[AMD Official Use Only - General] > -----Original Message----- > From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> > Sent: Thursday, July 14, 2022 5:29 PM > To: Michal Simek <michal.simek@xxxxxxxxxx>; Shubhrajyoti Datta > <shubhrajyoti.datta@xxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; Krzysztof > Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx> > Cc: Shubhrajyoti Datta <shubhraj@xxxxxxxxxx>; linux-serial@xxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; Srinivas Goud > <sgoud@xxxxxxxxxx> > Subject: Re: [PATCH 1/2] dt-bindings: serial: pl011: Add 'arm,xlnx-uart' > > CAUTION: This message has originated from an External Source. Please use > proper judgment and caution when opening attachments, clicking links, or > responding to this email. > > > On 14/07/2022 12:55, Michal Simek wrote: > > Hi Rob and Krzysztof, > > > > On 6/14/22 14:21, Shubhrajyoti Datta wrote: > >>>> > >> <snip> > >> > >>> > >>> No, I don't know what the differences are in your h/w. You have ID > >>> registers, but changed the IP and didn't change the ID registers? > >>> How has the IP changed? > >>> > >> > >> The IP is not changed and the ID registers are not updated. > >> The limitation is coming from the AXI port that the IP is connected to. > >> The axi port is allowing only the 32 bit access. > >> The same information will be updated in the Versal TRM. > > > > Can you please give us your recommendation how to process with this? > > Unfortunately I don't think that anyone remembers context from last year, > especially me who was not Cced. Rob responded at end of March and it took > two months to get back any answer. Such slow response time from submitter > does not help to stay in the context. :( I had to contact the hardware team and get the details on the issue it took me sometime to get a response. I will summarize We are using the ip from ARM but the AXI port that we hooked has a limitation that it allows only 32 bit accesses. So to tide over the and differentiate I am adding a new compatible arm,xlnx-uart. > > > Best regards, > Krzysztof
