[v2,1/2] dt-bindings: arm: hisilicon: add bindings for hi3798cv200 SoC and Poplar board

Message ID 1487752716-14824-2-git-send-email-xuejiancheng@hisilicon.com
State New
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  • [v2,1/2] dt-bindings: arm: hisilicon: add bindings for hi3798cv200 SoC and Poplar board
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Commit Message

Jiancheng Xue Feb. 22, 2017, 8:38 a.m.
Add bindings for HiSilicon hi3798cv200 SoC and Poplar Board.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>

---
 Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt | 4 ++++
 1 file changed, 4 insertions(+)

-- 
1.9.1

Comments

Peter Griffin Feb. 25, 2017, 10:21 a.m. | #1
On Wed, 22 Feb 2017, Jiancheng Xue wrote:

> Add bindings for HiSilicon hi3798cv200 SoC and Poplar Board.

> 

> Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>


Acked-by: Peter Griffin <peter.griffin@linaro.org>


> ---

>  Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt | 4 ++++

>  1 file changed, 4 insertions(+)

> 

> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

> index f1c1e21..1fd3dd7 100644

> --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

> +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

> @@ -4,6 +4,10 @@ Hi3660 SoC

>  Required root node properties:

>  	- compatible = "hisilicon,hi3660";

>  

> +Hi3798cv200 Poplar Board

> +Required root node properties:

> +	- compatible = "hisilicon,hi3798cv200-poplar", "hisilicon,hi3798cv200";

> +

>  Hi4511 Board

>  Required root node properties:

>  	- compatible = "hisilicon,hi3620-hi4511";
Alex Elder Feb. 27, 2017, 2:48 a.m. | #2
On 02/26/2017 07:24 PM, Jiancheng Xue wrote:
> Hi Andreas,

> 

> On 2017/2/26 9:32, Andreas Färber wrote:

>> Am 22.02.2017 um 09:38 schrieb Jiancheng Xue:

>>> Add bindings for HiSilicon hi3798cv200 SoC and Poplar Board.

>>>

>>> Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>

>>> ---

>>>  Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt | 4 ++++

>>>  1 file changed, 4 insertions(+)

>>>

>>> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

>>> index f1c1e21..1fd3dd7 100644

>>> --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

>>> +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

>>> @@ -4,6 +4,10 @@ Hi3660 SoC

>>>  Required root node properties:

>>>  	- compatible = "hisilicon,hi3660";

>>>  

>>> +Hi3798cv200 Poplar Board

>>> +Required root node properties:

>>> +	- compatible = "hisilicon,hi3798cv200-poplar", "hisilicon,hi3798cv200";

>>

>> Please remember to CC previous reviewers.

>>

> Sorry for that.

> 

>> This still looks wrong: Why is this not "hisilicon,poplar" if you choose

>> against "tocoding,poplar"? 

> 

> I didn't think it was very important thing whether the compatbile string contained

> a preceding SoC name or not. I just referred to the hikey board and some other

> HiSilicon boards. I wanted to keep using the same rule with them.


The way Jiancheng defined this was consistent with the pattern
used for all other definitions of platforms found in this
documentation file.  Why make this one different?

>> Is there a second Poplar board with a different SoC? 

> 

> I can't tell about this now.


There is not.  But there could be.  In any case, I do accept
your point that there's no need to encode the SoC identity
in the board compatible string.  But I don't think doing so
causes harm.

>> Even then it would be redundant with the second

>> compatible string.


I presume you're not arguing that the second compatible
string should be eliminated; it seems your concern is only
about including the SoC in the board's compatible string.
Is that right?

> The second compatilbe string can be removed here. Thanks.


I don't think it should be.

My position, for what it's worth, is that if a change is
made to the compatible strings, it should be:

  compatible = "hisilicon,poplar", "hisilicon,hi3798cv200";

But I don't think it's necessary to make that change.  Tocoding
has no other DT presence in the kernel right now; it seems fine
to tag the board with "hisilicon".

					-Alex

> 

> Regards,

> Jiancheng

> 

>> Regards,

>> Andreas

>>

>>> +

>>>  Hi4511 Board

>>>  Required root node properties:

>>>  	- compatible = "hisilicon,hi3620-hi4511";

>>

>
Rob Herring Feb. 27, 2017, 10:35 p.m. | #3
On Wed, Feb 22, 2017 at 04:38:35PM +0800, Jiancheng Xue wrote:
> Add bindings for HiSilicon hi3798cv200 SoC and Poplar Board.

