Emilio,
It looks like the DSS drivers for the 2.6.37 kernel prefer to keep FCLK at a maximum value of 96MHz for power saving purposes. The FCLK can reach a maximum frequency of 173MHz, which will definitely cover the scaling requirements you have.
I have one thing for you to try that should set your FCLK to a higher value. In your kernel config, try setting
DSS_MIN_FCK_PER_PCK to a value greater than 1, such as 2 for starters. Here is where you can set this value:
Symbol: OMAP2_DSS_MIN_FCK_PER_PCK [=1] │ │ Type : integer │ │ Range : [0 32] │ │ Prompt: Minimum FCK/PCK ratio (for scaling) │ │ Defined at drivers/video/omap2/dss/Kconfig:118 │ │ Depends on: HAS_IOMEM [=y] && OMAP2_DSS [=y] │ │ Location: │ │ -> Device Drivers │ │ -> Graphics support │ │ -> OMAP2/3 Display Subsystem support (EXPERIMENTAL) (OMAP2_DSS [=y])
Let me know how it goes.
Regards,
Josh