[U-Boot] [PATCH] sunxi: set up PLL1 on sun6i+ without use dividers

Maxime Ripard maxime.ripard at free-electrons.com
Mon Apr 10 06:59:01 UTC 2017


On Mon, Apr 10, 2017 at 12:19:41AM +0800, Icenowy Zheng wrote:
> According to the researching result of Ondrej Jirman, the factor M of
> PLL1 shouldn't be used and the factor P should be used only if the
> intended frequency is lower than 288MHz. This is proven by the
> clk-sun8iw7_tbl.c in the BSP source code -- in there the M value is
> always 0 and the maximum frequency that P is not 0 is 224MHz.
> 
> As P is ignored on sun6i, it's not currently used. This patch removed
> the usage of M.
> 
> This patch is an original work by Ondrej Jirman, however, he didn't add
> a Signed-off-by tag here to his commit. So I take this code and added my
> Signed-off-by.
> 
> Signed-off-by: Icenowy Zheng <icenowy at aosc.io>
> ---
> 
> This is a critical patch, and should be added to 2017.05.
> 
> It has been verified by the Armbian.

This doesn't mean anything. How has this been verified?

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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