linux-kernel - Re: [PATCH V6 0/6] Support building i.MX ARMv8 platforms clock driver as module

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Date:   Mon, 13 Jul 2020 17:25:01 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     mturquette@...libre.com, sboyd@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, aisheng.dong@....com,
        abel.vesa@....com, peng.fan@....com, sfr@...b.auug.org.au,
        j.remmet@...tec.de, georg.waibel@...demann-group.de,
        Georg.Waibel@...demann-group.com,
        laurent.pinchart@...asonboard.com, chen.fang@....com,
        fugang.duan@....com, daniel.baluta@....com, yuehaibing@...wei.com,
        andrew.smirnov@...il.com, horia.geanta@....com,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, Linux-imx@....com
Subject: Re: [PATCH V6 0/6] Support building i.MX ARMv8 platforms clock
 driver as module

On Tue, Jul 07, 2020 at 01:09:33PM +0800, Anson Huang wrote:
> Nowdays, there are more and more requirements of building SoC specific drivers
> as modules, such as Android GKI (generic kernel image), this patch set supports
> building i.MX ARMv8 SoCs clock drivers as modules,
> 
> The CLK_IMXxxx is introduced for i.MX ARMv7 platforms in order to make the build
> options aligned, the reason why i.MX ARMv7 platforms clock driver do NOT support
> module build and COMPILE_TEST is because, some drivers like i.MX GPT timer driver
> depends on clock driver to be ready before it, GPT driver uses TIMER_OF_DECLARE(),
> while i.MX6/7 clock drivers use CLK_OF_DECLARE(), and GPT driver is critical for
> i.MX6/7 platforms kernel boot up, so GPT driver needs to be changed to support
> loadable clock driver first, then the i.MX6/7 clock drivers can support loadable
> module, this will be done later.
> 
> Changes since V5:
> 	- make i.MX ARMv7 platforms clock driver to bool and NOT support COMPILT_TEST,
> 	  since they depends on ARCH_MXC or SOC config, which makes the COMPILT_TEST
> 	  NOT make enough sense, so just skip the COMPILT_TEST support for i.MX ARMv7
> 	  platform clock drivers, leave them same as original implementation.
> 	- add a patch to fix build warning reported by kernel robot test on i.MX6SL
> 	  clock driver.
> 
> Anson Huang (6):
>   clk: composite: Export clk_hw_register_composite()
>   clk: imx: Support building i.MX common clock driver as module
>   clk: imx: Add clock configuration for ARMv7 platforms
>   clk: imx8m: Support module build
>   clk: imx8qxp: Support building i.MX8QXP clock driver as module
>   clk: imx6sl: Fix build warning reported by kernel test robot

I'm picking up the series and throwing it into linux-next for testing.

Shawn