[PATCH v6 00/17] Introduce initial TI's J784S4 and AM69 support

[Marcel Ziswiler]

On Thu, 2023-12-14 at 14:28 -0600, Andrew Davis wrote:
> On 12/14/23 2:10 PM, bb at ti.com wrote:
> > On December 14, 2023 thus sayeth Marcel Ziswiler:
> > > Hi Apurva
> > > 
> > > Thanks!
> > > 
> > > On Wed, 2023-12-06 at 18:07 +0530, Apurva Nandan wrote:
> > > > Hello Everyone!
> > > > 
> > > > This series will introduce basic support (SD and UART) support for Texas
> > > > Instruments J784S4 EVM.
> > > 
> > > For the whole series:
> > > 
> > > Tested-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
> > > 
> > > However, one thing I noticed is that with upstream TF-A I do get the following errors:
> > > 
> > > NOTICE:  BL31: v2.10.0  (release):v2.10.0-76-g02091541d
> > > NOTICE:  BL31: Built : 18:13:08, Dec 14 2023
> > > ERROR:   Failed to get response (-19)
> > > ERROR:   Transfer send failed (-19)
> > > ERROR:   Unable to query firmware capabilities (-19)
> > > 
> > > While with latest TF-A from downstream TI BSP (both 9.0 and 9.1 use the same versin) I do not get any
> > > errors:
> > > 
> > > NOTICE:  BL31: v2.9(release):v2.9.0-614-gd7a7135d3
> > > NOTICE:  BL31: Built : 18:40:38, Dec 14 2023
> > > 
> > 
> > What version of TIFS are you running? Not getting a response usually
> > means firmware is dead or we're not using the right thread to talk.
> > 
> 
> In this case the early versions of TIFS/DM for J784S4/AM69 had
> a bug where the "query firmware capabilities" API was left disabled.
> This is fixed in the next version of firmware, this error message
> is harmless today anyway (no LPM yet).

No, I was always running the latest from the ti-linux-firmware branch:

SYSFW ABI: 3.1 (firmware rev 0x0009 '9.1.2--v09.01.02 (Kool Koala)')

So, it is really TF-A which seems to cause the issue here.

> Andrew

Cheers

Marcel