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* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
  0 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: geert+renesas, horms
  Cc: devicetree, linux-arm-kernel, linux-sh, linux-renesas-soc,
	linux-arm-kernel, laurent.pinchart+renesas, magnus.damm,
	kuninori.morimoto.gx, yoshihiro.shimoda.uh

From: Bui Duc Phuc <phucduc.bui@gmail.com>

Hi, Everyone!  

I have a patch for the armadillo board device-tree.
Please consider this patch.

Best regards.

Bui Duc Phuc (1):
  ARM:dts:armadillo800eva: Add console parametters

 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.7.4

^ permalink raw reply	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
  0 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: linux-arm-kernel

From: Bui Duc Phuc <phucduc.bui@gmail.com>

Hi, Everyone!  

I have a patch for the armadillo board device-tree.
Please consider this patch.

Best regards.

Bui Duc Phuc (1):
  ARM:dts:armadillo800eva: Add console parametters

 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.7.4


^ permalink raw reply	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
  0 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: linux-arm-kernel

From: Bui Duc Phuc <phucduc.bui@gmail.com>

Hi, Everyone!  

I have a patch for the armadillo board device-tree.
Please consider this patch.

Best regards.

Bui Duc Phuc (1):
  ARM:dts:armadillo800eva: Add console parametters

 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.7.4

^ permalink raw reply	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
  2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
  (?)
  (?)
@ 2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
  -1 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: geert+renesas, horms
  Cc: devicetree, linux-arm-kernel, linux-sh, linux-renesas-soc,
	linux-arm-kernel, laurent.pinchart+renesas, magnus.damm,
	kuninori.morimoto.gx, yoshihiro.shimoda.uh

From: Bui Duc Phuc <phucduc.bui@gmail.com>

After the kernel boot, the login prompt doesn't appear.
This patch will add console parametters to bootargs to fix it.

Signed-off-by: Bui Duc Phuc <phucduc.bui@gmail.com>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
index 1788e18..d383b37 100644
--- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
@@ -24,7 +24,8 @@
 	};
 
 	chosen {
-		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
+		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
+				ignore_loglevel root=/dev/nfs ip=dhcp rw";
 		stdout-path = "serial0:115200n8";
 	};
 
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
  0 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: linux-arm-kernel

From: Bui Duc Phuc <phucduc.bui@gmail.com>

After the kernel boot, the login prompt doesn't appear.
This patch will add console parametters to bootargs to fix it.

Signed-off-by: Bui Duc Phuc <phucduc.bui@gmail.com>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
index 1788e18..d383b37 100644
--- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
@@ -24,7 +24,8 @@
 	};
 
 	chosen {
-		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
+		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
+				ignore_loglevel root=/dev/nfs ip=dhcp rw";
 		stdout-path = "serial0:115200n8";
 	};
 
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
  0 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ, horms-/R6kz+dDXgpPR4JQBCEnsQ
  Cc: devicetree-u79uwXL29TY76Z2rM5mHXA,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
	linux-sh-u79uwXL29TY76Z2rM5mHXA,
	linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA,
	linux-arm-kernel-u79uwXL29TY76Z2rM5mHXA,
	laurent.pinchart+renesas-ryLnwIuWjnjg/C1BVhZhaw,
	magnus.damm-Re5JQEeQqe8AvxtiuMwx3w,
	kuninori.morimoto.gx-zM6kxYcvzFBBDgjK7y7TUQ,
	yoshihiro.shimoda.uh-zM6kxYcvzFBBDgjK7y7TUQ

From: Bui Duc Phuc <phucduc.bui-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

After the kernel boot, the login prompt doesn't appear.
This patch will add console parametters to bootargs to fix it.

Signed-off-by: Bui Duc Phuc <phucduc.bui-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
index 1788e18..d383b37 100644
--- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
@@ -24,7 +24,8 @@
 	};
 
 	chosen {
-		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
+		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
+				ignore_loglevel root=/dev/nfs ip=dhcp rw";
 		stdout-path = "serial0:115200n8";
 	};
 
-- 
2.7.4

--
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^ permalink raw reply related	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
  0 siblings, 0 replies; 16+ messages in thread
From: Bui Duc Phuc (Fukuda) @ 2017-08-06 13:55 UTC (permalink / raw)
  To: linux-arm-kernel

From: Bui Duc Phuc <phucduc.bui@gmail.com>

After the kernel boot, the login prompt doesn't appear.
This patch will add console parametters to bootargs to fix it.

