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Subject: media: ov2740: Add a sleep after resetting the sensor Author: Hans de Goede <hdego...@redhat.com> Date: Mon Dec 4 13:39:45 2023 +0100 Split the resetting of the sensor out of the link_freq_config reg_list and add a delay after this. This hopefully fixes the stream sometimes not starting, this was taken from the ov2740 sensor driver in the out of tree IPU6 driver: https://github.com/intel/ipu6-drivers/ Signed-off-by: Hans de Goede <hdego...@redhat.com> Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl> drivers/media/i2c/ov2740.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) --- diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c index 3c58a6e0d7a0..552935ccb4a9 100644 --- a/drivers/media/i2c/ov2740.c +++ b/drivers/media/i2c/ov2740.c @@ -128,7 +128,6 @@ struct ov2740_mode { }; static const struct ov2740_reg mipi_data_rate_720mbps[] = { - {0x0103, 0x01}, {0x0302, 0x4b}, {0x030d, 0x4b}, {0x030e, 0x02}, @@ -137,7 +136,6 @@ static const struct ov2740_reg mipi_data_rate_720mbps[] = { }; static const struct ov2740_reg mipi_data_rate_360mbps[] = { - {0x0103, 0x01}, {0x0302, 0x4b}, {0x0303, 0x01}, {0x030d, 0x4b}, @@ -935,6 +933,15 @@ static int ov2740_start_streaming(struct ov2740 *ov2740) if (ov2740->nvm) ov2740_load_otp_data(ov2740->nvm); + /* Reset the sensor */ + ret = ov2740_write_reg(ov2740, 0x0103, 1, 0x01); + if (ret) { + dev_err(&client->dev, "failed to reset\n"); + return ret; + } + + usleep_range(10000, 15000); + link_freq_index = ov2740->cur_mode->link_freq_index; reg_list = &link_freq_configs[link_freq_index].reg_list; ret = ov2740_write_reg_list(ov2740, reg_list); _______________________________________________ linuxtv-commits mailing list linuxtv-commits@linuxtv.org https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
