tree 2da82ab19b593cf6999371014917ae585c3f96a7
parent 9aff406915ec0fe4b5385242dc9524960442af7b
author Steve Sakoman <sakoman@gmail.com> 1317373716 +0000
committer Albert ARIBAUD <albert.u.boot@aribaud.net> 1319745394 +0200

omap: overo: Disable pull-ups on camera PCLK, HS and VS signals

The level shifters used on the Caspa camera module have a 4k output
impedance. Combined with the 100uA pull-up resistors in the OMAP3,
this raises the ground level to 400mV. Adding crosstalk between the
pixel clock and the HS/VS signals on the flat cable (a ground line in
between would have been nice), logic 0 levels can raise up to 650mV.
This exceeds the camera input pins VIL maximum voltage.  This change
suggested-by Laurent Pinchart

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>