Re: [PATCH 4/4] arm64: dts: qcom: Add Shikra CQM and CQS EVK boards

From: Dmitry Baryshkov

Date: Wed May 13 2026 - 08:08:52 EST

On Tue, May 12, 2026 at 09:38:07AM +0530, Komal Bajaj wrote:
> Add device trees for the Shikra EVK platform, which combines the CQM
> SoM variant with a common carrier board.
>
> Two EVK boards are introduced:
> - shikra-cqm-evk.dts: pairs with CQM SoM (retail, with modem)
> - shikra-cqs-evk.dts: pairs with CQM SoM (retail, board has no modem

CQS

> support)
>
> Also add shikra-evk.dtsi common across both EVK boards.

What is the split between shikra-cq[ms]-evk.dts and shikra-evk.dtsi?

>
> Each board DTS enables USB (peripheral mode) with the appropriate PMIC
> regulator supplies for the QUSB2 and QMP PHYs, and eMMC with the
> correct vmmc/vqmmc supplies for the CQM SoM's PMIC.
>
> Co-developed-by: Imran Shaik <imran.shaik@xxxxxxxxxxxxxxxx>
> Signed-off-by: Imran Shaik <imran.shaik@xxxxxxxxxxxxxxxx>
> Co-developed-by: Krishna Kurapati <krishna.kurapati@xxxxxxxxxxxxxxxx>
> Signed-off-by: Krishna Kurapati <krishna.kurapati@xxxxxxxxxxxxxxxx>
> Co-developed-by: Monish Chunara <quic_mchunara@xxxxxxxxxxx>
> Signed-off-by: Monish Chunara <quic_mchunara@xxxxxxxxxxx>
> Co-developed-by: Rakesh Kota <rakesh.kota@xxxxxxxxxxxxxxxx>
> Signed-off-by: Rakesh Kota <rakesh.kota@xxxxxxxxxxxxxxxx>
> Co-developed-by: Raviteja Laggyshetty <raviteja.laggyshetty@xxxxxxxxxxxxxxxx>
> Signed-off-by: Raviteja Laggyshetty <raviteja.laggyshetty@xxxxxxxxxxxxxxxx>
> Co-developed-by: Sneh Mankad <sneh.mankad@xxxxxxxxxxxxxxxx>
> Signed-off-by: Sneh Mankad <sneh.mankad@xxxxxxxxxxxxxxxx>
> Co-developed-by: Vishnu Santhosh <vishnu.santhosh@xxxxxxxxxxxxxxxx>
> Signed-off-by: Vishnu Santhosh <vishnu.santhosh@xxxxxxxxxxxxxxxx>
> Co-developed-by: Xueyao An <xueyao.an@xxxxxxxxxxxxxxxx>
> Signed-off-by: Xueyao An <xueyao.an@xxxxxxxxxxxxxxxx>
> Signed-off-by: Komal Bajaj <komal.bajaj@xxxxxxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/Makefile | 2 +
> arch/arm64/boot/dts/qcom/shikra-cqm-evk.dts | 61 +++++++++++++++++++++++++++++
> arch/arm64/boot/dts/qcom/shikra-cqs-evk.dts | 61 +++++++++++++++++++++++++++++
> arch/arm64/boot/dts/qcom/shikra-evk.dtsi | 13 ++++++
> 4 files changed, 137 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index cc42829f92eb..6de783bcd133 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -328,6 +328,8 @@ dtb-$(CONFIG_ARCH_QCOM) += sdm850-huawei-matebook-e-2019.dtb
> dtb-$(CONFIG_ARCH_QCOM) += sdm850-lenovo-yoga-c630.dtb
> dtb-$(CONFIG_ARCH_QCOM) += sdm850-samsung-w737.dtb
> dtb-$(CONFIG_ARCH_QCOM) += sdx75-idp.dtb
> +dtb-$(CONFIG_ARCH_QCOM) += shikra-cqm-evk.dtb
> +dtb-$(CONFIG_ARCH_QCOM) += shikra-cqs-evk.dtb
> dtb-$(CONFIG_ARCH_QCOM) += sm4250-oneplus-billie2.dtb
> dtb-$(CONFIG_ARCH_QCOM) += sm4450-qrd.dtb
> dtb-$(CONFIG_ARCH_QCOM) += sm6115-fxtec-pro1x.dtb
> diff --git a/arch/arm64/boot/dts/qcom/shikra-cqm-evk.dts b/arch/arm64/boot/dts/qcom/shikra-cqm-evk.dts
> new file mode 100644
> index 000000000000..12eeca84832c
