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Groups > linux.kernel > #1501906
| From | Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller |
| Date | 2016-10-17 13:50 +0200 |
| Message-ID | <steAx-2Ua-13@gated-at.bofh.it> (permalink) |
| References | <soU7n-1nW-7@gated-at.bofh.it> <stanf-mk-1@gated-at.bofh.it> <staGB-sN-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hello,
On Monday 17 Oct 2016 10:33:58 Tomi Valkeinen wrote:
> On 17/10/16 10:12, Sekhar Nori wrote:
>> On Monday 17 October 2016 11:26 AM, Tomi Valkeinen wrote:
>>> On 15/10/16 20:42, Sekhar Nori wrote:
>>>>> diff --git a/arch/arm/boot/dts/da850.dtsi
>>>>> b/arch/arm/boot/dts/da850.dtsi
>>>>> index f79e1b9..32908ae 100644
>>>>> --- a/arch/arm/boot/dts/da850.dtsi
>>>>> +++ b/arch/arm/boot/dts/da850.dtsi
>>>>> @@ -399,6 +420,14 @@
>>>>> <&edma0 0 1>;
>>>>> dma-names = "tx", "rx";
>>>>> };
>>>>> +
>>>>> + display: display@213000 {
>>>>> + compatible = "ti,am33xx-tilcdc", "ti,da850-tilcdc";
>>>>
>>>> This should instead be:
>>>>
>>>> compatible = "ti,da850-tilcdc", "ti,am33xx-tilcdc";
>>>>
>>>> as the closest match should appear first in the list.
>>>
>>> Actually I don't think that's correct. The LCDC on da850 is not
>>> compatible with the LCDC on AM335x. I think it should be just
>>> "ti,da850-tilcdc".
>>
>> So if "ti,am33xx-tilcdc" is used, the display wont work at all? If thats
>> the case, I wonder how the patch passed testing. Bartosz?
>
> AM3 has "version 2" of LCDC, whereas DA850 is v1. They are quite
> similar, but different.
>
> The driver gets the version number from LCDC's register, and acts based
> on that, so afaik the compatible string doesn't really affect the
> functionality (as long as it matches).
>
> But even if it works with the current driver, I don't think
> "ti,am33xx-tilcdc" and "ti,da850-tilcdc" are compatible in the HW level.
If the hardware provides IP revision information, how about just "ti,lcdc" ?
--
Regards,
Laurent Pinchart
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Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Sekhar Nori <nsekhar@ti.com> - 2016-10-15 19:50 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-10-15 21:50 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Tomi Valkeinen <tomi.valkeinen@ti.com> - 2016-10-17 08:00 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Sekhar Nori <nsekhar@ti.com> - 2016-10-17 09:20 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-10-17 09:30 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Tomi Valkeinen <tomi.valkeinen@ti.com> - 2016-10-17 09:40 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Laurent Pinchart <laurent.pinchart@ideasonboard.com> - 2016-10-17 13:50 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Tomi Valkeinen <tomi.valkeinen@ti.com> - 2016-10-17 14:40 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Laurent Pinchart <laurent.pinchart@ideasonboard.com> - 2016-10-17 14:50 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-10-17 16:10 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Sekhar Nori <nsekhar@ti.com> - 2016-10-20 12:10 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Tomi Valkeinen <tomi.valkeinen@ti.com> - 2016-10-20 12:30 +0200
Re: [PATCH 2/2] ARM: dts: da850: add a node for the LCD controller Sekhar Nori <nsekhar@ti.com> - 2016-10-20 12:40 +0200
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