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gpiolib: of: add quirk for phy reset polarity for Freescale Ethernet

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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: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Dmitry Torokhov 2022-10-17 22:41:10 -07:00 committed by Bartosz Golaszewski
parent e3186e3692
commit b02c85c945
1 changed files with 27 additions and 0 deletions
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27
drivers/gpio/gpiolib-of.c
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@ -231,6 +231,33 @@ static void of_gpio_flags_quirks(const struct device_node *np,
!strcmp(propname, "snps,reset-gpio") && !strcmp(propname, "snps,reset-gpio") &&
of_property_read_bool(np, "snps,reset-active-low")) of_property_read_bool(np, "snps,reset-active-low"))
*flags |= OF_GPIO_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);
}
}
} }
/** /**