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/shikra-cqm-evk.dts
> @@ -0,0 +1,61 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> + */
> +
> +/dts-v1/;
> +
> +#include "shikra-cqm-som.dtsi"
> +#include "shikra-evk.dtsi"
> +
> +/ {
> + model = "Qualcomm Technologies, Inc. Shikra CQM EVK";
> + compatible = "qcom,shikra-cqm-evk", "qcom,shikra-cqm-som", "qcom,shikra";
> + chassis-type = "embedded";
> +
> + aliases {
> + mmc0 = &sdhc_1;
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +};
> +
> +&sdhc_1 {
> + vmmc-supply = <&pm4125_l20>;
> + vqmmc-supply = <&pm4125_l14>;
> +
> + pinctrl-0 = <&sdc1_state_on>;
> + pinctrl-1 = <&sdc1_state_off>;
> + pinctrl-names = "default", "sleep";
> +
> + non-removable;
> + supports-cqe;
> + no-sdio;
> + no-sd;
> +
> + status = "okay";
> +};
> +
> +&usb_1 {
> + dr_mode = "peripheral";
> +
> + status = "okay";
> +};
> +
> +&usb_1_hsphy {
> + vdd-supply = <&pm4125_l12>;
> + vdda-pll-supply = <&pm4125_l13>;
> + vdda-phy-dpdm-supply = <&pm4125_l21>;
> +
> + status = "okay";
> +};
> +
> +&usb_qmpphy {
> + vdda-phy-supply = <&pm4125_l8>;
> + vdda-pll-supply = <&pm4125_l13>;
> +
> + status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/qcom/shikra-cqs-evk.dts b/arch/arm64/boot/dts/qcom/shikra-cqs-evk.dts
> new file mode 100644
> index 000000000000..bc93282f64cf
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/shikra-cqs-evk.dts
> @@ -0,0 +1,61 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> + */
> +
> +/dts-v1/;
> +
> +#include "shikra-cqm-som.dtsi"
> +#include "shikra-evk.dtsi"
> +
> +/ {
> + model = "Qualcomm Technologies, Inc. Shikra CQS EVK";
> + compatible = "qcom,shikra-cqs-evk", "qcom,shikra-cqm-som", "qcom,shikra";
> + chassis-type = "embedded";
> +
> + aliases {
> + mmc0 = &sdhc_1;
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +};
> +
> +&sdhc_1 {
> + vmmc-supply = <&pm4125_l20>;
> + vqmmc-supply = <&pm4125_l14>;
> +
> + pinctrl-0 = <&sdc1_state_on>;
> + pinctrl-1 = <&sdc1_state_off>;
> + pinctrl-names = "default", "sleep";
> +
> + non-removable;
> + supports-cqe;
> + no-sdio;
> + no-sd;
> +
> + status = "okay";
> +};
> +
> +&usb_1 {
> + dr_mode = "peripheral";
> +
> + status = "okay";
> +};
> +
> +&usb_1_hsphy {
> + vdd-supply = <&pm4125_l12>;
> + vdda-pll-supply = <&pm4125_l13>;
> + vdda-phy-dpdm-supply = <&pm4125_l21>;
> +
> + status = "okay";
> +};
> +
> +&usb_qmpphy {
> + vdda-phy-supply = <&pm4125_l8>;
> + vdda-pll-supply = <&pm4125_l13>;
> +
> + status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/qcom/shikra-evk.dtsi b/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
> new file mode 100644
> index 000000000000..fae8c75b68b3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
> @@ -0,0 +1,13 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> + */
> +
> +&qupv3_0 {
> + firmware-name = "qcom/shikra/qupv3fw.elf";
> + status = "okay";
> +};
> +
> +&uart0 {
> + status = "okay";
> +};
>
> --
> 2.34.1
>

--
With best wishes
Dmitry