linux-kernel - Re: [PATCH v2 0/4] clk: meson: g12a: add support for DVFS

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Date:   Fri, 09 Aug 2019 15:02:52 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>, sboyd@...nel.org
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 0/4] clk: meson: g12a: add support for DVFS

On Thu 08 Aug 2019 at 14:18, Kevin Hilman <khilman@...libre.com> wrote:

> Neil Armstrong <narmstrong@...libre.com> writes:
>
>> The G12A/G12B Socs embeds a specific clock tree for each CPU cluster :
>> cpu_clk / cpub_clk
>> |   \- cpu_clk_dyn
>> |      |  \- cpu_clk_premux0
>> |      |        |- cpu_clk_postmux0
>> |      |        |    |- cpu_clk_dyn0_div
>> |      |        |    \- xtal/fclk_div2/fclk_div3
>> |      |        \- xtal/fclk_div2/fclk_div3
>> |      \- cpu_clk_premux1
>> |            |- cpu_clk_postmux1
>> |            |    |- cpu_clk_dyn1_div
>> |            |    \- xtal/fclk_div2/fclk_div3
>> |            \- xtal/fclk_div2/fclk_div3
>> \ sys_pll / sys1_pll
>>
>> This patchset adds notifiers on cpu_clk / cpub_clk, cpu_clk_dyn,
>> cpu_clk_premux0 and sys_pll / sys1_pll to permit change frequency of
>> the CPU clock in a safe way as recommended by the vendor Documentation
>> and reference code.
>>
>> This patchset :
>> - introduces needed core and meson clk changes
>> - adds the clock notifiers
>>
>> Dependencies:
>> - None
>
> nit: this doesn't apply to v5.3-rc, but appears to apply on
> clk-meson/v5.4/drivers, so it appears to be dependent on the cleanups
> from Alex.

Indeed, Applied on top of this.

>
> Kevin