linux-kernel - Re: [PATCH v6 0/7] dd initial support for the i.MXRTxxxx SoC family starting from i.IMXRT1050 SoC.

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Date:   Wed, 22 Dec 2021 12:17:15 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Jesse Taube <mr.bossman075@...il.com>
Cc:     NXP Linux Team <linux-imx@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Dong Aisheng <aisheng.dong@....com>,
        Stefan Agner <stefan@...er.ch>,
        Linus Walleij <linus.walleij@...aro.org>,
        gregkh <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        SoC Team <soc@...nel.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Abel Vesa <abel.vesa@....com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        Giulio Benetti <giulio.benetti@...ettiengineering.com>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
        linux-clk <linux-clk@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>
Subject: Re: [PATCH v6 0/7] dd initial support for the i.MXRTxxxx SoC family
 starting from i.IMXRT1050 SoC.

On Wed, Dec 22, 2021 at 2:52 AM Jesse Taube <mr.bossman075@...il.com> wrote:
>
> This patchset contains:
> - i.MXRT10xx family infrastructure
> - i.MXRT1050 pinctrl driver adaption
> - i.MXRT1050 clock driver adaption
> - i.MXRT1050 sd-card driver adaption
> - i.MXRT1050 uart driver adaption
> - i.MXRT1050-evk basic support
>
> The i.MXRTxxxx family that could have support by Linux actually spreads
> from i.MXRT1020 to i.MXRT1170 with the first one supporting 1 USB OTG &
> 100M ethernet with a cortex-M7@...Mhz up to the latter with i.MXRT1170
> with cortex-M7@...z and cortex-M4@...Mhz, 2MB of internal SRAM, 2D GPU,
> 2x 1Gb and 1x 100Mb ENET. The i.MXRT family is NXP's answer to
> STM32F7XX, as it uses only simple SDRAM, it gives the chance of a 4 or
> less layer PCBs. Seeing that these chips are comparable to the
> STM32F7XXs which have linux ported to them it seems reasonable to add
> support for them.

I'm in the process of finalizing the pull requests for 5.16, this came
up since you
have soc@...nel.org on Cc, but it looks like you don't have an Ack for the
clock driver, and I have not heard from Shawn or Sasha about whether they
want to pick it up in a separate branch or I should pick it up.

I suggest we leave it for this time then, let's plan for 5.18 instead.

          Arnd