linux-kernel - [PATCH v1 1/3] media: i2c: imx274: Fix Y_OUT

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Message-ID: <1594787096-26685-1-git-send-email-skomatineni@nvidia.com>
Date:   Tue, 14 Jul 2020 21:24:54 -0700
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     <skomatineni@...dia.com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <frankc@...dia.com>, <hverkuil@...all.nl>,
        <luca@...aceresoli.net>, <leonl@...pardimaging.com>,
        <robh+dt@...nel.org>, <lgirdwood@...il.com>, <broonie@...nel.org>
CC:     <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 1/3] media: i2c: imx274: Fix Y_OUT_SIZE register setting

Current driver sets Y_OUT_SIZE to crop height + 8 and seeing long frame
errors on the receiver size as expected height on reciever is crop height.

As per Sony IMX274 Y_OUT_SIZE should be the height of effective
image output from the sensor which are the actual total lines
sent over MIPI CSI to receiver.

So, Y_OUT_SIZE should be same as crop height and this patch fixes it.

Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
---
 drivers/media/i2c/imx274.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/imx274.c b/drivers/media/i2c/imx274.c
index e6aa9f3..55869ff 100644
--- a/drivers/media/i2c/imx274.c
+++ b/drivers/media/i2c/imx274.c
@@ -1163,7 +1163,7 @@ static int imx274_apply_trimming(struct stimx274 *imx274)
 		(-imx274->crop.top / 2) : (imx274->crop.top / 2);
 	v_cut = (IMX274_MAX_HEIGHT - imx274->crop.height) / 2;
 	write_v_size = imx274->crop.height + 22;
-	y_out_size   = imx274->crop.height + 14;
+	y_out_size   = imx274->crop.height;
 
 	err = imx274_write_mbreg(imx274, IMX274_HMAX_REG_LSB, hmax, 2);
 	if (!err)
-- 
2.7.4