From: Aisheng Dong <aisheng.dong@nxp.com>
To: Arnd Bergmann <arnd@arndb.de>, Dong Aisheng <dongas86@gmail.com>
Cc: Stephen Boyd <sboyd@kernel.org>, Abel Vesa <abel.vesa@nxp.com>,
Andy Duan <fugang.duan@nxp.com>,
Anson Huang <anson.huang@nxp.com>,
Daniel Baluta <daniel.baluta@nxp.com>,
Leonard Crestez <leonard.crestez@nxp.com>,
Peng Fan <peng.fan@nxp.com>,
Stefan Agner <stefan.agner@toradex.com>,
Allison Randal <allison@lohutok.net>,
Fabio Estevam <festevam@gmail.com>,
gregkh <gregkh@linuxfoundation.org>,
Enrico Weigelt <info@metux.net>,
Sascha Hauer <kernel@pengutronix.de>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
linux-clk <linux-clk@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>,
Russell King <linux@armlinux.org.uk>,
Michael Turquette <mturquette@baylibre.com>,
"oleksandr.suvorov@toradex.com" <oleksandr.suvorov@toradex.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Shawn Guo <shawnguo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
YueHaibing <yuehaibing@huawei.com>,
dl-linux-imx <linux-imx@nxp.com>
Subject: RE: [PATCH V2 3/9] clk: imx: Support building SCU clock driver as module
Date: Tue, 30 Jun 2020 03:01:46 +0000 [thread overview]
Message-ID: <AM6PR04MB496607DD6E1B76E1B3A79C67806F0@AM6PR04MB4966.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <CAK8P3a2-1nFvw2rR1wws04fCmj6AyvcJ4RFwcJQ+xRPwDjUCaA@mail.gmail.com>
> From: Arnd Bergmann <arnd@arndb.de>
> Sent: Monday, June 29, 2020 4:20 PM
>
> On Mon, Jun 29, 2020 at 9:18 AM Dong Aisheng <dongas86@gmail.com>
> wrote:
> > On Thu, Jun 25, 2020 at 6:43 AM Stephen Boyd <sboyd@kernel.org> wrote:
> > > Quoting Aisheng Dong (2020-06-23 19:59:09) Why aren't there options
> > > to enable clk-imx6q and clk-imx6sl in the clk/imx/Kconfig file?
> > > Those can be bool or tristate depending on if the SoC drivers use
> > > CLK_OF_DECLARE or not and depend on the mxc-clk library and SoC
> > > config we have in the makefile today.
> >
> > Yes, we can do that in clk/imx/Kconfig as follows theoretically.
> > config CLK_IMX6Q
> > bool
> > def_bool ARCH_MXC && ARM
> > select MXC_CLK
> >
> > But we have totally 15 platforms that need to change.
>
> I would make that
>
> config CLK_IMX6Q
> bool "Clock driver for NXP i.MX6Q"
> depends on SOC_IMX6Q || COMPILE_TEST
> default SOC_IMX6Q
> select MXC_CLK
>
Yes, this seems better.
Anson, pls follow this way.
> > e.g.
> > drivers/clk/imx/Makefile
> > obj-$(CONFIG_SOC_IMX1) += clk-imx1.o
> > obj-$(CONFIG_SOC_IMX21) += clk-imx21.o
> > obj-$(CONFIG_SOC_IMX25) += clk-imx25.o
> > obj-$(CONFIG_SOC_IMX27) += clk-imx27.o
> > obj-$(CONFIG_SOC_IMX31) += clk-imx31.o
> > obj-$(CONFIG_SOC_IMX35) += clk-imx35.o
> > obj-$(CONFIG_SOC_IMX5) += clk-imx5.o
> > obj-$(CONFIG_SOC_IMX6Q) += clk-imx6q.o
> > obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o
> > obj-$(CONFIG_SOC_IMX6SLL) += clk-imx6sll.o
> > obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o
> > obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o
> > obj-$(CONFIG_SOC_IMX7D) += clk-imx7d.o
> > obj-$(CONFIG_SOC_IMX7ULP) += clk-imx7ulp.o
> > obj-$(CONFIG_SOC_VF610) += clk-vf610.o
> >
> > Not sure if it's really worth to do that.
