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media: i2c: os04a10: fix power on sequence

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1.The reset signal is directly controlled by GPIO,
so there is no need to wait for the delay of RC circuit

2.Correct the level setting of reset signal

Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
Change-Id: I808a7ba13f23f630d1ab9d11c54cb33a1e85123c
This commit is contained in:
Nickey Yang
2020-06-22 11:08:00 +08:00
committed by Tao Huang
parent 6e63958128
commit abb2f8fc45
1 changed files with 11 additions and 3 deletions
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14
drivers/media/i2c/os04a10.c
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@@ -1731,7 +1731,7 @@ static int __os04a10_power_on(struct os04a10 *os04a10)
return ret;
}
if (!IS_ERR(os04a10->reset_gpio))
gpiod_set_value_cansleep(os04a10->reset_gpio, 0);
gpiod_set_value_cansleep(os04a10->reset_gpio, 1);
ret = regulator_bulk_enable(OS04A10_NUM_SUPPLIES, os04a10->supplies);
if (ret < 0) {
@@ -1740,12 +1740,20 @@ static int __os04a10_power_on(struct os04a10 *os04a10)
}
if (!IS_ERR(os04a10->reset_gpio))
gpiod_set_value_cansleep(os04a10->reset_gpio, 1);
gpiod_set_value_cansleep(os04a10->reset_gpio, 0);
usleep_range(500, 1000);
if (!IS_ERR(os04a10->pwdn_gpio))
gpiod_set_value_cansleep(os04a10->pwdn_gpio, 1);
usleep_range(12000, 16000);
/*
* There is no need to wait for the delay of RC circuit
* if the reset signal is directly controlled by GPIO.
*/
if (!IS_ERR(os04a10->reset_gpio))
usleep_range(6000, 8000);
else
usleep_range(12000, 16000);
/* 8192 cycles prior to first SCCB transaction */
delay_us = os04a10_cal_delay(8192);
usleep_range(delay_us, delay_us * 2);