* [PATCH] ARM: dts: vf-colibri: define stdout-path property
@ 2015-07-03 8:06 Stefan Agner
2015-07-13 15:10 ` Shawn Guo
0 siblings, 1 reply; 4+ messages in thread
From: Stefan Agner @ 2015-07-03 8:06 UTC (permalink / raw)
To: shawn.guo, kernel
Cc: devicetree, linux-arm-kernel, linux-kernel, Stefan Agner
Define Vybrid's UART0, connected to the Colibri pinout UART_A, as
standard output.
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
index 2cbe663..cb199ae 100644
--- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
+++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
@@ -10,6 +10,7 @@
/ {
chosen {
bootargs = "console=ttyLP0,115200";
+ stdout-path = "serial0:115200n8";
};
clk16m: clk16m {
--
2.4.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] ARM: dts: vf-colibri: define stdout-path property
2015-07-03 8:06 [PATCH] ARM: dts: vf-colibri: define stdout-path property Stefan Agner
@ 2015-07-13 15:10 ` Shawn Guo
2015-07-15 14:05 ` Stefan Agner
0 siblings, 1 reply; 4+ messages in thread
From: Shawn Guo @ 2015-07-13 15:10 UTC (permalink / raw)
To: Stefan Agner
Cc: shawn.guo, kernel, devicetree, linux-arm-kernel, linux-kernel
On Fri, Jul 03, 2015 at 10:06:39AM +0200, Stefan Agner wrote:
> Define Vybrid's UART0, connected to the Colibri pinout UART_A, as
> standard output.
>
> Signed-off-by: Stefan Agner <stefan@agner.ch>
> ---
> arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> index 2cbe663..cb199ae 100644
> --- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> +++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> @@ -10,6 +10,7 @@
> / {
> chosen {
> bootargs = "console=ttyLP0,115200";
> + stdout-path = "serial0:115200n8";
With this change, can bootargs just be dropped?
Shawn
> };
>
> clk16m: clk16m {
> --
> 2.4.4
>
> --
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] ARM: dts: vf-colibri: define stdout-path property
2015-07-13 15:10 ` Shawn Guo
@ 2015-07-15 14:05 ` Stefan Agner
2015-07-17 2:55 ` Shawn Guo
0 siblings, 1 reply; 4+ messages in thread
From: Stefan Agner @ 2015-07-15 14:05 UTC (permalink / raw)
To: Shawn Guo
Cc: shawn.guo-QSEj5FYQhm4dnm+yROfE0A, kernel-bIcnvbaLZ9MEGnE8C9+IrQ,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
On 2015-07-13 17:10, Shawn Guo wrote:
> On Fri, Jul 03, 2015 at 10:06:39AM +0200, Stefan Agner wrote:
>> Define Vybrid's UART0, connected to the Colibri pinout UART_A, as
>> standard output.
>>
>> Signed-off-by: Stefan Agner <stefan-XLVq0VzYD2Y@public.gmane.org>
>> ---
>> arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
>> index 2cbe663..cb199ae 100644
>> --- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
>> +++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
>> @@ -10,6 +10,7 @@
>> / {
>> chosen {
>> bootargs = "console=ttyLP0,115200";
>> + stdout-path = "serial0:115200n8";
>
> With this change, can bootargs just be dropped?
I guess it would break a (fairly old) kernel which does not support
stdout-path yet?
However, the newer Vybrid DT's anyway do not work on old kernels due to
the interrupt hierarchy changes...
Will send a v2 without default bootargs.
--
Stefan
--
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] ARM: dts: vf-colibri: define stdout-path property
2015-07-15 14:05 ` Stefan Agner
@ 2015-07-17 2:55 ` Shawn Guo
0 siblings, 0 replies; 4+ messages in thread
From: Shawn Guo @ 2015-07-17 2:55 UTC (permalink / raw)
To: Stefan Agner
Cc: devicetree, shawn.guo, linux-arm-kernel, kernel, linux-kernel
On Wed, Jul 15, 2015 at 04:05:50PM +0200, Stefan Agner wrote:
> On 2015-07-13 17:10, Shawn Guo wrote:
> > On Fri, Jul 03, 2015 at 10:06:39AM +0200, Stefan Agner wrote:
> >> Define Vybrid's UART0, connected to the Colibri pinout UART_A, as
> >> standard output.
> >>
> >> Signed-off-by: Stefan Agner <stefan@agner.ch>
> >> ---
> >> arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 1 +
> >> 1 file changed, 1 insertion(+)
> >>
> >> diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> >> index 2cbe663..cb199ae 100644
> >> --- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> >> +++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> >> @@ -10,6 +10,7 @@
> >> / {
> >> chosen {
> >> bootargs = "console=ttyLP0,115200";
> >> + stdout-path = "serial0:115200n8";
> >
> > With this change, can bootargs just be dropped?
>
> I guess it would break a (fairly old) kernel which does not support
> stdout-path yet?
The DT ABI requires that the new kernel doesn't break anything
with old DTB, but doesn't require the compatibility between new DTB
and old kernel.
Shawn
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-07-17 2:55 UTC | newest]
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2015-07-03 8:06 [PATCH] ARM: dts: vf-colibri: define stdout-path property Stefan Agner
2015-07-13 15:10 ` Shawn Guo
2015-07-15 14:05 ` Stefan Agner
2015-07-17 2:55 ` Shawn Guo
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