On Fri, Oct 12, 2018 at 4:14 PM Jagan Teki [off-list ref] wrote:

On Sunday 07 October 2018 03:08 PM, Jernej Skrabec wrote:

quoted

Video PLL factors can be set in a way that final PLL rate is outside
stable range. H6 user manual specifically says that N factor should not
be below 12. While it doesn't says anything about maximum stable rate, it

Manual says "In application, PLL_FACTOR_N should be more than or equal
to 11" can't it be 11?

PLL_FACTOR_N is the raw value, which starts from 0.
That translates to an actual factor of 12 used in the calculations.

quoted

is clear that PLL doesn't work at 6.096 GHz (254 * 24 MHz).

Set minimum allowed PLL video rate to 288 MHz (12 * 24 MHz) and maximum
to 2.4 GHz, which is maximum in BSP driver.

Is this max freq from here [1]

[1]
https://github.com/Allwinner-Homlet/H6-BSP4.9-linux/blob/master/drivers/clk/sunxi/clk-sun50iw6.c#L164

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