linux-kernel - Re: [PATCH 5/5] clk: sprd: add clocks support for SC9863A

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Message-Id: <20191125013312.ACC2E2071A@mail.kernel.org>
Date:   Sun, 24 Nov 2019 17:33:11 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Chunyan Zhang <zhang.lyra@...il.com>
Cc:     Chunyan Zhang <chunyan.zhang@...soc.com>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>
Subject: Re: [PATCH 5/5] clk: sprd: add clocks support for SC9863A

Quoting Chunyan Zhang (2019-11-17 03:27:15)
> 
> Not sure if I understand correctly - do you mean that switch to use a
> reference to clk_parent_data.hw in the driver instead?
> like:
> https://elixir.bootlin.com/linux/v5.4-rc7/source/drivers/clk/qcom/gcc-sm8150.c#L136
> 

Yes something like that.

> Since if I have to define many clk_parent_data.fw_name strings
> instead, it seems not able to reduce the code size, right?

Ideally there are some internal only clks that can be linked to their
parent with a single clk_hw pointer. That will hopefully keep the size
down somewhat. And if there are any external clks, they can be described
in DT and then only the .fw_name field can be used and the fallback
field .name can be left assigned to NULL.