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media: ti-vpe: cal: fix dummy read to phy 

After ComplexIO reset, a dummy read to PHY is needed as per CAL spec to
finish the reset. Currently the driver reads a ComplexIO register, not
PHY register. Fix this.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Tomi Valkeinen 2020-03-25 13:15:04 +01:00 committed by Mauro Carvalho Chehab
parent f77f2e1f29
commit c1075243e5
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/ti-vpe/cal.c
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@ -796,8 +796,8 @@ static void csi2_phy_init(struct cal_ctx *ctx)
ctx->csi2_port,
reg_read(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port)));
/* Dummy read to allow SCP to complete */
val = reg_read(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port));
/* Dummy read to allow SCP reset to complete */
reg_read(ctx->cc, CAL_CSI2_PHY_REG0);
/* 3.A. Program Phy Timing Parameters */
csi2_phy_config(ctx);