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>

drivers/media/platform/ti-vpe/cal.c

@@ -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);