media: imx-jpeg: Leave a blank space before the configuration data
authorMing Qian <ming.qian@nxp.com>
Mon, 30 May 2022 07:48:37 +0000 (08:48 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Aug 2022 12:23:20 +0000 (14:23 +0200)
commitc0d98e53e9217fb2a2f2b0b3b6db9b290099aac5
treed9be85a1d9f360e316095886d141e49d9689725f
parent2c784c14938a39184cf2e22cebcb350a1f81022f
media: imx-jpeg: Leave a blank space before the configuration data

[ Upstream commit 6285cdea19daf764bf00f662a59fc83ef67345cf ]

There is a hardware bug that it will load
the first 128 bytes of configuration data twice,
it will led to some configure error.
so shift the configuration data 128 bytes,
and make the first 128 bytes all zero,
then hardware will load the 128 zero twice,
and ignore them as garbage.
then the configuration data can be loaded correctly

Fixes: 2db16c6ed72ce ("media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Reviewed-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/media/platform/imx-jpeg/mxc-jpeg.c