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Commit 786a9ab1 authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Sekhar Nori
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gpio: davinci: restore a way to manually specify the GPIO base 



Commit 587f7a69 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the network support in legacy boot
mode for da850-evm since we can no longer request the MDIO clock GPIO.

Other boards may be broken too, which I haven't tested.

The problem is in the fact that most board files still use the legacy
GPIO API where lines are requested by numbers rather than descriptors.

While this should be fixed eventually, in order to unbreak the board
for now - provide a way to manually specify the GPIO base in platform
data.

Fixes: 587f7a69 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent adcf60ce

drivers/gpio/gpio-davinci.c

+1 −1
Original line number Diff line number Diff line
@@ -258,7 +258,7 @@ static int davinci_gpio_probe(struct platform_device *pdev) 
	chips->chip.set = davinci_gpio_set;



	chips->chip.ngpio = ngpio;

	chips->chip.base = -1;

	chips->chip.base = pdata->no_auto_base ? pdata->base : -1;



#ifdef CONFIG_OF_GPIO

	chips->chip.of_gpio_n_cells = 2;

include/linux/platform_data/gpio-davinci.h

+2 −0
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ 
#define __DAVINCI_GPIO_PLATFORM_H



struct davinci_gpio_platform_data {

	bool	no_auto_base;

	u32	base;

	u32	ngpio;

	u32	gpio_unbanked;

};