From: Arnd Bergmann <arnd@arndb.de>
To: Abel Vesa <abel.vesa@nxp.com>
Cc: Rob Herring <robh@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <kernel@pengutronix.de>,
Fabio Estevam <fabio.estevam@nxp.com>,
Mike Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Lee Jones <lee.jones@linaro.org>,
Anson Huang <anson.huang@nxp.com>,
Leonard Crestez <leonard.crestez@nxp.com>,
Peng Fan <peng.fan@nxp.com>, Jacky Bai <ping.bai@nxp.com>,
NXP Linux Team <linux-imx@nxp.com>,
DTML <devicetree@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-clk <linux-clk@vger.kernel.org>
Subject: Re: [RFC 00/11] Add generic MFD i.MX mix and audiomix support
Date: Thu, 16 Apr 2020 13:06:57 +0200 [thread overview]
Message-ID: <CAK8P3a26JS4FVt5wiaRQahF+OJZp9Ot84o8GSth9Rk2skkEMSQ@mail.gmail.com> (raw)
In-Reply-To: <CAK8P3a3FLRotVmMnBAyBKFMbXeEx760S-Cvqr19VPMi81PKJgw@mail.gmail.com>
On Thu, Apr 16, 2020 at 1:06 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Tue, Mar 3, 2020 at 10:04 AM Abel Vesa <abel.vesa@nxp.com> wrote:
> >
> > The i.MX8MP has some new IPs called mixes. They are formed usually by some
> > GPRs that can be split into different functionalities. The first example
> > here is the audiomix which has dedicated registers that can be registered
> > as a clock controller and some other registers that can be registered as
> > a reset controller, plus some dedicated ones that will be registered as
> > syscon and used by each dedicated audio IP.
> >
> > More mixes to be following the same structure are to come, like hdmimix,
> > dispmix and mediamix. They will all be populated and registered by the MFD
> > imx-mix generic driver.
>
> Can you enumerate what functionality is in each one?
>
> I'm not convinced that using an MFD driver is the best solution here,
> compared to e.g. a clk driver with a few extra bits in it, if most of the
> code for the child drivers ends up being for the clk subsystem.
>
> Lee suggested maybe having a generic (platform independent) driver
> for it, which may help here, as it would let others share the trivial
> mfd portion.
>
> Another option that we are using on several platforms today is to
> have a single syscon node and have other drivers that reference
> that one using a phandle to get at the regmap.
Sorry I replied to the wrong thread, I meant to reply to the v3 version.
Arnd
prev parent reply other threads:[~2020-04-16 11:31 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-03 9:03 [RFC 00/11] Add generic MFD i.MX mix and audiomix support Abel Vesa
2020-03-03 9:03 ` [RFC 01/11] mfd: Add i.MX generic mix support Abel Vesa
2020-03-26 11:03 ` Lee Jones
2020-03-26 12:30 ` Abel Vesa
2020-03-03 9:03 ` [RFC 02/11] arm64: dts: imx8mp: Add AIPS 4 and 5 Abel Vesa
2020-03-13 7:44 ` Peng Fan
2020-03-23 10:48 ` Abel Vesa
2020-03-03 9:03 ` [RFC 03/11] arm64: dts: imx8mp: Add audiomix node Abel Vesa
2020-03-03 9:03 ` [RFC 04/11] clk: imx: Add gate shared for i.MX8MP audiomix Abel Vesa
2020-03-13 7:47 ` Peng Fan
2020-03-03 9:03 ` [RFC 05/11] clk: imx: pll14xx: Add the device as argument when registering Abel Vesa
2020-03-13 7:50 ` Peng Fan
2020-03-21 0:46 ` Stephen Boyd
2020-03-03 9:03 ` [RFC 06/11] clk: imx: Add helpers for passing the device as argument Abel Vesa
2020-03-13 7:58 ` Peng Fan
2020-03-21 0:46 ` Stephen Boyd
2020-03-03 9:03 ` [RFC 07/11] dt-bindings: clocks: imx8mp: Add ids for audiomix clocks Abel Vesa
2020-03-10 20:17 ` Rob Herring
2020-03-21 0:51 ` Stephen Boyd
2020-03-03 9:03 ` [RFC 08/11] clk: imx: Add audiomix clock controller support Abel Vesa
2020-03-21 0:51 ` Stephen Boyd
2020-03-03 9:03 ` [RFC 09/11] arm64: dts: imx8mp: Add audiomix clock controller node Abel Vesa
2020-03-03 9:03 ` [RFC 10/11] reset: imx: Add audiomix reset controller support Abel Vesa
2020-03-04 11:41 ` Philipp Zabel
2020-03-13 14:16 ` Abel Vesa
2020-03-13 15:55 ` Philipp Zabel
2020-03-18 11:08 ` Abel Vesa
2020-03-10 20:19 ` Rob Herring
2020-03-03 9:03 ` [RFC 11/11] arm64: dts: imx8mp: Add audiomix reset controller node Abel Vesa
2020-04-16 11:06 ` [RFC 00/11] Add generic MFD i.MX mix and audiomix support Arnd Bergmann
2020-04-16 11:06 ` Arnd Bergmann [this message]
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