Re: [PATCH v2 3/4] arm64: dts: qcom: talos: Add Talos Lyra EVK board

[Dmitry Baryshkov]

On Mon, Oct 12, 2026 at 11:46:28AM +0530, Ruchira Revdekar wrote:
> From: Avaneesh Kumar Dwivedi <avaneesh.dwivedi@xxxxxxxxxxxxxxxx>
> 
> Add the device tree for the Talos Lyra EVK platform which combines
> the Talos Lyra EVK SoM and Lyra carrier board.
> 
> This device tree adds board-specific peripheral configuration on top
> of the SoM, including:
> 
> - Native DisplayPort output
> - GPIO expanders on i2c5
> - SPI-attached TPM (ST33)
> - USB host and peripheral controllers
> - Power and reset keys
> 
> Co-developed-by: Akash Kumar <akakum@xxxxxxxxxxxxxxxx>
> Signed-off-by: Akash Kumar <akakum@xxxxxxxxxxxxxxxx>
> Co-developed-by: Khalid Faisal Ansari <khalid.ansari@xxxxxxxxxxxxxxxx>
> Signed-off-by: Khalid Faisal Ansari <khalid.ansari@xxxxxxxxxxxxxxxx>
> Co-developed-by: Vishnu Santhosh <vishnu.santhosh@xxxxxxxxxxxxxxxx>
> Signed-off-by: Vishnu Santhosh <vishnu.santhosh@xxxxxxxxxxxxxxxx>
> Co-developed-by: Vishnu Saini <vishsain@xxxxxxxxxxxxxxxx>
> Signed-off-by: Vishnu Saini <vishsain@xxxxxxxxxxxxxxxx>
> Tested-by: Nirmesh Kumar Singh <nirmesh.singh@xxxxxxxxxxxxxxxx>
> Signed-off-by: Avaneesh Kumar Dwivedi <avaneesh.dwivedi@xxxxxxxxxxxxxxxx>
> Signed-off-by: Ruchira Revdekar <ruchira.revdekar@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/Makefile           |   1 +
>  arch/arm64/boot/dts/qcom/talos-lyra-evk.dts | 137 ++++++++++++++++++++++++++++
>  2 files changed, 138 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 88230c4e00ea..2f25575e6efe 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -456,6 +456,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm8650-valve-deckard.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sm8750-mtp.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sm8750-qrd.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= talos-evk.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= talos-lyra-evk.dtb
>  
>  talos-evk-el2-dtbs	:= talos-evk.dtb talos-el2.dtbo
>  
> diff --git a/arch/arm64/boot/dts/qcom/talos-lyra-evk.dts b/arch/arm64/boot/dts/qcom/talos-lyra-evk.dts
> new file mode 100644
> index 000000000000..cfb563658fe0
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/talos-lyra-evk.dts
> @@ -0,0 +1,137 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> + */
> +/dts-v1/;
> +
> +#include "talos-lyra-evk-som.dtsi"
> +
> +/ {
> +	model = "Qualcomm Technologies, Inc. QCS615 Talos lyra EVK";

Is it 'lyra' or 'Lyra'?

> +	compatible = "qcom,talos-lyra-evk", "qcom,qcs615", "qcom,sm6150";
> +	chassis-type = "embedded";
> +
> +	dp0-connector {
> +		compatible = "dp-connector";
> +		label = "DP0";
> +		type = "full-size";
> +
> +		hpd-gpios = <&tlmm 104 GPIO_ACTIVE_HIGH>;

Why is it being declared here rather than in the DP controller?
Declaring it here would bypass DP controller state machine.

> +
> +		port {
> +			dp0_connector_in: endpoint {
> +				remote-endpoint = <&mdss_dp0_out>;
> +			};
> +		};
> +	};
> +
> +};
> +

[..]

> +
> +&usb_1 {
> +	dr_mode = "peripheral";

Is it going to only support peripheral mode or is OTG going to be added
later?

> +
> +	status = "okay";
> +};
> +
> +&usb_1_hsphy {
> +	vdd-supply = <&vreg_l5a>;
> +	vdda-pll-supply = <&vreg_l12a>;
> +	vdda-phy-dpdm-supply = <&vreg_l13a>;
> +
> +	status = "okay";
> +};
> +
> +&usb_2 {
> +	dr_mode = "host";

Same question. Is it host-only or will OTG be added later?

Is there a separate VBUS supply if it's the host mode controller?

> +
> +	status = "okay";
> +};
> +

-- 
With best wishes
Dmitry