diff options
| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-08-29 15:56:04 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-09-30 16:16:35 +0300 |
| commit | 9eaaf2076dac213c034c69051dd7a625cd41f56e (patch) | |
| tree | 324c8dbe9a8e25c7eb46a986b0b7ac00f4549b59 /drivers/video/omap2/dss/dss_features.h | |
| parent | d875f992e9d0b1473ff98845cb3c2a45dcf6aa0f (diff) | |
OMAP: DSS2: DISPC: Fix minimum PCD value
The current driver had a hardcoded minimum value of 2 for pixel clock
divisor (PCD). This doesn't seem to be right.
OMAP4 TRM says that PCD can be 1 when not downscaling, and inverted
pixel clock (IPC) is off.
OMAP3 TRM says the same, but also in the register descriptions that PCD
value 1 is invalid.
OMAP2 TRM says PCD 2 is the minimum.
OMAP2 is still untested, but for both OMAP3 and OMAP4 PCD of 1 seems to
work fine.
This patch adds a new DSS feature, FEAT_PARAM_DSS_PCD, which is used to
find the minimum and maximum PCD. The minimum is set to 2 for OMAP2, and
1 for OMAP3/4.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/omap2/dss/dss_features.h')
| -rw-r--r-- | drivers/video/omap2/dss/dss_features.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h index c4321908f32..f73585e09d2 100644 --- a/drivers/video/omap2/dss/dss_features.h +++ b/drivers/video/omap2/dss/dss_features.h @@ -77,6 +77,7 @@ enum dss_feat_reg_field { enum dss_range_param { FEAT_PARAM_DSS_FCK, + FEAT_PARAM_DSS_PCD, FEAT_PARAM_DSIPLL_REGN, FEAT_PARAM_DSIPLL_REGM, FEAT_PARAM_DSIPLL_REGM_DISPC, |