diff mbox

[v3,4/4] DTS: Pandora: fix panel compatibility string

Message ID b6001c7b7fb98e7a3ad4c712084fea9dae9e6b27.1511884135.git.hns@goldelico.com (mailing list archive)
State New, archived
Headers show

Commit Message

H. Nikolaus Schaller Nov. 28, 2017, 3:48 p.m. UTC
We can remove the unnecessary "omapdss," prefix because
the omapdrm driver takes care of it when matching with
the driver table.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/arm/boot/dts/omap3-pandora-common.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Tony Lindgren Nov. 28, 2017, 4:04 p.m. UTC | #1
* H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
> We can remove the unnecessary "omapdss," prefix because
> the omapdrm driver takes care of it when matching with
> the driver table.

So is this needed as a fix or is this another clean-up?

So is this is really needed as a fix?

If this is just clean-up, again, please resend once the driver
changes have cleared.

Regards,

Tony

> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> ---
>  arch/arm/boot/dts/omap3-pandora-common.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi b/arch/arm/boot/dts/omap3-pandora-common.dtsi
> index 53e007abdc71..64d967ec8c58 100644
> --- a/arch/arm/boot/dts/omap3-pandora-common.dtsi
> +++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi
> @@ -626,7 +626,7 @@
>  
>  	lcd: lcd@1 {
>  		reg = <1>;	/* CS1 */
> -		compatible =	"omapdss,tpo,td043mtea1";
> +		compatible =	"tpo,td043mtea1";
>  		spi-max-frequency = <100000>;
>  		spi-cpol;
>  		spi-cpha;
> -- 
> 2.12.2
>
H. Nikolaus Schaller Nov. 28, 2017, 4:14 p.m. UTC | #2
Hi Tony,

> Am 28.11.2017 um 17:04 schrieb Tony Lindgren <tony@atomide.com>:
> 
> * H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
>> We can remove the unnecessary "omapdss," prefix because
>> the omapdrm driver takes care of it when matching with
>> the driver table.
> 
> So is this needed as a fix or is this another clean-up?
> 
> So is this is really needed as a fix?

Hm. How do you differentiate between "fix" and "cleanup"?
Maybe it is more a wording than a content issue...

For me it is a "fix" because it is semantically wrong to have
a prefix where it is not needed. And "fixing" it changes the
compiler output by 8 bytes.

"Cleanup" would be for me removing whitespace or empty lines
or typos in comments.

> 
> If this is just clean-up, again, please resend once the driver
> changes have cleared.

There is no change to the pandora driver involved here. The Pandora
panel driver is already correct. Just the DTS has some redundant
content which should be removed.

So there is no dependency for this patch.

BR,
Nikolaus

> 
> Regards,
> 
> Tony
> 
>> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
>> ---
>> arch/arm/boot/dts/omap3-pandora-common.dtsi | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi b/arch/arm/boot/dts/omap3-pandora-common.dtsi
>> index 53e007abdc71..64d967ec8c58 100644
>> --- a/arch/arm/boot/dts/omap3-pandora-common.dtsi
>> +++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi
>> @@ -626,7 +626,7 @@
>> 
>> 	lcd: lcd@1 {
>> 		reg = <1>;	/* CS1 */
>> -		compatible =	"omapdss,tpo,td043mtea1";
>> +		compatible =	"tpo,td043mtea1";
>> 		spi-max-frequency = <100000>;
>> 		spi-cpol;
>> 		spi-cpha;
>> -- 
>> 2.12.2
>>
Tony Lindgren Nov. 28, 2017, 4:18 p.m. UTC | #3
* H. Nikolaus Schaller <hns@goldelico.com> [171128 16:17]:
> Hi Tony,
> 
> > Am 28.11.2017 um 17:04 schrieb Tony Lindgren <tony@atomide.com>:
> > 
> > * H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
> >> We can remove the unnecessary "omapdss," prefix because
> >> the omapdrm driver takes care of it when matching with
> >> the driver table.
> > 
> > So is this needed as a fix or is this another clean-up?
> > 
> > So is this is really needed as a fix?
> 
> Hm. How do you differentiate between "fix" and "cleanup"?
> Maybe it is more a wording than a content issue...
> 
> For me it is a "fix" because it is semantically wrong to have
> a prefix where it is not needed. And "fixing" it changes the
> compiler output by 8 bytes.

How about let's call it a "typo fix" then? :)

> "Cleanup" would be for me removing whitespace or empty lines
> or typos in comments.
>
> > If this is just clean-up, again, please resend once the driver
> > changes have cleared.
> 
> There is no change to the pandora driver involved here. The Pandora
> panel driver is already correct. Just the DTS has some redundant
> content which should be removed.
> 
> So there is no dependency for this patch.

