linux-kernel - Re: [PATCH V9 0/6] Support building i.MX ARMv8 platforms clock driver as module

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Date:   Sat, 22 Aug 2020 12:38:48 +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,
        arnd@...db.de, peng.fan@....com, abel.vesa@....com,
        fugang.duan@....com, daniel.baluta@....com, yuehaibing@...wei.com,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, Linux-imx@....com
Subject: Re: [PATCH V9 0/6] Support building i.MX ARMv8 platforms clock
 driver as module

On Thu, Jul 30, 2020 at 09:22:48AM +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 V8:
> 	- explicitly include linux/bits.h in patch #1.
> 
> Anson Huang (6):
>   clk: imx6sl: Use BIT(x) to avoid shifting signed 32-bit value by 31
>     bits
>   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

Applied all, thanks.