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

[Andreas Kemnade]

On Mon, 27 Mar 2023 21:30:19 +0200
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> 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
> 
yes, correct. probably that thing is easy enough to create an upstreamable
driver for it, as far as I understand it is just one register containing bits to enable/disable output
and one register per channel to adjust brightness.

Touchscreen is:
eKTP1059(8|B)QS

name in the vendor kernel: eKT1059

looks like I can throw away most of the old code because several things
were not invented yet like devicetree and threaded irqs and then quickly
submit the driver and get instructions which of the other drivers should
be improved instead to include support for it.

Regards,
Andreas