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From: Arnd Bergmann <arnd@arndb.de>
To: Anson Huang <anson.huang@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>,
	Michael Turquette <mturquette@baylibre.com>,
	"oleksandr.suvorov@toradex.com" <oleksandr.suvorov@toradex.com>,
	Fabio Estevam <festevam@gmail.com>,
	linux-clk <linux-clk@vger.kernel.org>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Abel Vesa <abel.vesa@nxp.com>, YueHaibing <yuehaibing@huawei.com>,
	Russell King - ARM Linux <linux@armlinux.org.uk>,
	dl-linux-imx <linux-imx@nxp.com>,
	Dong Aisheng <dongas86@gmail.com>,
	Stefan Agner <stefan.agner@toradex.com>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Daniel Baluta <daniel.baluta@nxp.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Aisheng Dong <aisheng.dong@nxp.com>,
	Andy Duan <fugang.duan@nxp.com>, Stephen Boyd <sboyd@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Sascha Hauer <kernel@pengutronix.de>,
	Shawn Guo <shawnguo@kernel.org>
Subject: Re: [PATCH V3 04/10] clk: imx: Support building SCU clock driver as module
Date: Wed, 1 Jul 2020 10:46:06 +0200
Message-ID: <CAK8P3a1nxtFqytyTZjte-9UJQEZWp0eKF64v=E1LpgsG8R0h9w@mail.gmail.com> (raw)
In-Reply-To: <DB3PR0402MB3916E820EA1E9884DD0A08CFF56C0@DB3PR0402MB3916.eurprd04.prod.outlook.com>

On Wed, Jul 1, 2020 at 9:19 AM Anson Huang <anson.huang@nxp.com> wrote:
> > Subject: Re: [PATCH V3 04/10] clk: imx: Support building SCU clock driver as module
> > On Tue, Jun 30, 2020 at 5:16 AM Anson Huang <anson.huang@nxp.com> wrote:
> >
> > SCU clock driver is a common driver for all SCU based platforms.
> > Current i.MX8QXP SCU clock driver will be extended to support all future SCU
> > based platforms.
> > So theoretically clk-scu.o and clk-imx8qxp.o can be combined. LPCG  is
> > similar.
> > Maybe you can give a try as Arnd suggested.
> >
>
> Do we really need to link clk-scu and i.MX8QXP clock driver together just to avoid some export?

It was just meant to be easier than exporting a symbol and dealing with module
dependencies. If it's not easier, then don't.

> I met some build issues if using this method, the i.MX8QXP module build is OK, but other platforms
> like i.MX8MM/i.MX8MN/i.MX8MQ/i.MX8MP clock drivers are just skipped for build, even these
> i.MX8M clock config are existing in .config, anyone know why? Looks like the change in Makefile for
> i.MX8QXP clock driver introduce this issue.

You have a ":=" instead of "+=" typo, so all earlier "+=" are ignored:

> obj-$(CONFIG_CLK_IMX8MM) += clk-imx8mm.o
> obj-$(CONFIG_CLK_IMX8MN) += clk-imx8mn.o
> obj-$(CONFIG_CLK_IMX8MP) += clk-imx8mp.o
> obj-$(CONFIG_CLK_IMX8MQ) += clk-imx8mq.o
>
> obj-$(CONFIG_MXC_CLK_SCU) := clk-imx-scu.o clk-imx-lpcg-scu.o

                                   ^^^^^^^^

      Arnd

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Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-29  5:53 [PATCH V3 00/10] Support building i.MX8 SoCs " Anson Huang
2020-06-29  5:53 ` [PATCH V3 01/10] clk: composite: Export clk_hw_register_composite() Anson Huang
2020-06-29  5:53 ` [PATCH V3 02/10] init.h: Fix the __setup_param() macro for module build Anson Huang
2020-06-29 11:33   ` Arnd Bergmann
2020-06-29 11:40     ` Anson Huang
2020-06-29 11:58       ` Arnd Bergmann
2020-07-01  5:14         ` Anson Huang
2020-07-01  8:37           ` Arnd Bergmann
2020-07-01  9:27             ` Anson Huang
2020-07-01  9:53               ` Arnd Bergmann
2020-07-01 10:02                 ` Anson Huang
2020-07-01 10:13                   ` Arnd Bergmann
2020-07-01 10:20                     ` Anson Huang
2020-06-29  5:53 ` [PATCH V3 03/10] ARM: imx: Select MXC_CLK for each SoC Anson Huang
2020-06-29  7:27   ` Aisheng Dong
2020-06-29  8:21     ` Anson Huang
2020-06-29  5:53 ` [PATCH V3 04/10] clk: imx: Support building SCU clock driver as module Anson Huang
2020-06-29 11:37   ` Arnd Bergmann
2020-06-29 12:53     ` Anson Huang
2020-06-29 13:20       ` Arnd Bergmann
2020-06-29 14:52         ` Anson Huang
2020-06-29 15:08           ` Arnd Bergmann
2020-06-29 15:19             ` Anson Huang
2020-06-30  3:55               ` Dong Aisheng
2020-07-01  7:19                 ` Anson Huang
2020-07-01  8:46                   ` Arnd Bergmann [this message]
2020-07-01  9:28                     ` Anson Huang
2020-07-01  9:40                       ` Anson Huang
2020-07-01  9:54                         ` Arnd Bergmann
2020-06-30  3:36         ` Dong Aisheng
2020-06-29  5:53 ` [PATCH V3 05/10] clk: imx: Support building i.MX common " Anson Huang
2020-06-29  5:53 ` [PATCH V3 06/10] clk: imx8mm: Support module build Anson Huang
2020-06-29  5:53 ` [PATCH V3 07/10] clk: imx8mn: " Anson Huang
2020-06-29  5:54 ` [PATCH V3 08/10] clk: imx8mp: " Anson Huang
2020-06-29  5:54 ` [PATCH V3 09/10] clk: imx8mq: " Anson Huang
2020-06-29  5:54 ` [PATCH V3 10/10] clk: imx8qxp: " Anson Huang
2020-06-29 11:40   ` Arnd Bergmann
2020-06-29 11:43     ` Anson Huang
2020-06-29 11:58       ` Arnd Bergmann

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