linux-kernel - Re: [PATCH 1/2] clk: meson-g12a: add cpu clock bindings

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Message-ID: <CAFBinCDt=BB_nAJ5P1TX0ahmOiqTaLGrqv5X4v2u62KCPw1UGQ@mail.gmail.com>
Date:   Fri, 1 Mar 2019 18:05:12 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     jbrunet@...libre.com, devicetree@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] clk: meson-g12a: add cpu clock bindings

Hi Neil,

On Fri, Mar 1, 2019 at 5:43 PM Neil Armstrong <narmstrong@...libre.com> wrote:
>
> Hi Martin,
>
> On 01/03/2019 16:26, Martin Blumenstingl wrote:
> > Hi Neil,
> >
> > On Fri, Mar 1, 2019 at 11:22 AM Neil Armstrong <narmstrong@...libre.com> wrote:
> >>
> >> Add Amlogic G12A Family CPU clocks bindings, only export CPU_CLK since
> >> it should be the only ID used.
> > is this also true for the CPU post-dividers (APB, ATB, AXI, CPU CLK TRACE)?
>
> Do we need these to be exported ?
I'm not sure as I couldn't find more details about APB, ATB and AXI on G12A:
- APB and ATB may be needed by the CoreSight bindings
(Documentation/devicetree/bindings/arm/coresight.txt)
- AXI may be needed by the VPU driver (the S912 datasheet mentions in
OSD1_AFBCD_ENABLE: "id_fifo_thrd : unsigned , default = 64, axi id
fifo threshold")

if you don't know either then I'm fine with skipping them for now, we
can still export them later.


Martin