieve at runtime, the controller uses low, medium and
high to define the drive strength.

The PIO controller accepts two values for the low drive configuration: 0
and 1. Most of the time, we don't care about the drive strength. So we
keep the default value which is 0. The drive strength is advertised
through the sysfs only when it has been explicitly set in the device
tree i.e. if its value is different from 0.

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2018-07-16 14:46:11 +02:00
Ludovic Desroches
56d7942224 pinctrl: dt-binding: Add DT binding documentation for Atmel PIO4 
Add documentation for the Atmel PIO4 controller introduced with SAMA5D2
chip family.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2015-09-21 11:23:08 -07:00