arm64: dts: ti: k3-am62: Add support for AM625 OLDI IO Control

Add TI DSS OLDI-IO control registers for AM625 DSS. This is a region of
12 32bit registers found in the TI AM625 CTRL_MMR0 register space[0].
They are used to control the characteristics of the OLDI DATA/CLK IO as
needed by the DSS display controller node.

[0]: https://www.ti.com/lit/pdf/spruiv7

Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Signed-off-by: Swamil Jain <s-jain1@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Link: https://patch.msgid.link/20250913064205.4152249-2-s-jain1@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 40fb3c9e674c0112292e7466b7e1c707f6dc3c38..6ab18f66429b75fdd2469ba7b8314f30907223cc 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -76,6 +76,11 @@
                        assigned-clock-parents = <&k3_clks 157 18>;
                        #clock-cells = <0>;
                };
+
+               dss_oldi_io_ctrl: oldi-io-controller@8600 {
+                       compatible = "ti,am625-dss-oldi-io-ctrl", "syscon";
+                       reg = <0x8600 0x200>;
+               };
        };
 
        dmss: bus@48000000 {