linux-kernel - Re: [PATCH v8 11/26] memory: tegra124-emc: Make driver modular

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Date:   Wed, 11 Nov 2020 13:25:34 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Mikko Perttunen <cyndis@...si.fi>,
        Viresh Kumar <vireshk@...nel.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v8 11/26] memory: tegra124-emc: Make driver modular

11.11.2020 12:26, Krzysztof Kozlowski пишет:
>> 11.11.2020 12:04, Krzysztof Kozlowski пишет:
>>>> -obj-$(CONFIG_TEGRA124_EMC)		+= clk-tegra124-emc.o
>>>> +obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124-emc.o
>>>> +obj-$(CONFIG_ARCH_TEGRA_132_SOC)	+= clk-tegra124-emc.o
>>> How is it related to modularization? It looks like different issue is
>>> fixed here.
>> The CONFIG_TEGRA124_EMC now could be 'm', while the clock code must be
>> built-in. The TEGRA124 EMC driver is used by T124 and T132 SoCs.\
> Mhmm,  the CONFIG_TEGRA124_EMC depends on ARCH_TEGRA_124_SOC so on the
> config !ARCH_TEGRA_124_SOC && ARCH_TEGRA_132_SOC this was not
> selected. Now it will be selected.
> 

The driver isn't exposed on ARM64 probably because nobody bothered to do
it so far. But it's not also the memory driver which depends on
clk-tegra124-emc.o, it's also the main clk/tegra/clk-tegra124.c driver
itself, which is also used by both T124/132.