Signed-off-by: Bui Duc Phuc <phucduc.bui@gmail.com>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
index 1788e18..d383b37 100644
--- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
@@ -24,7 +24,8 @@
 	};
 
 	chosen {
-		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
+		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
+				ignore_loglevel root=/dev/nfs ip=dhcp rw";
 		stdout-path = "serial0:115200n8";
 	};
 
-- 
2.7.4

^ permalink raw reply related	[flat|nested] 16+ messages in thread
* Re: [PATCH] ARM:dts:armadillo800eva: Add console parametters
  2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
  (?)
@ 2017-08-07  7:59     ` Simon Horman
  -1 siblings, 0 replies; 16+ messages in thread
From: Simon Horman @ 2017-08-07  7:59 UTC (permalink / raw)
  To: Bui Duc Phuc (Fukuda)
  Cc: geert+renesas, devicetree, linux-arm-kernel, linux-sh,
	linux-renesas-soc, linux-arm-kernel, laurent.pinchart+renesas,
	magnus.damm, kuninori.morimoto.gx, yoshihiro.shimoda.uh

On Sun, Aug 06, 2017 at 08:55:02PM +0700, Bui Duc Phuc (Fukuda) wrote:
> From: Bui Duc Phuc <phucduc.bui@gmail.com>
> 
> After the kernel boot, the login prompt doesn't appear.
> This patch will add console parametters to bootargs to fix it.
> 
> Signed-off-by: Bui Duc Phuc <phucduc.bui@gmail.com>
> ---
>  arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> index 1788e18..d383b37 100644
> --- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> +++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> @@ -24,7 +24,8 @@
>  	};
>  
>  	chosen {
> -		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
> +		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
> +				ignore_loglevel root=/dev/nfs ip=dhcp rw";
>  		stdout-path = "serial0:115200n8";
>  	};

Hi,

this feels wrong. My understanding is that stdout-path should be enough
to get the console.

^ permalink raw reply	[flat|nested] 16+ messages in thread
* Re: [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-07  7:59     ` Simon Horman
  0 siblings, 0 replies; 16+ messages in thread
From: Simon Horman @ 2017-08-07  7:59 UTC (permalink / raw)
  To: linux-arm-kernel

On Sun, Aug 06, 2017 at 08:55:02PM +0700, Bui Duc Phuc (Fukuda) wrote:
> From: Bui Duc Phuc <phucduc.bui@gmail.com>
> 
> After the kernel boot, the login prompt doesn't appear.
> This patch will add console parametters to bootargs to fix it.
> 
> Signed-off-by: Bui Duc Phuc <phucduc.bui@gmail.com>
> ---
>  arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> index 1788e18..d383b37 100644
> --- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> +++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> @@ -24,7 +24,8 @@
>  	};
>  
>  	chosen {
> -		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
> +		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
> +				ignore_loglevel root=/dev/nfs ip=dhcp rw";
>  		stdout-path = "serial0:115200n8";
>  	};

Hi,

this feels wrong. My understanding is that stdout-path should be enough
to get the console.

^ permalink raw reply	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-07  7:59     ` Simon Horman
  0 siblings, 0 replies; 16+ messages in thread
From: Simon Horman @ 2017-08-07  7:59 UTC (permalink / raw)
  To: linux-arm-kernel

On Sun, Aug 06, 2017 at 08:55:02PM +0700, Bui Duc Phuc (Fukuda) wrote:
> From: Bui Duc Phuc <phucduc.bui@gmail.com>
> 
> After the kernel boot, the login prompt doesn't appear.
> This patch will add console parametters to bootargs to fix it.
> 
> Signed-off-by: Bui Duc Phuc <phucduc.bui@gmail.com>
> ---
>  arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> index 1788e18..d383b37 100644
> --- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> +++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
> @@ -24,7 +24,8 @@
>  	};
>  
>  	chosen {
> -		bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
> +		bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
> +				ignore_loglevel root=/dev/nfs ip=dhcp rw";
>  		stdout-path = "serial0:115200n8";
>  	};

Hi,

this feels wrong. My understanding is that stdout-path should be enough
to get the console.

