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Subject: media: i2c: imx219: fix msr access command sequence Author: Conor Dooley <conor.doo...@microchip.com> Date: Fri Jun 7 16:50:23 2024 +0100 It was reported to me that the imx219 didn't work on one of our development kits partly because the access sequence is incorrect. The datasheet I could find [1] for this camera has the access sequence: Seq. No. Address (Hex) data 1 30EB 05 2 30EB 0C 3 300A FF 4 300B FF 5 30EB 05 6 30EB 09 but the driver swaps the first two elements. Laurent pointed out on IRC that the original code used the correct sequence for 1920x1080 but the current sequence for 3280x2464 and 1640x1232. During refactoring of the init sequence the current order was used for all formats. Switch to using the documented sequence. Link: https://www.opensourceinstruments.com/Electronics/Data/IMX219PQ.pdf [1] Fixes: 8508455961d5 ("media: i2c: imx219: Split common registers from mode tables") Fixes: 1283b3b8f82b ("media: i2c: Add driver for Sony IMX219 sensor") Signed-off-by: Conor Dooley <conor.doo...@microchip.com> Reviewed-by: Dave Stevenson <dave.steven...@raspberrypi.com> Tested-by: Dave Stevenson <dave.steven...@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com> Tested-by: Adam Ford <aford...@gmail.com> #imx8mp-beacon-kit Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl> drivers/media/i2c/imx219.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c index 51ebf5453fce..e78a80b2bb2e 100644 --- a/drivers/media/i2c/imx219.c +++ b/drivers/media/i2c/imx219.c @@ -162,8 +162,8 @@ static const struct cci_reg_sequence imx219_common_regs[] = { { IMX219_REG_MODE_SELECT, 0x00 }, /* Mode Select */ /* To Access Addresses 3000-5fff, send the following commands */ - { CCI_REG8(0x30eb), 0x0c }, { CCI_REG8(0x30eb), 0x05 }, + { CCI_REG8(0x30eb), 0x0c }, { CCI_REG8(0x300a), 0xff }, { CCI_REG8(0x300b), 0xff }, { CCI_REG8(0x30eb), 0x05 },
