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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2021-02-03 06:08:19 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-08-04 15:43:51 +0300 |
| commit | a581c87c681c6202403d74e8e816968841afe2f7 (patch) | |
| tree | 07c0bade1a696fee910396668450495e88c95c0f /drivers/staging/media/imx | |
| parent | e8713c31f8adab67155e245a217d0c7cad05fcf5 (diff) | |
| download | linux-a581c87c681c6202403d74e8e816968841afe2f7.tar.xz | |
media: imx: imx7-media-csi: Set TWO_8BIT_SENSOR for >= 10-bit formats
Sample code from NXP, as well as experiments on i.MX8MM with RAW10
capture with an OV5640 sensor connected over CSI-2, showed that the
TWO_8BIT_SENSOR field of the CSICR3 register needs to be set for formats
larger than 8 bits. Do so, even if the reference manual doesn't clearly
describe the effect of the field.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/staging/media/imx')
| -rw-r--r-- | drivers/staging/media/imx/imx7-media-csi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c index 894c4de31790..8aefcf0e219f 100644 --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -421,6 +421,7 @@ static void imx7_csi_configure(struct imx7_csi *csi) struct v4l2_pix_format *out_pix = &vdev->fmt; int width = out_pix->width; u32 stride = 0; + u32 cr3 = BIT_FRMCNT_RST; u32 cr1, cr18; cr18 = imx7_csi_reg_read(csi, CSI_CSICR18); @@ -464,6 +465,7 @@ static void imx7_csi_configure(struct imx7_csi *csi) case MEDIA_BUS_FMT_SGBRG10_1X10: case MEDIA_BUS_FMT_SGRBG10_1X10: case MEDIA_BUS_FMT_SRGGB10_1X10: + cr3 |= BIT_TWO_8BIT_SENSOR; cr18 |= BIT_MIPI_DATA_FORMAT_RAW10; break; case MEDIA_BUS_FMT_Y12_1X12: @@ -471,6 +473,7 @@ static void imx7_csi_configure(struct imx7_csi *csi) case MEDIA_BUS_FMT_SGBRG12_1X12: case MEDIA_BUS_FMT_SGRBG12_1X12: case MEDIA_BUS_FMT_SRGGB12_1X12: + cr3 |= BIT_TWO_8BIT_SENSOR; cr18 |= BIT_MIPI_DATA_FORMAT_RAW12; break; case MEDIA_BUS_FMT_Y14_1X14: @@ -478,6 +481,7 @@ static void imx7_csi_configure(struct imx7_csi *csi) case MEDIA_BUS_FMT_SGBRG14_1X14: case MEDIA_BUS_FMT_SGRBG14_1X14: case MEDIA_BUS_FMT_SRGGB14_1X14: + cr3 |= BIT_TWO_8BIT_SENSOR; cr18 |= BIT_MIPI_DATA_FORMAT_RAW14; break; /* @@ -510,7 +514,7 @@ static void imx7_csi_configure(struct imx7_csi *csi) imx7_csi_reg_write(csi, cr1, CSI_CSICR1); imx7_csi_reg_write(csi, BIT_DMA_BURST_TYPE_RFF_INCR16, CSI_CSICR2); - imx7_csi_reg_write(csi, BIT_FRMCNT_RST, CSI_CSICR3); + imx7_csi_reg_write(csi, cr3, CSI_CSICR3); imx7_csi_reg_write(csi, cr18, CSI_CSICR18); imx7_csi_reg_write(csi, (width * out_pix->height) >> 2, CSI_CSIRXCNT); |