[Letux-kernel] [OpenOCD-devel] [PATCH]: d86217d board: add Skytone Alpha 400

[H. Nikolaus Schaller]

Hi Paul,

> Am 16.11.2020 um 01:01 schrieb Paul Boddie <paul at boddie.org.uk>:
> 
> On Tuesday, 3 November 2020 20:52:07 CET Riccardo Mottola wrote:
>> 
>> Paul Boddie wrote:
>>> 
>>> Let's not forget the documentation area, too:
>>> 
>>> https://projects.goldelico.com/p/letux400/doc/
>>> 
>>> I could probably add more details to that, given that there has been some
>>> effort to formulate how the hardware works in connection with modernising
>>> those patches.
>> 
>> Please do!
> 
> I've started adding some notes to those pages, and I've made some new pages:
> 
> https://projects.goldelico.com/p/letux400/page/I2C/
> https://projects.goldelico.com/p/letux400/page/Power/
> https://projects.goldelico.com/p/letux400/page/PWM/

Cool!

> 
> It becomes difficult to remember all the details, however, so some of the 
> notes will not be complete. The updated drivers in the letux-kernel repository 
> should also encode much of the knowledge, but since I don't agree with the 
> practice of having terse code as the oracle with regard to how something 
> works, the idea is to make sure that the documentation describes what is 
> really being done and why.
> 
> Some other things that will get some documentation include the LCD peripheral, 
> which is pretty well understood, plus the MMC, DMA, RTC, USB, I2S (audio) and 
> Ethernet peripherals, and the interrupt controller. Although mainline Linux 
> may provide built-in support for some of these things, it is still worth 
> describing them, I think.
> 
> Nikolaus and I have investigated the JZ4780 RTC peripheral before now (with 
> some advice and insights from Zhou), and I expect the JZ4730 RTC to have 
> similar limitations (with the PCF8563T being used here as a companion chip), 
> and the power management details might also be worth figuring out, just as 
> they are with the JZ4780 on the CI20.

Thanks for the initiaitve.

Best Regards,
Nikolaus