Re: [PATCH 1/7] MIPS: dts: Add aliases node for lantiq danube serial
On 6/18/2018 6:59 PM, Arnd Bergmann wrote:
On Mon, Jun 18, 2018 at 11:42 AM, Wu, Songjun
wrote:
On 6/14/2018 6:03 PM, Arnd Bergmann wrote:
On Tue, Jun 12, 2018 at 7:40 AM, Songjun Wu
wrote:
Previous implementation uses a hard-coded register value to check if
the current serial entity is the console entity.
Now the lantiq serial driver uses the aliases for the index of the
serial port.
The lantiq danube serial dts are updated with aliases to support this.
Signed-off-by: Songjun Wu
---
arch/mips/boot/dts/lantiq/danube.dtsi | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi
b/arch/mips/boot/dts/lantiq/danube.dtsi
index 2dd950181f8a..7a9e15da6bd0 100644
--- a/arch/mips/boot/dts/lantiq/danube.dtsi
+++ b/arch/mips/boot/dts/lantiq/danube.dtsi
@@ -4,6 +4,10 @@
#size-cells = <1>;
compatible = "lantiq,xway", "lantiq,danube";
+ aliases {
+ serial0 = &asc1;
+ };
+
You generally want the aliases to be part of the board specific file,
not every board numbers their serial ports in the same way.
In this chip only asc1 can be used as console, so serial0 is defined in
chip specific file.
This was a more general comment about 'aliases' being board specific
in principle (though we've had exceptions in the past). Even if there
is only one uart on the chip, I'd recommend following the same
conventions as the other chips that have more than one uart.
Arnd
Accept, 'aliases' will be move to the board specific file.
Re: [PATCH 1/7] MIPS: dts: Add aliases node for lantiq danube serial
On Mon, Jun 18, 2018 at 11:42 AM, Wu, Songjun
wrote:
> On 6/14/2018 6:03 PM, Arnd Bergmann wrote:
>>
>> On Tue, Jun 12, 2018 at 7:40 AM, Songjun Wu
>> wrote:
>>>
>>> Previous implementation uses a hard-coded register value to check if
>>> the current serial entity is the console entity.
>>> Now the lantiq serial driver uses the aliases for the index of the
>>> serial port.
>>> The lantiq danube serial dts are updated with aliases to support this.
>>>
>>> Signed-off-by: Songjun Wu
>>> ---
>>>
>>> arch/mips/boot/dts/lantiq/danube.dtsi | 6 +-
>>> 1 file changed, 5 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi
>>> b/arch/mips/boot/dts/lantiq/danube.dtsi
>>> index 2dd950181f8a..7a9e15da6bd0 100644
>>> --- a/arch/mips/boot/dts/lantiq/danube.dtsi
>>> +++ b/arch/mips/boot/dts/lantiq/danube.dtsi
>>> @@ -4,6 +4,10 @@
>>> #size-cells = <1>;
>>> compatible = "lantiq,xway", "lantiq,danube";
>>>
>>> + aliases {
>>> + serial0 = &asc1;
>>> + };
>>> +
>>
>> You generally want the aliases to be part of the board specific file,
>> not every board numbers their serial ports in the same way.
>>
>
> In this chip only asc1 can be used as console, so serial0 is defined in
> chip specific file.
This was a more general comment about 'aliases' being board specific
in principle (though we've had exceptions in the past). Even if there
is only one uart on the chip, I'd recommend following the same
conventions as the other chips that have more than one uart.
Arnd
Re: [PATCH 1/7] MIPS: dts: Add aliases node for lantiq danube serial
On 6/14/2018 6:03 PM, Arnd Bergmann wrote:
On Tue, Jun 12, 2018 at 7:40 AM, Songjun Wu wrote:
Previous implementation uses a hard-coded register value to check if
the current serial entity is the console entity.
Now the lantiq serial driver uses the aliases for the index of the
serial port.
The lantiq danube serial dts are updated with aliases to support this.
Signed-off-by: Songjun Wu
---
arch/mips/boot/dts/lantiq/danube.dtsi | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi
b/arch/mips/boot/dts/lantiq/danube.dtsi
index 2dd950181f8a..7a9e15da6bd0 100644
--- a/arch/mips/boot/dts/lantiq/danube.dtsi
+++ b/arch/mips/boot/dts/lantiq/danube.dtsi
@@ -4,6 +4,10 @@
#size-cells = <1>;
compatible = "lantiq,xway", "lantiq,danube";
+ aliases {
+ serial0 = &asc1;
+ };
+
You generally want the aliases to be part of the board specific file,
not every board numbers their serial ports in the same way.
