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

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Message-ID: <c34213a8-adc2-4cbb-a255-85486e7042d2@ti.com>
Date: Mon, 15 Sep 2025 11:31:56 +0530
From: Devarsh Thakkar <devarsht@...com>
To: Swamil Jain <s-jain1@...com>, <nm@...com>, <vigneshr@...com>,
        <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <jyri.sarha@....fi>,
        <tomi.valkeinen@...asonboard.com>, <maarten.lankhorst@...ux.intel.com>,
        <mripard@...nel.org>, <tzimmermann@...e.de>, <airlied@...il.com>,
        <simona@...ll.ch>, <aradhya.bhatia@...ux.dev>
CC: <h-shenoy@...com>, <praneeth@...com>, <u-kumar1@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] arm64: dts: ti: k3-am62: Add support for AM625 OLDI
 IO Control

On 13/09/25 12:12, Swamil Jain wrote:
> From: Aradhya Bhatia <a-bhatia1@...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@...com>
> Signed-off-by: Swamil Jain <s-jain1@...com>

Reviewed-by: Devarsh Thakkar <devarsht@...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@...4 {
>   			assigned-clock-parents = <&k3_clks 157 18>;
>   			#clock-cells = <0>;
>   		};
> +
> +		dss_oldi_io_ctrl: oldi-io-controller@...0 {
> +			compatible = "ti,am625-dss-oldi-io-ctrl", "syscon";
> +			reg = <0x8600 0x200>;
> +		};
>   	};
>   
>   	dmss: bus@...00000 {