OK please resend separately after the driver changes have merged
then.

Regards,

Tony
H. Nikolaus Schaller Nov. 28, 2017, 6:32 p.m. UTC | #4
Hi,

> Am 28.11.2017 um 17:18 schrieb Tony Lindgren <tony@atomide.com>:
> 
> * H. Nikolaus Schaller <hns@goldelico.com> [171128 16:17]:
>> Hi Tony,
>> 
>>> Am 28.11.2017 um 17:04 schrieb Tony Lindgren <tony@atomide.com>:
>>> 
>>> * H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
>>>> We can remove the unnecessary "omapdss," prefix because
>>>> the omapdrm driver takes care of it when matching with
>>>> the driver table.
>>> 
>>> So is this needed as a fix or is this another clean-up?
>>> 
>>> So is this is really needed as a fix?
>> 
>> Hm. How do you differentiate between "fix" and "cleanup"?
>> Maybe it is more a wording than a content issue...
>> 
>> For me it is a "fix" because it is semantically wrong to have
>> a prefix where it is not needed. And "fixing" it changes the
>> compiler output by 8 bytes.
> 
> How about let's call it a "typo fix" then? :)

Well, it is not really a typo.

> 
>> "Cleanup" would be for me removing whitespace or empty lines
>> or typos in comments.
>> 
>>> If this is just clean-up, again, please resend once the driver
>>> changes have cleared.
>> 
>> There is no change to the pandora driver involved here. The Pandora
>> panel driver is already correct. Just the DTS has some redundant
>> content which should be removed.
>> 
>> So there is no dependency for this patch.
> 
> OK please resend separately after the driver changes have merged
> then.

The Pandora driver does not need an update. Only the DTS.
So there is noting to merge or wait for.

Maybe the confusion comes that in both cases (GTA04 and OpenPandora)
there are changes to DTS.

But different ones.

GTA04: change vendor prefix to make it consistent
Pandora: remove redundant (unnecessary and potentially wrong) omapdss, prefix

In addition we have to modify the GTA04 panel to handle the correct
vendor prefix. The Pandora panel already uses the right one.

Anyways, I think it is now Tomi to decide about the panel driver
(vendor prefix) patch 1/4 and 2/4 first. Then we can sort out
the DTS changes (3/4 and 4/4).

BR and thanks,
Nikolaus
Tony Lindgren Nov. 30, 2017, 3:24 p.m. UTC | #5
* H. Nikolaus Schaller <hns@goldelico.com> [171128 18:35]:
> Hi,
> 
> > Am 28.11.2017 um 17:18 schrieb Tony Lindgren <tony@atomide.com>:
> > 
> > * H. Nikolaus Schaller <hns@goldelico.com> [171128 16:17]:
> >> Hi Tony,
> >> 
> >>> Am 28.11.2017 um 17:04 schrieb Tony Lindgren <tony@atomide.com>:
> >>> 
> >>> * H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
> >>>> We can remove the unnecessary "omapdss," prefix because
> >>>> the omapdrm driver takes care of it when matching with
> >>>> the driver table.
> >>> 
> >>> So is this needed as a fix or is this another clean-up?
> >>> 
> >>> So is this is really needed as a fix?
> >> 
> >> Hm. How do you differentiate between "fix" and "cleanup"?
> >> Maybe it is more a wording than a content issue...
> >> 
> >> For me it is a "fix" because it is semantically wrong to have
> >> a prefix where it is not needed. And "fixing" it changes the
> >> compiler output by 8 bytes.
> > 
> > How about let's call it a "typo fix" then? :)
> 
> Well, it is not really a typo.

Well what if the stable people pick it into earlier stable series
based on the word fix in the subject? That has happened before.

I suggest you update the dts patches to use wording like
"update compatible to use new naming" or something similar.

