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This is mostly a port of Jacopo's fix:
commit aa4bb8b8838ffcc776a79f49a4d7476b82405349
Author: Jacopo Mondi <jacopo@jmondi.org>
Date: Fri Jul 6 05:51:52 2018 -0400
media: ov5640: Re-work MIPI startup sequence
In the OV5645 case, the changes are:
- At set_power(1) time power up MIPI Tx/Rx and set data and clock lanes in
LP11 during 'sleep' and 'idle' with MIPI clock in non-continuous mode.
- At set_power(0) time power down MIPI Tx/Rx (in addition to the current
power down of regulators and clock gating).
- At s_stream time enable/disable the MIPI interface output.
With this commit the sensor is able to enter LP-11 mode during power up,
as expected by some CSI-2 controllers.
Many thanks to Fabio Estevam for his help debugging this issue.
Tested-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
092e8eb90a