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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-10-18 08:41:10 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2022-10-20 14:57:43 +0300 |
| commit | b02c85c9458cdd15e2c43413d7d2541a468cde57 (patch) | |
| tree | 457aebb9333009dd707302b8be736a3598da2fa1 /drivers/gpio/gpiolib-of.c | |
| parent | e3186e36925fc18384492491ebcf3da749780a30 (diff) | |
| download | linux-b02c85c9458cdd15e2c43413d7d2541a468cde57.tar.xz | |
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: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib-of.c')
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 6faf0dc7bc31..c2a55ffb2b20 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -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); + } + } } /** |