From: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx> Reading PSR register report wrong value for pins configured as output. According DS: While the GPIO direction is set to input (GPIO_GDIR = 0), a read access to GPIO_DR does not return GPIO_DR data. Instead, it returns the GPIO_PSR data, which is the corresponding input signal value. Signed-off-by: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx> --- drivers/gpio/gpio-imx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-imx.c b/drivers/gpio/gpio-imx.c index d8bcea223..a9d44d4e6 100644 --- a/drivers/gpio/gpio-imx.c +++ b/drivers/gpio/gpio-imx.c @@ -108,9 +108,9 @@ static int imx_gpio_get_value(struct gpio_chip *chip, unsigned gpio) void __iomem *base = imxgpio->base; u32 val; - val = readl(base + imxgpio->regs->psr); + val = readl(base + imxgpio->regs->dr); - return val & (1 << gpio) ? 1 : 0; + return (val & (1 << gpio)) ? 1 : 0; } static int imx_get_direction(struct gpio_chip *chip, unsigned offset) -- 2.11.0 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