Regards,

Tony
Sebastian Reichel Nov. 30, 2017, 10:06 p.m. UTC | #6
Hi,

On Thu, Nov 30, 2017 at 07:24:30AM -0800, Tony Lindgren wrote:
> * H. Nikolaus Schaller <hns@goldelico.com> [171128 18:35]:
> > Hi,
> > 
> > > Am 28.11.2017 um 17:18 schrieb Tony Lindgren <tony@atomide.com>:
> > > 
> > > * H. Nikolaus Schaller <hns@goldelico.com> [171128 16:17]:
> > >> Hi Tony,
> > >> 
> > >>> Am 28.11.2017 um 17:04 schrieb Tony Lindgren <tony@atomide.com>:
> > >>> 
> > >>> * H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
> > >>>> We can remove the unnecessary "omapdss," prefix because
> > >>>> the omapdrm driver takes care of it when matching with
> > >>>> the driver table.
> > >>> 
> > >>> So is this needed as a fix or is this another clean-up?
> > >>> 
> > >>> So is this is really needed as a fix?
> > >> 
> > >> Hm. How do you differentiate between "fix" and "cleanup"?
> > >> Maybe it is more a wording than a content issue...
> > >> 
> > >> For me it is a "fix" because it is semantically wrong to have
> > >> a prefix where it is not needed. And "fixing" it changes the
> > >> compiler output by 8 bytes.
> > > 
> > > How about let's call it a "typo fix" then? :)
> > 
> > Well, it is not really a typo.
> 
> Well what if the stable people pick it into earlier stable series
> based on the word fix in the subject? That has happened before.
> 
> I suggest you update the dts patches to use wording like
> "update compatible to use new naming" or something similar.

Patch 4/4 is a Fix and should be applied to stable trees. "omapdss,"
prefix was never supposed to be in the DTS files, is not supposed to
be in there now and will break some time in the future.

Explanation: The early init of omapdss adds the prefix at runtime,
so that the binding can use generic properties and the kernel can
use omapdss specific drivers until the generic ones can be used.

-- Sebastian
H. Nikolaus Schaller Dec. 1, 2017, 7:41 a.m. UTC | #7
> Am 30.11.2017 um 16:24 schrieb Tony Lindgren <tony@atomide.com>:
> 
> * H. Nikolaus Schaller <hns@goldelico.com> [171128 18:35]:
>> Hi,
>> 
>>> Am 28.11.2017 um 17:18 schrieb Tony Lindgren <tony@atomide.com>:
>>> 
>>> * H. Nikolaus Schaller <hns@goldelico.com> [171128 16:17]:
>>>> Hi Tony,
>>>> 
>>>>> Am 28.11.2017 um 17:04 schrieb Tony Lindgren <tony@atomide.com>:
>>>>> 
>>>>> * H. Nikolaus Schaller <hns@goldelico.com> [171128 15:52]:
>>>>>> We can remove the unnecessary "omapdss," prefix because
>>>>>> the omapdrm driver takes care of it when matching with
>>>>>> the driver table.
>>>>> 
>>>>> So is this needed as a fix or is this another clean-up?
>>>>> 
>>>>> So is this is really needed as a fix?
>>>> 
>>>> Hm. How do you differentiate between "fix" and "cleanup"?
>>>> Maybe it is more a wording than a content issue...
>>>> 
>>>> For me it is a "fix" because it is semantically wrong to have
>>>> a prefix where it is not needed. And "fixing" it changes the
>>>> compiler output by 8 bytes.
>>> 
>>> How about let's call it a "typo fix" then? :)
>> 
>> Well, it is not really a typo.
> 
> Well what if the stable people pick it into earlier stable series
> based on the word fix in the subject? That has happened before.

Well, that may happen but IMHO *every* such backport must be checked
for reasonability and compatibility and sometimes even modified to apply.

And I think the author of the original patch receives a notification
from the stable maintainers and can then veto.

For Example I received "[PATCH 4.7 118/186] w1:omap_hdq: fix regression"
"4.7-stable review patch.  If anyone has any objections, please let me know."

If that process still fails, we simply have to revert it... Has also
happened before. So it will not be end of mankind :)

> 
> I suggest you update the dts patches to use wording like
> "update compatible to use new naming" or something similar.

I have applied s/fix/improve/ for patch 3/4 and left 4/4 as
suggested by Sebastian since it is really a strongly suggested
correction.

Since Tomi has already accepted the underlaying driver patch,
[PATCH v4] will only have the remaining DTS patches.

BR and thanks,
Nikolaus
Tomi Valkeinen Dec. 1, 2017, 8:13 a.m. UTC | #8
On 01/12/17 00:06, Sebastian Reichel wrote:

>>>> How about let's call it a "typo fix" then? :)
>>>
>>> Well, it is not really a typo.
>>
>> Well what if the stable people pick it into earlier stable series
>> based on the word fix in the subject? That has happened before.
>>
>> I suggest you update the dts patches to use wording like
>> "update compatible to use new naming" or something similar.
> 
> Patch 4/4 is a Fix and should be applied to stable trees. "omapdss,"
> prefix was never supposed to be in the DTS files, is not supposed to
> be in there now and will break some time in the future.
> 
> Explanation: The early init of omapdss adds the prefix at runtime,
> so that the binding can use generic properties and the kernel can
> use omapdss specific drivers until the generic ones can be used

This is true, but the extra "omapdss" does not cause any issues at the
moment, and the time when it causes issues is still many kernel versions
in the future.