Arnd
In this chip only asc1 can be used as console, so serial0 is defined in
chip specific file.
Re: [PATCH 1/7] MIPS: dts: Add aliases node for lantiq danube serial
On Tue, Jun 12, 2018 at 7:40 AM, Songjun Wu wrote:
> Previous implementation uses a hard-coded register value to check if
> the current serial entity is the console entity.
> Now the lantiq serial driver uses the aliases for the index of the
> serial port.
> The lantiq danube serial dts are updated with aliases to support this.
>
> Signed-off-by: Songjun Wu
> ---
>
> arch/mips/boot/dts/lantiq/danube.dtsi | 6 +-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi
> b/arch/mips/boot/dts/lantiq/danube.dtsi
> index 2dd950181f8a..7a9e15da6bd0 100644
> --- a/arch/mips/boot/dts/lantiq/danube.dtsi
> +++ b/arch/mips/boot/dts/lantiq/danube.dtsi
> @@ -4,6 +4,10 @@
> #size-cells = <1>;
> compatible = "lantiq,xway", "lantiq,danube";
>
> + aliases {
> + serial0 = &asc1;
> + };
> +
You generally want the aliases to be part of the board specific file,
not every board numbers their serial ports in the same way.
Arnd
Re: [PATCH 1/7] MIPS: dts: Add aliases node for lantiq danube serial
On Tue, Jun 12, 2018 at 01:40:28PM +0800, Songjun Wu wrote:
> Previous implementation uses a hard-coded register value to check if
> the current serial entity is the console entity.
> Now the lantiq serial driver uses the aliases for the index of the
> serial port.
> The lantiq danube serial dts are updated with aliases to support this.
>
> Signed-off-by: Songjun Wu
> ---
>
> arch/mips/boot/dts/lantiq/danube.dtsi | 6 +-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi
> b/arch/mips/boot/dts/lantiq/danube.dtsi
> index 2dd950181f8a..7a9e15da6bd0 100644
> --- a/arch/mips/boot/dts/lantiq/danube.dtsi
> +++ b/arch/mips/boot/dts/lantiq/danube.dtsi
> @@ -4,6 +4,10 @@
> #size-cells = <1>;
> compatible = "lantiq,xway", "lantiq,danube";
>
> + aliases {
> + serial0 = &asc1;
> + };
> +
> cpus {
> cpu@0 {
> compatible = "mips,mips24Kc";
> @@ -74,7 +78,7 @@
> reg = <0xE100A00 0x100>;
> };
>
> - serial@E100C00 {
> + asc1: serial@E100C00 {
Fix this to be lower case hex while you are at it.
> compatible = "lantiq,asc";
> reg = <0xE100C00 0x400>;
> interrupt-parent = <&icu0>;
> --
> 2.11.0
>
[PATCH 1/7] MIPS: dts: Add aliases node for lantiq danube serial
Previous implementation uses a hard-coded register value to check if
the current serial entity is the console entity.
Now the lantiq serial driver uses the aliases for the index of the
serial port.
The lantiq danube serial dts are updated with aliases to support this.
Signed-off-by: Songjun Wu
---
arch/mips/boot/dts/lantiq/danube.dtsi | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi
b/arch/mips/boot/dts/lantiq/danube.dtsi
index 2dd950181f8a..7a9e15da6bd0 100644
--- a/arch/mips/boot/dts/lantiq/danube.dtsi
+++ b/arch/mips/boot/dts/lantiq/danube.dtsi
@@ -4,6 +4,10 @@
#size-cells = <1>;
compatible = "lantiq,xway", "lantiq,danube";
+ aliases {
+ serial0 = &asc1;
+ };
+
cpus {
cpu@0 {
compatible = "mips,mips24Kc";
@@ -74,7 +78,7 @@
reg = <0xE100A00 0x100>;
};
- serial@E100C00 {
+ asc1: serial@E100C00 {
compatible = "lantiq,asc";
reg = <0xE100C00 0x400>;
interrupt-parent = <&icu0>;
--
2.11.0