^ permalink raw reply	[flat|nested] 16+ messages in thread
* Re: [PATCH] ARM:dts:armadillo800eva: Add console parametters
       [not found]     ` <CAABR9nHUuSw7m6BCBxDs28YtppHxwHNQR5f06H0n8xcXKx7gCw@mail.gmail.com>
  2017-08-10  8:12         ` Kuninori Morimoto
@ 2017-08-10  8:12         ` Kuninori Morimoto
  0 siblings, 0 replies; 16+ messages in thread
From: Kuninori Morimoto @ 2017-08-10  8:12 UTC (permalink / raw)
  To: Bui Duc Phuc, Simon Horman
  Cc: geert+renesas, devicetree, linux-arm-kernel, linux-sh,
	linux-renesas-soc, linux-arm-kernel, laurent.pinchart+renesas,
	Magnus Damm, Yoshihiro Shimoda


Hi Simon

>     >       chosen {
>     > -             bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
>     > +             bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
>     > +                             ignore_loglevel root=/dev/nfs ip=dhcp rw";
>     >               stdout-path = "serial0:115200n8";
>     >       };
>    
>     Hi,
>    
>     this feels wrong. My understanding is that stdout-path should be enough
>     to get the console.
(snip)
> Thank you for your comment.
> Before creating this patch, I have a patch reference of you and Geert.
> https://patchwork.kernel.org/patch/5184001/

I think he want to say here is that it needs "console=" which
is indicated by Geert on https://patchwork.kernel.org/patch/5184001/

	"Note that we have to keep the "console=ttySC1" parameter in
	chosen/bootargs, ..."

I don't have armadillo800eva anymore, so I can't test this patch.
But according to Phuc-san, there is not command prompt after boot
without this patch.

Best regards
---
Kuninori Morimoto

^ permalink raw reply	[flat|nested] 16+ messages in thread
* Re: [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-10  8:12         ` Kuninori Morimoto
  0 siblings, 0 replies; 16+ messages in thread
From: Kuninori Morimoto @ 2017-08-10  8:12 UTC (permalink / raw)
  To: linux-arm-kernel


Hi Simon

>     >       chosen {
>     > -             bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
>     > +             bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
>     > +                             ignore_loglevel root=/dev/nfs ip=dhcp rw";
>     >               stdout-path = "serial0:115200n8";
>     >       };
>    
>     Hi,
>    
>     this feels wrong. My understanding is that stdout-path should be enough
>     to get the console.
(snip)
> Thank you for your comment.
> Before creating this patch, I have a patch reference of you and Geert.
> https://patchwork.kernel.org/patch/5184001/

I think he want to say here is that it needs "console=" which
is indicated by Geert on https://patchwork.kernel.org/patch/5184001/

	"Note that we have to keep the "console=ttySC1" parameter in
	chosen/bootargs, ..."

I don't have armadillo800eva anymore, so I can't test this patch.
But according to Phuc-san, there is not command prompt after boot
without this patch.

Best regards
---
Kuninori Morimoto

^ permalink raw reply	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-10  8:12         ` Kuninori Morimoto
  0 siblings, 0 replies; 16+ messages in thread
From: Kuninori Morimoto @ 2017-08-10  8:12 UTC (permalink / raw)
  To: linux-arm-kernel


Hi Simon

>     >       chosen {
>     > -             bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
>     > +             bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
>     > +                             ignore_loglevel root=/dev/nfs ip=dhcp rw";
>     >               stdout-path = "serial0:115200n8";
>     >       };
>    
>     Hi,
>    
>     this feels wrong. My understanding is that stdout-path should be enough
>     to get the console.
(snip)
> Thank you for your comment.
> Before creating this patch, I have a patch reference of you and Geert.
> https://patchwork.kernel.org/patch/5184001/

I think he want to say here is that it needs "console=" which
is indicated by Geert on https://patchwork.kernel.org/patch/5184001/

	"Note that we have to keep the "console=ttySC1" parameter in
	chosen/bootargs, ..."

I don't have armadillo800eva anymore, so I can't test this patch.
But according to Phuc-san, there is not command prompt after boot
without this patch.

