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From: Anton Kachalov <rnouse@google.com>
Date: Wed, 7 Oct 2020 21:52:25 +0200
Message-ID: <CADVsX8_9dCbBUdpaAtMpf59cmj9cTSn--mQLZaszFT_PeT-zLg@mail.gmail.com>
Subject: Re: How to change the default output serial
To: =?UTF-8?B?5YaJ6Zuq?= <869883681@qq.com>
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Hello, sgc.

You should also enable the uart2 in DTS:

arch/arm/boot/dts/aspeed-bmc-opp-romulus.dts

There is a code like:

&uart5 {
    status =3D "okay";
};

Change it to uart2 as well.

About the u-boot changes, it might be better to set:

#define CONFIG_CONS_INDEX 2
and define CONFIG_SYS_NS16550_COM2 value instead.

Which u-boot branch do you use? I've checked with v2016.05, there is only
include/configs/ast-g5.h and no ast-common.h at all.

On Mon, 21 Sep 2020 at 01:27, =E5=86=89=E9=9B=AA <869883681@qq.com> wrote:

> Hello there
> I am trying to use openbmc recently. The board uses uart2 as the output o=
f
> BMC. How can I change the default uart from uart5 to uart2?
> The image I compiled on the basis of romulus, first I modified
> aspeed-bmc-opp-romulus.dts, I opened the uart2 serial port in dts, and
> modified stdout-path=3D&uart2,bootargs =3D "console =3D ttyS1" in chosen.
> Then, I modified the include/config/ast-common.h file in uboot , #define
> CONFIG_SYS_NS16550_COM1 AST_UART2_BASE(whice is AST_UART0_BASE).
> Am I doing something wrong? Do you have any suggestion?
> Thanks!!
> sgc.
>

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<div dir=3D"ltr">Hello, sgc.<div><br></div><div>You should also enable the =
uart2 in DTS:</div><div><br></div><div>arch/arm/boot/dts/aspeed-bmc-opp-rom=
ulus.dts=C2=A0<br></div><div><br></div><div>There is a code like:</div><div=
><br></div><div>&amp;uart5 {<br>=C2=A0 =C2=A0 status =3D &quot;okay&quot;;<=
br>};<br></div><div><br></div><div>Change it to uart2 as well.</div><div><b=
r></div><div>About the u-boot changes, it might be better to set:</div><div=
><br></div><div>#define CONFIG_CONS_INDEX 2<br></div><div>and define=C2=A0C=
ONFIG_SYS_NS16550_COM2 value instead.</div><div><br></div><div>Which u-boot=
 branch do you use? I&#39;ve checked with v2016.05, there is only include/c=
onfigs/ast-g5.h and no ast-common.h at all.</div></div><br><div class=3D"gm=
ail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, 21 Sep 2020 at 01:=
27, =E5=86=89=E9=9B=AA &lt;<a href=3D"mailto:869883681@qq.com">869883681@qq=
.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1=
ex"><div><div>Hello there</div><div>I am trying to use openbmc recently. Th=
e board uses uart2 as the output of BMC. How can I change the default uart =
from uart5 to uart2?</div><div>The image I compiled on the basis of romulus=
, first I modified aspeed-bmc-opp-romulus.dts, I opened the uart2 serial po=
rt in dts, and modified stdout-path=3D&amp;uart2,bootargs =3D &quot;console=
 =3D ttyS1&quot; in chosen.</div><div>Then, I modified the include/config/a=
st-common.h file in uboot , #define CONFIG_SYS_NS16550_COM1 AST_UART2_BASE(=
whice is AST_UART0_BASE).</div><div>Am I doing something wrong? Do you have=
 any suggestion?</div><div>Thanks!!</div><div>sgc.</div></div></blockquote>=
</div>

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