[PATCH 0/2] Enable OLDI support on AM62X

[PATCH 0/2] Enable OLDI support on AM62X

[Swamil Jain]

The AM62x SoC features 2 OLDI TXes each, which makes it possible to
connect them in dual-link or cloned single-link OLDI display modes. This
series enables OLDI support on AM62X[1].

[1]: https://www.ti.com/product/AM625

Aradhya Bhatia (2):
  arm64: dts: ti: k3-am62: Add support for AM625 OLDI IO Control
  arm64: dts: ti: k3-am625: Add OLDI support

 arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 52 ++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

[PATCH 1/2] arm64: dts: ti: k3-am62: Add support for AM625 OLDI IO Control

[Swamil Jain]

From: Aradhya Bhatia <a-bhatia1@ti.com>

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>
---
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 029380dc1a35..dcc71db8afd4 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -76,6 +76,11 @@ audio_refclk1: clock-controller@82e4 {
 			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 {

[PATCH 2/2] arm64: dts: ti: k3-am625: Add OLDI support

[Swamil Jain]

From: Aradhya Bhatia <a-bhatia1@ti.com>

The AM625 SoC has 2 OLDI TXes under the DSS. Add their support.

Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Signed-off-by: Swamil Jain <s-jain1@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 47 ++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index dcc71db8afd4..d240c157d819 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -793,6 +793,53 @@ dss: dss@30200000 {
 		interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
 		status = "disabled";
 
+		oldi-transmitters {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			oldi0: oldi@0 {
+				reg = <0>;
+				clocks = <&k3_clks 186 0>;
+				clock-names = "serial";
+				ti,oldi-io-ctrl = <&dss_oldi_io_ctrl>;
+				status = "disabled";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					oldi0_port0: port@0 {
+						reg = <0>;
+					};
+
+					oldi0_port1: port@1 {
+						reg = <1>;
+					};
+				};
+			};
+
+			oldi1: oldi@1 {
+				reg = <1>;
+				clocks = <&k3_clks 186 0>;
+				clock-names = "serial";
+				ti,oldi-io-ctrl = <&dss_oldi_io_ctrl>;
+				status = "disabled";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					oldi1_port0: port@0 {
+						reg = <0>;
+					};
+
+					oldi1_port1: port@1 {
+						reg = <1>;
+					};
+				};
+			};
+		};
+
 		dss_ports: ports {
 			#address-cells = <1>;
 			#size-cells = <0>;

Re: [PATCH 1/2] arm64: dts: ti: k3-am62: Add support for AM625 OLDI IO Control

[Devarsh Thakkar]

On 13/09/25 12:12, Swamil Jain wrote:
> From: Aradhya Bhatia <a-bhatia1@ti.com>
> 
> 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>

Regards
Devarsh
> ---
>   arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> index 029380dc1a35..dcc71db8afd4 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> @@ -76,6 +76,11 @@ audio_refclk1: clock-controller@82e4 {
>   			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 {

Re: [PATCH 2/2] arm64: dts: ti: k3-am625: Add OLDI support

[Devarsh Thakkar]

On 13/09/25 12:12, Swamil Jain wrote:
> From: Aradhya Bhatia <a-bhatia1@ti.com>
> 
> The AM625 SoC has 2 OLDI TXes under the DSS. Add their support.
> 
> 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>

Regards
Devarsh

> ---
>   arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 47 ++++++++++++++++++++++++
>   1 file changed, 47 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> index dcc71db8afd4..d240c157d819 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> @@ -793,6 +793,53 @@ dss: dss@30200000 {
>   		interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
>   		status = "disabled";
>   
> +		oldi-transmitters {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			oldi0: oldi@0 {
> +				reg = <0>;
> +				clocks = <&k3_clks 186 0>;
> +				clock-names = "serial";
> +				ti,oldi-io-ctrl = <&dss_oldi_io_ctrl>;
> +				status = "disabled";
> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +
> +					oldi0_port0: port@0 {
> +						reg = <0>;
> +					};
> +
> +					oldi0_port1: port@1 {
> +						reg = <1>;
> +					};
> +				};
> +			};
> +
> +			oldi1: oldi@1 {
> +				reg = <1>;
> +				clocks = <&k3_clks 186 0>;
> +				clock-names = "serial";
> +				ti,oldi-io-ctrl = <&dss_oldi_io_ctrl>;
> +				status = "disabled";
> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +
> +					oldi1_port0: port@0 {
> +						reg = <0>;
> +					};
> +
> +					oldi1_port1: port@1 {
> +						reg = <1>;
> +					};
> +				};
> +			};
> +		};
> +
>   		dss_ports: ports {
>   			#address-cells = <1>;
>   			#size-cells = <0>;

Re: [PATCH 0/2] Enable OLDI support on AM62X

[Vignesh Raghavendra]

Hi Swamil Jain,

On Sat, 13 Sep 2025 12:12:03 +0530, Swamil Jain wrote:
> The AM62x SoC features 2 OLDI TXes each, which makes it possible to
> connect them in dual-link or cloned single-link OLDI display modes. This
> series enables OLDI support on AM62X[1].
> 
> [1]: https://www.ti.com/product/AM625
> 
> Aradhya Bhatia (2):
>   arm64: dts: ti: k3-am62: Add support for AM625 OLDI IO Control
>   arm64: dts: ti: k3-am625: Add OLDI support
> 
> [...]

I have applied the following to branch ti-next on [1].
Thank you!

[1/2] arm64: dts: ti: k3-am62: Add support for AM625 OLDI IO Control
      commit: 779ea073dba35a8f29c8403684c6e0177504775b
[2/2] arm64: dts: ti: k3-am625: Add OLDI support
      commit: a00ee8014d5b6bb00bc41d7fc947fd52f53c9209

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
--
Vignesh