Date: Fri, 1 Nov 2013 15:01:39 -0600 From: Warner Losh <imp@bsdimp.com> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-arm <freebsd-arm@freebsd.org>, Ian Lepore <ian@freebsd.org> Subject: Re: Wandboard support Message-ID: <464A8F80-BC99-4522-A215-7EE44DA03C9D@bsdimp.com> In-Reply-To: <CAJ-VmonmD_gK2s3AeWx5Xvxk8Qa5_dp%2BOgQxY_1amS3gVavt0w@mail.gmail.com> References: <1383272225.31172.60.camel@revolution.hippie.lan> <CAJ-VmomnBAJ0CoCQwh%2BTPo4psVkgdLE=vYsTvnaC1c4FVqgabg@mail.gmail.com> <870557A9-9D0F-41E9-A124-F21C509830F7@bsdimp.com> <CAJ-VmonmD_gK2s3AeWx5Xvxk8Qa5_dp%2BOgQxY_1amS3gVavt0w@mail.gmail.com>
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On Nov 1, 2013, at 1:34 PM, Adrian Chadd wrote: > On 1 November 2013 10:29, Warner Losh <imp@bsdimp.com> wrote: >>=20 >> On Oct 31, 2013, at 10:58 PM, Adrian Chadd wrote: >>=20 >>> Hi! >>>=20 >>> On 31 October 2013 19:17, Ian Lepore <ian@freebsd.org> wrote: >>>> As of r257489 we now have some support for i.MX6 in general and >>>> Wandboard specifically. There is much work to do, especially in = the >>>> area of clock and power management and pinmux control, and someone = other >>>> than me will have to look towards graphics and sound support (I = have no >>>> skills in those areas). >>>>=20 >>>=20 >>> Cool! >>>=20 >>> Can you describe what you need in the clock / power management = areas? >>=20 >> We don't have an infrastructure to do this right now. >>=20 >> Some ports do this on an ad-hoc basis. >>=20 >> The usual needs are to have a DAG relationship between different = parts of the system so you can turn on and tune clocks, as well as power = blocks which may be necessary to power the clock and/or basic-blocks in = the SoC. The latest chips have grown quite complex. >=20 > Well we can plan this stuff out at the next get-together. But first, > I'd like to finish tidying up the MIPS infrastructure stuff before we > tackle the ARM infrastructure stuff. :) Yea, I'm still focused on MIPS... The problem statement was from what I = know about the ARM clock/power code for each of the SoCs... It shouldn't = be viewed as a 'I got this problem and am working on code' at all :) Warner=
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