Best regards
---
Kuninori Morimoto

^ permalink raw reply	[flat|nested] 16+ messages in thread
* Re: [PATCH] ARM:dts:armadillo800eva: Add console parametters
  2017-08-10  8:12         ` Kuninori Morimoto
  (?)
@ 2017-08-10  8:25           ` Geert Uytterhoeven
  -1 siblings, 0 replies; 16+ messages in thread
From: Geert Uytterhoeven @ 2017-08-10  8:25 UTC (permalink / raw)
  To: Kuninori Morimoto
  Cc: Bui Duc Phuc, Simon Horman, Geert Uytterhoeven, devicetree,
	linux-arm-kernel, Linux-sh list, Linux-Renesas, linux-arm-kernel,
	Laurent Pinchart, Magnus Damm, Yoshihiro Shimoda

Hi Morimoto-san, Phuc-san,

On Thu, Aug 10, 2017 at 10:12 AM, Kuninori Morimoto
<kuninori.morimoto.gx@renesas.com> wrote:
>>     >       chosen {
>>     > -             bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
>>     > +             bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
>>     > +                             ignore_loglevel root=/dev/nfs ip=dhcp rw";
>>     >               stdout-path = "serial0:115200n8";
>>     >       };
>>
>>     Hi,
>>
>>     this feels wrong. My understanding is that stdout-path should be enough
>>     to get the console.
> (snip)
>> Thank you for your comment.
>> Before creating this patch, I have a patch reference of you and Geert.
>> https://patchwork.kernel.org/patch/5184001/
>
> I think he want to say here is that it needs "console=" which
> is indicated by Geert on https://patchwork.kernel.org/patch/5184001/
>
>         "Note that we have to keep the "console=ttySC1" parameter in
>         chosen/bootargs, ..."

        "... else we only get console messages on tty0, and because
        this DTS is shared between legacy and multi-platform."

That was needed at the time of commit 2c32622c3f3f9c7e ("ARM:
shmobile: armadillo800eva dts: Add chosen/stdout-path").

Due to generic DT/console updates later, the "console=" parameters were
no longer needed, cfr. commit 1403e38b829acdad ("ARM: dts: armadillo800eva:
Update console parameters").

> I don't have armadillo800eva anymore, so I can't test this patch.
> But according to Phuc-san, there is not command prompt after boot
> without this patch.

I'm quite sure I do get console output on both ttyS0 and tty0 with the current
kernel (can't test right now due to board farm move/restructuring).

For a userspace prompt, I guess Phuc-san uses /dev/console as the console
device in e.g. /etc/inittab (or an equivalent)? If you want a prompt on tty0,
you better specify /dev/tty0 instead of /dev/console.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

^ permalink raw reply	[flat|nested] 16+ messages in thread
* Re: [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-10  8:25           ` Geert Uytterhoeven
  0 siblings, 0 replies; 16+ messages in thread
From: Geert Uytterhoeven @ 2017-08-10  8:25 UTC (permalink / raw)
  To: linux-arm-kernel

Hi Morimoto-san, Phuc-san,

On Thu, Aug 10, 2017 at 10:12 AM, Kuninori Morimoto
<kuninori.morimoto.gx@renesas.com> wrote:
>>     >       chosen {
>>     > -             bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
>>     > +             bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
>>     > +                             ignore_loglevel root=/dev/nfs ip=dhcp rw";
>>     >               stdout-path = "serial0:115200n8";
>>     >       };
>>
>>     Hi,
>>
>>     this feels wrong. My understanding is that stdout-path should be enough
>>     to get the console.
> (snip)
>> Thank you for your comment.
>> Before creating this patch, I have a patch reference of you and Geert.
>> https://patchwork.kernel.org/patch/5184001/
>
> I think he want to say here is that it needs "console=" which
> is indicated by Geert on https://patchwork.kernel.org/patch/5184001/
>
>         "Note that we have to keep the "console=ttySC1" parameter in
>         chosen/bootargs, ..."

        "... else we only get console messages on tty0, and because
        this DTS is shared between legacy and multi-platform."

That was needed at the time of commit 2c32622c3f3f9c7e ("ARM:
shmobile: armadillo800eva dts: Add chosen/stdout-path").

