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

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

[Sherry Sun (OSS)]

From: Sherry Sun <sherry.sun@nxp.com>

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.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
---
 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

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@nxp.com>
>
> 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@nxp.com>
> ---
>  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
>

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

[Sherry Sun]

> On Tue, May 19, 2026 at 01:39:42PM +0800, Sherry Sun (OSS) wrote:
> > From: Sherry Sun <sherry.sun@nxp.com>
> >
> > 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?
> 

Hi Frank,
With the new M.2 Key E framwork, PCIe wifi and SDIO wifi don't share the
regulator, but it cause the following issues, so we still need a separate dtso
for SDIO wifi even we use the M.2 Key framework.

1.  The PCIe M.2 connector use a dedicated w_disable1-gpios, which is
      conflict with reg_usdhc3_vmmc that needed for SDIO wifi to controls the
      w_disable1 pin.

    m2_connector: m2-connector {
        compatible = "pcie-m2-e-connector";
        vpcie3v3-supply = <&reg_m2_pwr>;
        vpcie3v3aux-supply = <&reg_m2_pwr>;
        w_disable1-gpios = <&pcal6416_i2c3_u46 5 GPIO_ACTIVE_LOW>;

        ports {
        ...
    reg_usdhc3_vmmc: regulator-usdhc3 {
        compatible = "regulator-fixed";
        regulator-name = "WLAN_EN";
        regulator-min-microvolt = <3300000>;
        regulator-max-microvolt = <3300000>;
        vin-supply = <&reg_m2_pwr>;
        gpio = <&pcal6416_i2c3_u46 5 GPIO_ACTIVE_HIGH>;

2. New PCIe M.2 keye dts require a new lpuart6_ep remote node to replace
    the old Bluetooth serdev node. 
&lpuart6 {
...
    port {
        lpuart6_ep: endpoint {
            remote-endpoint = <&m2_e_uart_ep>;
        };
    };
};

But the old Bluetooth serdev node is needed for SDIO wifi.
&lpuart6 {
...
    bluetooth {
        compatible = "nxp,88w8987-bt";
    };
};

Best Regards
Sherry

> 
> >
> > Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
> > ---
> >  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
> >

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

[Frank.Li]

From: Frank Li <Frank.Li@nxp.com>


On Tue, 19 May 2026 13:39:42 +0800, Sherry Sun (OSS) wrote:
> 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.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: imx943-evk-sdwifi: add a new dtso to support SDIW612 WiFi
      commit: b7f32cec40560bab12e4f8715e9c0655bf7fa9b5

Best regards,
-- 
Frank Li <Frank.Li@nxp.com>