> 

> Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>

> ---

>  Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt | 4 ++++

>  1 file changed, 4 insertions(+)


Acked-by: Rob Herring <robh@kernel.org>
Peter Griffin Feb. 28, 2017, 11:42 a.m. | #4
Hi Andreas,

On Mon, 27 Feb 2017, Andreas Färber wrote:

> Hi,

> 

> Am 27.02.2017 um 03:48 schrieb Alex Elder:

> > On 02/26/2017 07:24 PM, Jiancheng Xue wrote:

> >> On 2017/2/26 9:32, Andreas Färber wrote:

> >>> Am 22.02.2017 um 09:38 schrieb Jiancheng Xue:

> >>>> Add bindings for HiSilicon hi3798cv200 SoC and Poplar Board.

> >>>>

> >>>> Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>

> >>>> ---

> >>>>  Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt | 4 ++++

> >>>>  1 file changed, 4 insertions(+)

> >>>>

> >>>> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

> >>>> index f1c1e21..1fd3dd7 100644

> >>>> --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

> >>>> +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

> >>>> @@ -4,6 +4,10 @@ Hi3660 SoC

> >>>>  Required root node properties:

> >>>>  	- compatible = "hisilicon,hi3660";

> >>>>  

> >>>> +Hi3798cv200 Poplar Board

> >>>> +Required root node properties:

> >>>> +	- compatible = "hisilicon,hi3798cv200-poplar", "hisilicon,hi3798cv200";

> >>>

> >>> Please remember to CC previous reviewers.

> >>>

> >> Sorry for that.

> >>

> >>> This still looks wrong: Why is this not "hisilicon,poplar" if you choose

> >>> against "tocoding,poplar"? 

> >>

> >> I didn't think it was very important thing whether the compatbile string contained

> >> a preceding SoC name or not. I just referred to the hikey board and some other

> >> HiSilicon boards. I wanted to keep using the same rule with them.

> > 

> > The way Jiancheng defined this was consistent with the pattern

> > used for all other definitions of platforms found in this

> > documentation file.  Why make this one different?

> 

> I am not familiar with other HiSilicon DTs but rather with several other

> vendors' DTs. This seems inconsistent with the rest. The only other one

> with SoC names in the board compatible I know of is i.MX6, where there's

> variations between single, dual and quad versions.


I've not checked all the subarchs, but STMicroelectronics chipsets I've been
involved with upstreaming also use <soc>-<board> compatible strings.

For STi b2120 board it could actually have STiH410 or STiH407 SoC. But
others like stih418-b2199 and stih410-b2260 only have one SoC. Also stm32
arch does the same thing.

Just having a quick look around arch/arm64/ as above examples were arch/arm/
and I see quite a few other examples as well e.g.

compatible = "mediatek,mt6755-evb", "mediatek,mt6755";
compatible = "mediatek,mt8173-evb", "mediatek,mt8173";
compatible = "fsl,ls1043a-qds", "fsl,ls1043a";
compatible = "samsung,exynos7-espresso", "samsung,exynos7";
compatible = "zte,zx296718-evb", "zte,zx296718";
compatible = "lge,lg1313-ref", "lge,lg1313";
compatible = "rockchip,rk3368-evb-act8846", "rockchip,rk3368";

Some subarchs have a mix within them, which maybe due to the SoC also
being part of the board name on some reference boards. But both ways seem to be
used in the kernel. So IMHO it would be better to see consistency in
arch/arm64/hisilicon* even though there is not consistency across all of
arch/arm64/* and arch/arm/*.

regards,

Peter.

Patch

diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
index f1c1e21..1fd3dd7 100644
--- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
+++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
@@ -4,6 +4,10 @@  Hi3660 SoC
 Required root node properties:
 	- compatible = "hisilicon,hi3660";
 
+Hi3798cv200 Poplar Board
+Required root node properties:
+	- compatible = "hisilicon,hi3798cv200-poplar", "hisilicon,hi3798cv200";
+
 Hi4511 Board
 Required root node properties:
 	- compatible = "hisilicon,hi3620-hi4511";