AM572x with multiple displays

Amritpreet Singh93

Other Parts Discussed in Thread: AM5728

Hi ALL

I would like to connect two LCDs with AM5728 processor. 1st LCD at LCD1 port and 2nd LCD at LCD3 port. Both with 24bit interface. Both are at different resolutions and we are planing to use panel-dpi driver for both of them.

In device tree we do this for connecting 1LCD at LCD1 port(in GPEVM)

&dss {
        ports {
                #address-cells = <1>;
                #size-cells = <0>;

                port {
                        reg = <0>;

                        dpi_out: endpoint {
                                remote-endpoint = <&lcd_in>;
                                data-lines = <24>;
                        };
                };
        };
};

What changes i need to do in device tree, to connect two LCDs??

Regards

Amrit

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

I will forward this to the software team.

0 Yordan Kovachev over 9 years ago

TI__Guru**** 161600 points

Hi,

Have a look at Documentation/devicetree/bindings/ti-omapdss.txt, Documentation/devicetree/bindings/graph.txt
Basically you will need to add:
display2=&lcd2
in the aliases node.

Add &lcd2 dts node, taking a referece from the existing lcd0 node. And finally use the description in graph.txt to add the two ports:
port@0 {
......
};
port@1 {
.....
};

Hope this helps.

Best Regards,
Yordan

0 Amritpreet Singh93 over 9 years ago in reply to Yordan Kovachev

Expert 1285 points

Thanks Yordon
I did the same. Just wanted to confirm it.

Regards
Amrit

Processors

Processors forum

AM572x with multiple displays