| Message ID | 20230131192016.3476937-6-dave.stevenson@raspberrypi.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | imx290: Minor fixes, support for alternate INCK, and more ctrls | expand |
Hi Dave, Thank you for the patch. On Tue, Jan 31, 2023 at 07:20:10PM +0000, Dave Stevenson wrote: > Commit "97589ad61c73 media: i2c: imx290: Add support for 2 data lanes" > added support for running in two lane mode (instead of 4), but > without changing the link frequency that resulted in a max of 30fps. > > Commit "98e0500eadb7 media: i2c: imx290: Add configurable link frequency > and pixel rate" then doubled the link frequency when in 2 lane mode, > but didn't undo the correction for running at only 30fps, just extending > horizontal blanking instead. > > Remove the 30fps limit on 2 lane by correcting the register config > in accordance with the datasheet for 60fps operation over 2 lanes. > > Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Looks reasonable. We lose support for 30fps in 2 data lanes, but we get a coherent behaviour, and we can implement support for lower frame rates on top (which I suspect may be in further patches in this series :-)). Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > drivers/media/i2c/imx290.c | 17 +++-------------- > 1 file changed, 3 insertions(+), 14 deletions(-) > > diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c > index bd8729aed43c..6bcfa535872f 100644 > --- a/drivers/media/i2c/imx290.c > +++ b/drivers/media/i2c/imx290.c > @@ -366,7 +366,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = { > { > .width = 1920, > .height = 1080, > - .hmax = 4400, > + .hmax = 2200, > .link_freq_index = FREQ_INDEX_1080P, > .data = imx290_1080p_settings, > .data_size = ARRAY_SIZE(imx290_1080p_settings), > @@ -374,7 +374,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = { > { > .width = 1280, > .height = 720, > - .hmax = 6600, > + .hmax = 3300, > .link_freq_index = FREQ_INDEX_720P, > .data = imx290_720p_settings, > .data_size = ARRAY_SIZE(imx290_720p_settings), > @@ -518,21 +518,10 @@ static int imx290_set_register_array(struct imx290 *imx290, > static int imx290_set_data_lanes(struct imx290 *imx290) > { > int ret = 0; > - u32 frsel; > - > - switch (imx290->nlanes) { > - case 2: > - default: > - frsel = 0x02; > - break; > - case 4: > - frsel = 0x01; > - break; > - } > > imx290_write(imx290, IMX290_PHY_LANE_NUM, imx290->nlanes - 1, &ret); > imx290_write(imx290, IMX290_CSI_LANE_MODE, imx290->nlanes - 1, &ret); > - imx290_write(imx290, IMX290_FR_FDG_SEL, frsel, &ret); > + imx290_write(imx290, IMX290_FR_FDG_SEL, 0x01, &ret); > > return ret; > }
Hi Dave, thanks for the patch. Am Dienstag, 31. Januar 2023, 20:20:10 CET schrieb Dave Stevenson: > Commit "97589ad61c73 media: i2c: imx290: Add support for 2 data lanes" > added support for running in two lane mode (instead of 4), but > without changing the link frequency that resulted in a max of 30fps. > > Commit "98e0500eadb7 media: i2c: imx290: Add configurable link frequency > and pixel rate" then doubled the link frequency when in 2 lane mode, > but didn't undo the correction for running at only 30fps, just extending > horizontal blanking instead. > > Remove the 30fps limit on 2 lane by correcting the register config > in accordance with the datasheet for 60fps operation over 2 lanes. > > Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> > --- > drivers/media/i2c/imx290.c | 17 +++-------------- > 1 file changed, 3 insertions(+), 14 deletions(-) > > diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c > index bd8729aed43c..6bcfa535872f 100644 > --- a/drivers/media/i2c/imx290.c > +++ b/drivers/media/i2c/imx290.c > @@ -366,7 +366,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = > { { > .width = 1920, > .height = 1080, > - .hmax = 4400, > + .hmax = 2200, > .link_freq_index = FREQ_INDEX_1080P, > .data = imx290_1080p_settings, > .data_size = ARRAY_SIZE(imx290_1080p_settings), > @@ -374,7 +374,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = > { { > .width = 1280, > .height = 720, > - .hmax = 6600, > + .hmax = 3300, > .link_freq_index = FREQ_INDEX_720P, > .data = imx290_720p_settings, > .data_size = ARRAY_SIZE(imx290_720p_settings), > @@ -518,21 +518,10 @@ static int imx290_set_register_array(struct imx290 > *imx290, static int imx290_set_data_lanes(struct imx290 *imx290) > { > int ret = 0; > - u32 frsel; > - > - switch (imx290->nlanes) { > - case 2: > - default: > - frsel = 0x02; > - break; > - case 4: > - frsel = 0x01; > - break; > - } > > imx290_write(imx290, IMX290_PHY_LANE_NUM, imx290->nlanes - 1, &ret); > imx290_write(imx290, IMX290_CSI_LANE_MODE, imx290->nlanes - 1, &ret); > - imx290_write(imx290, IMX290_FR_FDG_SEL, frsel, &ret); > + imx290_write(imx290, IMX290_FR_FDG_SEL, 0x01, &ret); > > return ret; > } Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c index bd8729aed43c..6bcfa535872f 100644 --- a/drivers/media/i2c/imx290.c +++ b/drivers/media/i2c/imx290.c @@ -366,7 +366,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = { { .width = 1920, .height = 1080, - .hmax = 4400, + .hmax = 2200, .link_freq_index = FREQ_INDEX_1080P, .data = imx290_1080p_settings, .data_size = ARRAY_SIZE(imx290_1080p_settings), @@ -374,7 +374,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = { { .width = 1280, .height = 720, - .hmax = 6600, + .hmax = 3300, .link_freq_index = FREQ_INDEX_720P, .data = imx290_720p_settings, .data_size = ARRAY_SIZE(imx290_720p_settings), @@ -518,21 +518,10 @@ static int imx290_set_register_array(struct imx290 *imx290, static int imx290_set_data_lanes(struct imx290 *imx290) { int ret = 0; - u32 frsel; - - switch (imx290->nlanes) { - case 2: - default: - frsel = 0x02; - break; - case 4: - frsel = 0x01; - break; - } imx290_write(imx290, IMX290_PHY_LANE_NUM, imx290->nlanes - 1, &ret); imx290_write(imx290, IMX290_CSI_LANE_MODE, imx290->nlanes - 1, &ret); - imx290_write(imx290, IMX290_FR_FDG_SEL, frsel, &ret); + imx290_write(imx290, IMX290_FR_FDG_SEL, 0x01, &ret); return ret; }
Commit "97589ad61c73 media: i2c: imx290: Add support for 2 data lanes" added support for running in two lane mode (instead of 4), but without changing the link frequency that resulted in a max of 30fps. Commit "98e0500eadb7 media: i2c: imx290: Add configurable link frequency and pixel rate" then doubled the link frequency when in 2 lane mode, but didn't undo the correction for running at only 30fps, just extending horizontal blanking instead. Remove the 30fps limit on 2 lane by correcting the register config in accordance with the datasheet for 60fps operation over 2 lanes. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> --- drivers/media/i2c/imx290.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-)