Due to generic DT/console updates later, the "console=" parameters were
no longer needed, cfr. commit 1403e38b829acdad ("ARM: dts: armadillo800eva:
Update console parameters").

> I don't have armadillo800eva anymore, so I can't test this patch.
> But according to Phuc-san, there is not command prompt after boot
> without this patch.

I'm quite sure I do get console output on both ttyS0 and tty0 with the current
kernel (can't test right now due to board farm move/restructuring).

For a userspace prompt, I guess Phuc-san uses /dev/console as the console
device in e.g. /etc/inittab (or an equivalent)? If you want a prompt on tty0,
you better specify /dev/tty0 instead of /dev/console.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

^ permalink raw reply	[flat|nested] 16+ messages in thread
* [PATCH] ARM:dts:armadillo800eva: Add console parametters
@ 2017-08-10  8:25           ` Geert Uytterhoeven
  0 siblings, 0 replies; 16+ messages in thread
From: Geert Uytterhoeven @ 2017-08-10  8:25 UTC (permalink / raw)
  To: linux-arm-kernel

Hi Morimoto-san, Phuc-san,

On Thu, Aug 10, 2017 at 10:12 AM, Kuninori Morimoto
<kuninori.morimoto.gx@renesas.com> wrote:
>>     >       chosen {
>>     > -             bootargs = "earlyprintk ignore_loglevel root=/dev/nfs ip=dhcp rw";
>>     > +             bootargs = "console=tty0 console=ttySC0,115200 earlyprintk
>>     > +                             ignore_loglevel root=/dev/nfs ip=dhcp rw";
>>     >               stdout-path = "serial0:115200n8";
>>     >       };
>>
>>     Hi,
>>
>>     this feels wrong. My understanding is that stdout-path should be enough
>>     to get the console.
> (snip)
>> Thank you for your comment.
>> Before creating this patch, I have a patch reference of you and Geert.
>> https://patchwork.kernel.org/patch/5184001/
>
> I think he want to say here is that it needs "console=" which
> is indicated by Geert on https://patchwork.kernel.org/patch/5184001/
>
>         "Note that we have to keep the "console=ttySC1" parameter in
>         chosen/bootargs, ..."

        "... else we only get console messages on tty0, and because
        this DTS is shared between legacy and multi-platform."

That was needed at the time of commit 2c32622c3f3f9c7e ("ARM:
shmobile: armadillo800eva dts: Add chosen/stdout-path").

Due to generic DT/console updates later, the "console=" parameters were
no longer needed, cfr. commit 1403e38b829acdad ("ARM: dts: armadillo800eva:
Update console parameters").

> I don't have armadillo800eva anymore, so I can't test this patch.
> But according to Phuc-san, there is not command prompt after boot
> without this patch.

I'm quite sure I do get console output on both ttyS0 and tty0 with the current
kernel (can't test right now due to board farm move/restructuring).

For a userspace prompt, I guess Phuc-san uses /dev/console as the console
device in e.g. /etc/inittab (or an equivalent)? If you want a prompt on tty0,
you better specify /dev/tty0 instead of /dev/console.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

^ permalink raw reply	[flat|nested] 16+ messages in thread
end of thread, other threads:[~2017-08-10  8:25 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-08-06 13:55 [PATCH] ARM:dts:armadillo800eva: Add console parametters Bui Duc Phuc (Fukuda)
2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
2017-08-06 13:55 ` Bui Duc Phuc (Fukuda)
2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
2017-08-06 13:55   ` Bui Duc Phuc (Fukuda)
2017-08-07  7:59   ` Simon Horman
2017-08-07  7:59     ` Simon Horman
2017-08-07  7:59     ` Simon Horman
     [not found]     ` <CAABR9nHUuSw7m6BCBxDs28YtppHxwHNQR5f06H0n8xcXKx7gCw@mail.gmail.com>
2017-08-10  8:12       ` Kuninori Morimoto
2017-08-10  8:12         ` Kuninori Morimoto
2017-08-10  8:12         ` Kuninori Morimoto
2017-08-10  8:25         ` Geert Uytterhoeven
2017-08-10  8:25           ` Geert Uytterhoeven
2017-08-10  8:25           ` Geert Uytterhoeven

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