On 25/06/2026 15:14, Sunyun Yang wrote: > Krzysztof Kozlowski <[email protected]> 于2026年6月25日周四 20:54写道： >> >> On 08/05/2026 15:40, [email protected] wrote: >>> + >>> +static void lt9611c_reset(struct lt9611c *lt9611c) >>> +{ >>> + gpiod_set_value_cansleep(lt9611c->reset_gpio, 1); >>> + msleep(20); >>> + >>> + gpiod_set_value_cansleep(lt9611c->reset_gpio, 0); >>> + msleep(20); >>> + >>> + gpiod_set_value_cansleep(lt9611c->reset_gpio, 1); >> >> This is just plain wrong. Why do you assert, then de-assert and then >> finally assert AGAIN the reset leaving the device in powerdown stage? >> > I am using software to emulate the hardware RESET button on our EVB. > When the hardware RESET button is pressed while our chip is running, > the signal level changes from HIGH to LOW and then back to HIGH. > > Of course, we can also use the following: > static void lt9611c_reset(struct lt9611c *lt9611c) > { > gpiod_set_value_cansleep(lt9611c->reset_gpio, 0); > msleep(50); > gpiod_set_value_cansleep(lt9611c->reset_gpio, 1); > msleep(20); > }
Makes no sense either and you just did not get the point and did not answer my question. I asked WHY you leave asserted. Answer "we emulate" is just plain wrong. So again please answer: Why do you leave device with reset asserted? Best regards, Krzysztof
