Commit b02c85c9 authored by Dmitry Torokhov's avatar Dmitry Torokhov Committed by Bartosz Golaszewski
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gpiolib: of: add quirk for phy reset polarity for Freescale Ethernet 



Bindings for Freescale Fast Ethernet Controller use a separate
property "phy-reset-active-high" to specify polarity of its phy
gpio line. To allow converting the driver to gpiod API we need
to add this quirk to gpiolib.

Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent e3186e36

drivers/gpio/gpiolib-of.c

+27 −0
Original line number Diff line number Diff line
@@ -231,6 +231,33 @@ static void of_gpio_flags_quirks(const struct device_node *np, 
	    !strcmp(propname, "snps,reset-gpio") &&

	    of_property_read_bool(np, "snps,reset-active-low"))

		*flags |= OF_GPIO_ACTIVE_LOW;



	/*

	 * Freescale Fast Ethernet Controller uses a separate property to

	 * describe polarity of the phy reset line.

	 */

	if (IS_ENABLED(CONFIG_FEC)) {

		static const char * const fec_devices[] = {

			"fsl,imx25-fec",

			"fsl,imx27-fec",

			"fsl,imx28-fec",

			"fsl,imx6q-fec",

			"fsl,mvf600-fec",

			"fsl,imx6sx-fec",

			"fsl,imx6ul-fec",

			"fsl,imx8mq-fec",

			"fsl,imx8qm-fec",

			"fsl,s32v234-fec",

			NULL

		};



		if (!strcmp(propname, "phy-reset-gpios") &&

		    of_device_compatible_match(np, fec_devices)) {

			bool active_high = of_property_read_bool(np,

						"phy-reset-active-high");

			of_gpio_quirk_polarity(np, active_high, flags);

		}

	}

}



/**