This adds support for reading display timings from DT into a struct
display_timings. The of_display_timing implementation supports multiple
subnodes. All children are read into an array, that can be queried.
If no native mode is specified, the first subnode will be used.
For cases where the graphics driver knows there can be only one
mode description or where the driver only supports one mode, a helper
function of_get_videomode is added, that gets a struct videomode from DT.
Signed-off-by: Steffen Trumtrar
Signed-off-by: Philipp Zabel
Acked-by: Stephen Warren
Reviewed-by: Thierry Reding
Acked-by: Thierry Reding
Tested-by: Thierry Reding
Tested-by: Philipp Zabel
Reviewed-by: Laurent Pinchart
Acked-by: Laurent Pinchart
Tested-by: Afzal Mohammed
Tested-by: Rob Clark
Tested-by: Leela Krishna Amudala