> > The easiest way to address this issue is just select it in
> > arch/arm/mach-imx/Kconfig,
>
> Changing them can be a one or two patches, that's totally worth it IMHO.
>
> I really don't like the 'select' in arch/arm/mach-imx/Kconfig: if you've done the
> work to make the imx8 clk driver modular, I would expect to see the same at
> least tried for the other ones.
>
Got it.
> For the clk drivers that cannot yet be 'tristate' because of the
> CLK_OF_DECLARE(), can you include a list of drivers that depend on the clocks
> being available during early boot?
>
I guess we can find out them one by one for those 15 platforms when converting them
to modules as well. Currently we're converting ARM64 clock drivers first.
Regards
Aisheng
> Arnd
next prev parent reply other threads:[~2020-06-30 3:01 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-09 7:32 [PATCH V2 0/9] Support building i.MX8 SoCs clock driver as module Anson Huang
2020-06-09 7:32 ` [PATCH V2 1/9] clk: composite: Export clk_hw_register_composite() Anson Huang
2020-06-17 10:10 ` Aisheng Dong
2020-06-17 12:31 ` Anson Huang
2020-06-18 2:05 ` Aisheng Dong
2020-06-20 3:22 ` Stephen Boyd
2020-06-09 7:32 ` [PATCH V2 2/9] ARM: imx: Select MXC_CLK for ARCH_MXC Anson Huang
2020-06-17 10:34 ` Aisheng Dong
2020-06-17 12:36 ` Anson Huang
2020-06-18 3:09 ` Aisheng Dong
2020-06-18 3:18 ` Anson Huang
2020-06-18 3:58 ` Aisheng Dong
2020-06-09 7:32 ` [PATCH V2 3/9] clk: imx: Support building SCU clock driver as module Anson Huang
2020-06-17 10:44 ` Aisheng Dong
2020-06-17 12:26 ` Anson Huang
2020-06-18 1:58 ` Aisheng Dong
2020-06-20 3:27 ` Stephen Boyd
2020-06-23 3:42 ` Aisheng Dong
2020-06-23 8:34 ` Stephen Boyd
2020-06-23 9:00 ` Aisheng Dong
2020-06-24 0:57 ` Stephen Boyd
2020-06-24 2:19 ` Aisheng Dong
2020-06-24 2:36 ` Anson Huang
2020-06-24 2:59 ` Aisheng Dong
2020-06-24 22:43 ` Stephen Boyd
2020-06-29 7:04 ` Dong Aisheng
2020-06-29 8:19 ` Arnd Bergmann
2020-06-30 3:01 ` Aisheng Dong [this message]
2020-06-30 4:41 ` Anson Huang
[not found] ` <159346473301.62212.686512161256425690@swboyd.mtv.corp.google.com>
2020-07-02 6:15 ` Anson Huang
2020-06-24 7:46 ` Arnd Bergmann
2020-06-24 9:18 ` Aisheng Dong
2020-06-09 7:32 ` [PATCH V2 4/9] clk: imx: Support building i.MX common " Anson Huang
2020-06-22 7:05 ` Stephen Boyd
2020-06-09 7:32 ` [PATCH V2 5/9] clk: imx8mm: Support module build Anson Huang
2020-06-09 7:32 ` [PATCH V2 6/9] clk: imx8mn: " Anson Huang
2020-06-09 7:32 ` [PATCH V2 7/9] clk: imx8mp: " Anson Huang
2020-06-09 7:32 ` [PATCH V2 8/9] clk: imx8mq: " Anson Huang
2020-06-09 7:32 ` [PATCH V2 9/9] clk: imx8qxp: " Anson Huang
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