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3909a92d7d
According to https://www.kernel.org/doc/Documentation/gpio/consumer.txt, - all of the gpiod_set_value_xxx() functions operate with the *logical* value. So in imx290_power_on() the reset signal should be cleared (de-asserted) with gpiod_set_value_cansleep(imx290->rst_gpio, 0), and in imx290_power_off() the value of 1 must be used to apply/assert the reset to the sensor. In the device tree the reset pin is described as GPIO_ACTIVE_LOW, and gpiod_set_value_xxx() functions take this into account, - when devm_gpiod_get_optional() is called with GPIOD_ASIS, the GPIO is not initialized, and the direction must be set later; using a GPIO without setting its direction first is illegal and will result in undefined behavior. Fix this by using GPIOD_OUT_HIGH instead of GPIOD_ASIS (this asserts the reset signal to the sensor initially). Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
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| .. | ||
| cec | ||
| common | ||
| dvb-core | ||
| dvb-frontends | ||
| firewire | ||
| i2c | ||
| mc | ||
| mmc | ||
| pci | ||
| platform | ||
| radio | ||
| rc | ||
| spi | ||
| test-drivers | ||
| tuners | ||
| usb | ||
| v4l2-core | ||
| Kconfig | ||
| Makefile | ||