Re: [Linux-gpib-general] gpib_bitbang: problem with GPIO tables

[dave p. <dpe...@gm...>]

Hi Michael,
Yes that is normal - your Pi3 is probably based on a bcm2710 SoC which has
the same line-names as Pi4/5.
Raspberry Pi made a couple of Pi3 variants based on different SoCs. The
table labelled p3 is for the bcm2387 variant.
I should change the names of the table variables to be just 0,1 and 2 to
avoid confusion.
cheers,
-Dave

On Wed, 28 Aug 2024 at 19:00, Michael Schwingen <mi...@sc...>
wrote:

> On 28.08.24 15:37, dave penkler wrote:
> > Hi,
> > The tables come from the different RPi device trees. Earlier Pi3A+,
> > Pi3B+ based on bcm2837 had the same DT as Pi2B based on bcm2836 but
> > with gpio14 and 15 called TXD1 and RXD1 instead of TXD0 and RXD0 as
> > for the Pi2B. The bcm2710 and bcm2711 are all like table index 2. As
> > we have no clean way to test what system we are running on we try the
> > three different tables from the oldest to newest.
>
> That approach works fine for me - however, it feels strange that the Pi3
> uses the Pi4/5 table, while the attempt to use the Pi3 table fails.
>
> Is that normal?
>
>
> cu
>
> Michael
>
>
>
>
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