[Letux-kernel] [PATCH] ARM: dts: omap4: add initial support for Epson Moverio BT-200

[H. Nikolaus Schaller]

Hi,

> Am 27.03.2023 um 20:58 schrieb Andreas Kemnade <andreas at kemnade.info>:
> 
> Hi,
> 
> so what works:
> - buttons
> - wifi
> - usb gadget (host not tried)
> - some sensors
> - eMMC
> - uSD
> - display backlight
> - measuring various voltage

That is already a lot!

> 
> what works not: 
> - display: missing panel driver
> - audio (headset jack): regressions during ti-sysv refactoring, mcbsp master
>  clock
> - bluetooth:
>   - missing clk driver for twl6030 clk32kaudio (without it, cts is not
>     asserted), dirty hack is available
>   - timeouts after quite some fw uploading for unknown reason
> - led (not simple gpio, some i2c chip: BD2606MVV)

this one? https://fscdn.rohm.com/en/products/databook/datasheet/ic/power/led_driver/bd2606mvv_1-e.pdf

Regarding drivers there is a Samsung BD2802 driver but if doesn't look to be very compatible.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/leds/leds-bd2802.c?h=v6.3-rc4

From functional comparison the driver has some similarities to this driver

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/leds/leds-is31fl319x.c?h=v6.3-rc4

Well, needs quite some tweaking.

Hope this helps a little...

BR,
Nikolaus

> - touchpad (some elan chip via spi)
> 
> Regards,
> Andreas
> 
> On Mon, 27 Mar 2023 19:09:11 +0200
> "H. Nikolaus Schaller" <hns at goldelico.com> wrote:
> 
>> Hi Andreas,
>> that looks good!
>> 
>> So it is not too far (v6.4?) that this device has initial upstream support.
>> 
>> So what is already working or not working?
>> 
>> BR,
>> Nikolaus
>> 
>> 
>>> Am 27.03.2023 um 12:57 schrieb Andreas Kemnade <andreas at kemnade.info>:
>>> 
>>> On Mon, 27 Mar 2023 11:21:37 +0300
>>> Tony Lindgren <tony at atomide.com> wrote:
>>> 
>>>> * Andreas Kemnade <andreas at kemnade.info> [230313 13:04]:  
>>>>> yes, epson,embt2ws is unknown, is the txt->yaml conversion around the
>>>>> corner? I would then resubmit it includding an addition
>>>>> to that yaml. If not probably I resubmit the conversion patch with
>>>>> the compatible added. But that should not stop the rest of this patch from
>>>>> being reviewed.    
>>>> 
>>>> Yeah let's do the yaml conversion first as otherwise we'll be adding some
>>>> extra warnings for the dt folks.
>>>> 
>>>> Your patch looks otherwise OK to me.
>>>> 
>>> So I will try to incooperate the feedback into the last version
>>> of the conversion patch and include epson,embt2ws.
>>> 
>>> Regards,
>>> Andreas  
>> 
>> 
>