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| author |   Chen-Yu Tsai <wens@csie.org> | 2019-12-15 17:59:13 +0100 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-01-04 08:17:14 +0100 |
| commit | cf9e6d5dbdd56ef2aa72f28c806711c4293c8848 (patch) | |
| tree | 71a9a641e9ae76188c7272fc182edc08f2e37062 /drivers/media | |
| parent | media: dt-bindings: media: sun4i-csi: Add compatible for CSI0 on R40 (diff) | |
| download | linux-dev-cf9e6d5dbdd56ef2aa72f28c806711c4293c8848.tar.xz linux-dev-cf9e6d5dbdd56ef2aa72f28c806711c4293c8848.zip | |
media: sun4i-csi: Fix data sampling polarity handling
The CLK_POL field specifies whether data is sampled on the falling or
rising edge of PCLK, not whether the data lines are active high or low.
Evidence of this can be found in the timing diagram labeled "horizontal
size setting and pixel clock timing".
Fix the setting by checking the correct flag, V4L2_MBUS_PCLK_SAMPLE_RISING.
While at it, reorder the three polarity flag checks so HSYNC and VSYNC
are grouped together.
Fixes: 577bbf23b758 ("media: sunxi: Add A10 CSI driver")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c b/drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c index d6979e11a67b..8b567d0f019b 100644 --- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c +++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c @@ -279,8 +279,8 @@ static int sun4i_csi_start_streaming(struct vb2_queue *vq, unsigned int count) csi->regs + CSI_WIN_CTRL_H_REG); hsync_pol = !!(bus->flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH); - pclk_pol = !!(bus->flags & V4L2_MBUS_DATA_ACTIVE_HIGH); vsync_pol = !!(bus->flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH); + pclk_pol = !!(bus->flags & V4L2_MBUS_PCLK_SAMPLE_RISING); writel(CSI_CFG_INPUT_FMT(csi_fmt->input) | CSI_CFG_OUTPUT_FMT(csi_fmt->output) | CSI_CFG_VSYNC_POL(vsync_pol) | |