From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
To: Thomas Hebb <tommyhebb@gmail.com>
Cc: linux-kernel@vger.kernel.org,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org (moderated
list:ARM/Synaptics Berlin SoC support),
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS)
Subject: Re: [PATCH] ARM: dts: berlin: switch to earlycon
Date: Wed, 4 Jul 2018 17:14:35 +0800 [thread overview]
Message-ID: <20180704171435.6b6113de@xhacker.debian> (raw)
In-Reply-To: <7f67507ad697fc8c6d012f734c4d9a631d1afad1.1527608389.git.tommyhebb@gmail.com>
Hi Thomas,
On Tue, 29 May 2018 11:41:42 -0400 Thomas Hebb wrote:
> The Synopsys DesignWare 8250 UART in Berlin SoCs is now supported by
> 8250_early, so we can use earlycon for early console output instead
> of earlyprintk, which requires an SoC-specific kernel.
IIRC, earlyprintk still works during the decompress progress while the
earlycon doesn't.
>
> Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
> ---
> arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts | 2 +-
> arch/arm/boot/dts/berlin2cd-google-chromecast.dts | 2 +-
> arch/arm/boot/dts/berlin2q-marvell-dmp.dts | 2 +-
> 3 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts b/arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts
> index 1c475796d17f..f98798bb684f 100644
> --- a/arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts
> +++ b/arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts
> @@ -45,7 +45,7 @@
> compatible = "sony,nsz-gs7", "marvell,berlin2", "marvell,berlin";
>
> chosen {
> - bootargs = "earlyprintk";
> + bootargs = "earlycon";
Is there something missing here? example, uart8250,mmio,<addr>?
> stdout-path = "serial0:115200n8";
> };
>
> diff --git a/arch/arm/boot/dts/berlin2cd-google-chromecast.dts b/arch/arm/boot/dts/berlin2cd-google-chromecast.dts
> index ca24def0ce13..20f31cdeaf38 100644
> --- a/arch/arm/boot/dts/berlin2cd-google-chromecast.dts
> +++ b/arch/arm/boot/dts/berlin2cd-google-chromecast.dts
> @@ -46,7 +46,7 @@
> compatible = "google,chromecast", "marvell,berlin2cd", "marvell,berlin";
>
> chosen {
> - bootargs = "earlyprintk";
> + bootargs = "earlycon";
> stdout-path = "serial0:115200n8";
> };
>
> diff --git a/arch/arm/boot/dts/berlin2q-marvell-dmp.dts b/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
> index 57aa5f8a7c77..9834e84a0797 100644
> --- a/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
> +++ b/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
> @@ -49,7 +49,7 @@
> };
>
> chosen {
> - bootargs = "earlyprintk";
> + bootargs = "earlycon";
> stdout-path = "serial0:115200n8";
> };
>
next prev parent reply other threads:[~2018-07-04 9:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-29 15:41 [PATCH] ARM: dts: berlin: switch to earlycon Thomas Hebb
2018-07-04 9:14 ` Jisheng Zhang [this message]
2018-07-04 21:14 ` Tom Hebb
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180704171435.6b6113de@xhacker.debian \
--to=jisheng.zhang@synaptics.com \
--cc=devicetree@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=robh+dt@kernel.org \
--cc=sebastian.hesselbarth@gmail.com \
--cc=tommyhebb@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).