Messages in this thread | | | From | Eric Anholt <> | Subject | Re: [PATCH 2/2] clk: bcm2835: Skip PLLC clocks when deciding on a new clock parent | Date | Mon, 02 May 2016 08:29:30 -0700 |
| |
Martin Sperl <kernel@martin.sperl.org> writes:
>> On 26.04.2016, at 21:39, Eric Anholt <eric@anholt.net> wrote: >> >> If the firmware had set up a clock to source from PLLC, go along with >> it. But if we're looking for a new parent, we don't want to switch it >> to PLLC because the firmware will force PLLC (and thus the AXI bus >> clock) to different frequencies during over-temp/under-voltage, >> without notification to Linux. >> >> On my system, this moves the Linux-enabled HDMI state machine and DSI1 >> escape clock over to plld_per from pllc_per. EMMC still ends up on >> pllc_per, because the firmware had set it up to use that. >> >> Signed-off-by: Eric Anholt <eric@anholt.net> >> Fixes: 41691b8862e2 ("clk: bcm2835: Add support for programming the audio domain clocks") >> — > > I guess this patch looks to me as if it is a policy inside the kernel, > which is AFAIK frowned upon.
Can you come up with a use for putting peripherals on PLLC ever, such that we need choice? [unhandled content-type:application/pgp-signature] | |