[PATCH v4 0/4] fix the clock setting for SAR ADC

[Jonathan Cameron]

On Tue, 28 Nov 2017 21:11:29 +0800
Yixun Lan <yixun.lan at amlogic.com> wrote:

> On 11/11/17 08:37, Jonathan Cameron wrote:
> > On Tue, 7 Nov 2017 22:36:00 +0100
> > Martin Blumenstingl <martin.blumenstingl at googlemail.com> wrote:
> >   
> >> Hi Yixun,
> >>
> >> On Tue, Nov 7, 2017 at 3:09 PM, Yixun Lan <yixun.lan at amlogic.com> wrote:  
> >>> patch [1/4]:
> >>>   Fix wrong SARADC/SANA clock gate bit in Meson-GXBB/GXL,
> >>> the published datasheets[4] also has wrong description about this.
> >>>   This patch should be explicitly merged *before* other patches.
> >>>
> >>> patch [2-4/4]:
> >>>   Drop the "sana" clock from SAR ADC module,    
> >> I agree with Jerome that patch 2/4 should be applied last.  
> > 
> > Let me know when I should take this.
> > 
> > Thanks,
> > 
> > Jonathan
> >   
> >> when I wrote the driver I couldn't get it to work on my GXBB board
> >> (which unfortunately has died since then) because the clocks were
> >> disabled (they weren't enabled by the bootloader). people who are
> >> using an old .dtb would get the same problem again until the clock
> >> driver is merged
> >>  
> >>>   From the hardware perspective, the SAR ADC module doesn't
> >>> require "sana" clock to wrok. This should apply to all SoC,
> >>> including meson6,8, GXBB, GXL..    
> >> thank you for clarifying this!
> >>  
> >>> Note: the whole patchset series has been tested at GXL-P212 board,
> >>> we haven't got any meson6,8 board to test, so I would appreciate
> >>> if someone (Martin?) could help to confirm it works there.    
> >> I can test this on a Meson8b and a Meson8m2 board on the weekend -
> >> I'll let you know about the results
> >>
> >>
> >> Regards
> >> Martin
> >> --
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> > 
> > 
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> > 
> > .
> >   
> 
> Hi Jonathan Cameron & Kevin Hilman:
> 
>  since the clk part patch has been applied[1], can we proceed with others?
> 
> to Jonathan:
> I think the iio part(patch [2/4]) should be merged via your iio tree?
> see [2]
I've applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.  It also makes sense for me to
take the dts binding update as it goes with the driver change. 

Hence I've just left patch 4 for Kevin.  Doesn't matter if this crosses
with Kevin also taking patch 3 though as it'll get sorted out automatically
by git later anyway.

Thanks

Jonathan
> 
> to Kevin:
> could you take the DTS part? see [3], and the patch [4/4] has a rework
> version, see [4], to separate dt64 vs dt32 device tree.
> 
> 
> [1]
> http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005472.html
> 
> [2]
> http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005264.html
> 
> [3]
> http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005265.html
> 
> [4]
> http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005304.html
> http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005305.html
> http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005306.html
> 
> Yixun
>