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From:   Saravana Kannan <saravanak@google.com>
Date:   Thu, 23 Jun 2022 14:28:56 -0700
Message-ID: <CAGETcx8EsTWVQCFrw8vSs91i1LXj7Z1qW962ShxBDXwORwbHwA@mail.gmail.com>
Subject: Re: [PATCH] arm64: dts: imx8mp: drop dmas property for uart console
To:     Fabio Estevam <festevam@gmail.com>
Cc:     Sascha Hauer <s.hauer@pengutronix.de>,
        "Peng Fan (OSS)" <peng.fan@oss.nxp.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Shawn Guo <shawnguo@kernel.org>,
        NXP Linux Team <linux-imx@nxp.com>, hvilleneuve@dimonoff.com,
        Lucas Stach <l.stach@pengutronix.de>,
        abbaraju.manojsai@amarulasolutions.com,
        Jagan Teki <jagan@amarulasolutions.com>,
        Matteo Lisi <matteo.lisi@engicam.com>,
        Tim Harvey <tharvey@gateworks.com>,
        Teresa Remmet <t.remmet@phytec.de>,
        =?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>, t.remmet@phytec.deh,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Peng Fan <peng.fan@nxp.com>
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On Thu, Jun 23, 2022 at 1:51 PM Fabio Estevam <festevam@gmail.com> wrote:
>
> On Thu, Jun 23, 2022 at 3:58 PM Saravana Kannan <saravanak@google.com> wrote:
>
> > Will do. I'm looking at the serial console code and I don't see a
> > difference between earlycon= vs console= handling. And I know that
> > earlycon= doesn't go through the driver core and isn't affected by any
> > of this. If you have additional pointers on where console= is parsed,
> > feel free to pass it on. I'll continue poking at this.
>
> It seems to be parsed at uart_parse_earlycon() inside
> drivers/tty/serial/serial_core.c.

Turns out it's kernel/printk/printk.c

-Saravana