Re: [PATCH] clk: qoriq: Don't allow CPU clocks higher than starting value

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 10/17, Scott Wood wrote:
> The boot-time frequency of a CPU is considered its rated maximum, as we
> have no other source of such information.  However, this was previously
> only used for chips with 80% restrictions on secondary PLLs.  This
> usually wasn't a problem because most chips/configs boot with a divider
> of /1, with other dividers being used only for dynamic frequency
> reduction.  However, at least one config (LS1021A at less than 1 GHz)
> uses a different divider for top speed.  This was causing cpufreq to set
> a frequency beyond the chip's rated speed.
> 
> This is fixed by applying a 100%-of-initial-speed limit to all CPU PLLs,
> similar to the existing 80% limit that only applied to some.
> 
> Signed-off-by: Scott Wood <oss@xxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> ---

All silence, so I applied to clk-fixes because presumably this is
some sort of badness we need to fix quickly.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]