linux/drivers/video/omap2
Tomi Valkeinen 9eaaf2076d 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>
2011-09-30 16:16:35 +03:00
..
displays OMAP: DSS2: Create an enum for DSI pixel formats 2011-09-30 16:16:29 +03:00
dss OMAP: DSS2: DISPC: Fix minimum PCD value 2011-09-30 16:16:35 +03:00
omapfb OMAP: OMAPFB: string parsing cleanups 2011-09-30 16:16:22 +03:00
Kconfig OMAP: DSS2: Add generic and Sharp panel drivers 2009-12-09 18:19:42 +02:00
Makefile OMAP2: avoid descending into disabled framebuffer dirs 2011-05-11 14:20:53 +03:00
vram.c OMAP: DSS: VRAM: Align start & size of vram to 2M 2010-12-15 11:16:08 +02:00
vrfb.c