But, yes, thinking about this, I agree, it's better to pick this one
separately as a fix (after rebasing it on top of current maineline so
that it doesn't depend on the toppoly name change), and leaving the
toppoly->tpo change as a cleanup.
H. Nikolaus Schaller Dec. 1, 2017, 9:48 a.m. UTC | #9
Hi Tomi,

> Am 01.12.2017 um 09:13 schrieb Tomi Valkeinen <tomi.valkeinen@ti.com>:
> 
> On 01/12/17 00:06, Sebastian Reichel wrote:
> 
>>>>> How about let's call it a "typo fix" then? :)
>>>> 
>>>> Well, it is not really a typo.
>>> 
>>> Well what if the stable people pick it into earlier stable series
>>> based on the word fix in the subject? That has happened before.
>>> 
>>> I suggest you update the dts patches to use wording like
>>> "update compatible to use new naming" or something similar.
>> 
>> Patch 4/4 is a Fix and should be applied to stable trees. "omapdss,"
>> prefix was never supposed to be in the DTS files, is not supposed to
>> be in there now and will break some time in the future.
>> 
>> Explanation: The early init of omapdss adds the prefix at runtime,
>> so that the binding can use generic properties and the kernel can
>> use omapdss specific drivers until the generic ones can be used
> 
> This is true, but the extra "omapdss" does not cause any issues at the
> moment, and the time when it causes issues is still many kernel versions
> in the future.
> 
> But, yes, thinking about this, I agree, it's better to pick this one
> separately as a fix (after rebasing it on top of current maineline so
> that it doesn't depend on the toppoly name change), and leaving the
> toppoly->tpo change as a cleanup.

Just a note: there is no toppoly->tpo change for *this* panel and
Pandora board. Just omapdss removal.

The GTA04 needs a toppoly->tpo change but no omapdss, removal.

So they solve different problems and are independent of each other.

GTA04: change vendor string
Pandora: remove omapdss, prefix

BR and thanks,
Nikolaus
Tomi Valkeinen Dec. 1, 2017, 10:01 a.m. UTC | #10
On 01/12/17 11:48, H. Nikolaus Schaller wrote:

> Just a note: there is no toppoly->tpo change for *this* panel and
> Pandora board. Just omapdss removal.
> 
> The GTA04 needs a toppoly->tpo change but no omapdss, removal.
> 
> So they solve different problems and are independent of each other.
> 
> GTA04: change vendor string
> Pandora: remove omapdss, prefix

Oh, right, I totally missed that. I thought they were changes to the
same file...

In that case, Tony, can you pick this one as a fix? I'll pick the
toppoly->tpo patch and merge via drm tree, if you give the ack.

For this:

Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

 Tomi
Tony Lindgren Dec. 11, 2017, 3:16 p.m. UTC | #11
* Tomi Valkeinen <tomi.valkeinen@ti.com> [171201 02:03]:
> On 01/12/17 11:48, H. Nikolaus Schaller wrote:
> 
> > Just a note: there is no toppoly->tpo change for *this* panel and
> > Pandora board. Just omapdss removal.
> > 
> > The GTA04 needs a toppoly->tpo change but no omapdss, removal.
> > 
> > So they solve different problems and are independent of each other.
> > 
> > GTA04: change vendor string
> > Pandora: remove omapdss, prefix
> 
> Oh, right, I totally missed that. I thought they were changes to the
> same file...
> 
> In that case, Tony, can you pick this one as a fix? I'll pick the
> toppoly->tpo patch and merge via drm tree, if you give the ack.
> 
> For this:
> 
> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

Sorry I've lost track of this thread and what if anything is really
needed as a fix for v4.16. And now there's newer version of the two
dts patches in thread "[PATCH v4 0/2] Fixes for omapdrm on
OpenPandora and GTA04" so let's move the discussion there.

Regards,

Tony
diff mbox

Patch

diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi b/arch/arm/boot/dts/omap3-pandora-common.dtsi
index 53e007abdc71..64d967ec8c58 100644
--- a/arch/arm/boot/dts/omap3-pandora-common.dtsi
+++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi
@@ -626,7 +626,7 @@ 
 
 	lcd: lcd@1 {
 		reg = <1>;	/* CS1 */
-		compatible =	"omapdss,tpo,td043mtea1";
+		compatible =	"tpo,td043mtea1";
 		spi-max-frequency = <100000>;
 		spi-cpol;
 		spi-cpha;