Re: [PATCH] arm64: dts: imx943-evk-sdwifi: add a new dtso to support SDIW612 WiFi

[Frank Li]

On Tue, May 19, 2026 at 01:39:42PM +0800, Sherry Sun (OSS) wrote:
> From: Sherry Sun <sherry.sun@xxxxxxx>
>
> Add a new imx943-evk-sdwifi.dtso to support SDIW612 WiFi chip on
> imx943-evk board, the default imx943-evk.dtb is used to support PCIE
> AW693 WiFi.
>
> Use separate dts for SDIW612 and PCIe AW693 WiFi to avoid the shared
> regulator between SDIO and PCIe buses, the random probe order between
> the two buses may break the PCIe initialization sequence which cause
> AW693 has probability of failing to detect.

Mani said M.2 Key E patch already applied. Dose use M.2 Key E fix this
problem?

Frank

>
> Signed-off-by: Sherry Sun <sherry.sun@xxxxxxx>
> ---
>  arch/arm64/boot/dts/freescale/Makefile            |  3 +++
>  .../boot/dts/freescale/imx943-evk-sdwifi.dtso     | 15 +++++++++++++++
>  arch/arm64/boot/dts/freescale/imx943-evk.dts      |  2 +-
>  3 files changed, 19 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm64/boot/dts/freescale/imx943-evk-sdwifi.dtso
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index 0a4dabac5de4..657e0915ca69 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -516,6 +516,9 @@ imx943-evk-pcie0-ep-dtbs += imx943-evk.dtb imx-pcie0-ep.dtbo
>  imx943-evk-pcie1-ep-dtbs += imx943-evk.dtb imx-pcie1-ep.dtbo
>  dtb-$(CONFIG_ARCH_MXC) += imx943-evk-pcie0-ep.dtb imx943-evk-pcie1-ep.dtb
>
> +imx943-evk-sdwifi-dtbs := imx943-evk.dtb imx943-evk-sdwifi.dtbo
> +dtb-$(CONFIG_ARCH_MXC) += imx943-evk-sdwifi.dtb
> +
>  dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-ab2.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-evk.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-frdm.dtb
> diff --git a/arch/arm64/boot/dts/freescale/imx943-evk-sdwifi.dtso b/arch/arm64/boot/dts/freescale/imx943-evk-sdwifi.dtso
> new file mode 100644
> index 000000000000..59cc1c27b9b9
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx943-evk-sdwifi.dtso
> @@ -0,0 +1,15 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2026 NXP
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&pcie0 {
> +	status = "disabled";
> +};
> +
> +&usdhc3 {
> +	status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
> index fe4fc512d95d..1346a6a56883 100644
> --- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
> @@ -1153,7 +1153,7 @@ &usdhc3 {
>  	keep-power-in-suspend;
>  	non-removable;
>  	wakeup-source;
> -	status = "okay";
> +	status = "disabled";
>  };
>
>  &wdog3 {
>
> base-commit: 5f9e9f83aee0fa8f2124c6f192505de2cdf7c5dc
> --
> 2.37.1
>