Add a node for the WCN6750 WiFi found with the Milos SoC.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
---
 arch/arm64/boot/dts/qcom/milos.dtsi | 46 +++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/milos.dtsi b/arch/arm64/boot/dts/qcom/milos.dtsi
index 024e1c9992fe..80feb3e9d3e2 100644
--- a/arch/arm64/boot/dts/qcom/milos.dtsi
+++ b/arch/arm64/boot/dts/qcom/milos.dtsi
@@ -2043,6 +2043,52 @@ gic_its: msi-controller@17140000 {
 			};
 		};
 
+		wifi: wifi@17110040 {
+			compatible = "qcom,wcn6750-wifi";
+			reg = <0x0 0x17110040 0x0 0x0>;
+
+			iommus = <&apps_smmu 0x1400 0x1>;
+
+			interrupts = <GIC_SPI 768 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 769 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 770 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 771 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 772 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 773 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 774 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 775 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 776 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 777 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 778 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 779 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 780 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 781 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 782 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 783 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 784 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 785 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 786 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 787 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 788 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 789 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 790 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 791 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 792 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 793 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 794 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 795 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 796 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 797 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 798 IRQ_TYPE_EDGE_RISING 0>,
+				     <GIC_SPI 799 IRQ_TYPE_EDGE_RISING 0>;
+
+			qcom,rproc = <&remoteproc_wpss>;
+			qcom,smem-states = <&smp2p_wlan_out 0>;
+			qcom,smem-state-names = "wlan-smp2p-out";
+
+			status = "disabled";
+		};
+
 		timer@17420000 {
 			compatible = "arm,armv7-timer-mem";
 			reg = <0x0 0x17420000 0x0 0x1000>;

-- 
2.52.0

On 1/16/26 3:50 PM, Luca Weiss wrote:
> Add a node for the WCN6750 WiFi found with the Milos SoC.
> 
> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> ---
>  arch/arm64/boot/dts/qcom/milos.dtsi | 46 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/milos.dtsi b/arch/arm64/boot/dts/qcom/milos.dtsi
> index 024e1c9992fe..80feb3e9d3e2 100644
> --- a/arch/arm64/boot/dts/qcom/milos.dtsi
> +++ b/arch/arm64/boot/dts/qcom/milos.dtsi
> @@ -2043,6 +2043,52 @@ gic_its: msi-controller@17140000 {
>  			};
>  		};
>  
> +		wifi: wifi@17110040 {
> +			compatible = "qcom,wcn6750-wifi";
> +			reg = <0x0 0x17110040 0x0 0x0>;

This reg doesn't.. sound.. very.. good..

The size being 0 is of course wrong, but perhaps more interestingly
the base address is a register within the GIC..

> +			iommus = <&apps_smmu 0x1400 0x1>;

And this is a PCIe stream

But I see kodiak has the exact same setup..

After digging a little into the driver, that 'reg' is apparently
indeed consumed, as a base for PCI MSIs.. I feel like there should be
some better way to express this.. non-everyday setup

There's this commit message:

commit 00fd24089b8154ddf5b3e724e2c4c9974b9ba91e
Author: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Date:   Fri Apr 29 22:34:54 2022 +0530

    dt: bindings: net: add bindings of WCN6750 for ath11k
    
    WCN6750 is the WLAN chip on Qualcomm Snapdragon SoC SC7280;
    Though being a PCIe based solution, it is not attached to
    the APSS processor (Application Processor SubSystem), it is
    instead attached to another tiny processor called WPSS Q6
    processor (Wireless Processor SubSystem) on the SC7280 MSM,
    where the WLAN firmware runs, and it is the WLAN firmware
    running on the Q6 processor which enumerates WCN6750, as a
    result APPS processor would never know such a device being
    present in the system and would not detect the WCN6750
    hardware unless and otherwise WCN6750 is registered as a
    platform device. This is the reason behind adding WCN6750
    WLAN node in the device tree.
    
    Add WCN6750 wireless driver support, its based on ath11k driver.

Sorry to hijack this patch, but I am not comfortable with this binding
as-is..

Adding +Jeff in case he has any thoughts

Konrad

On Fri, Jan 16, 2026 at 03:50:49PM +0100, Luca Weiss wrote:
> Add a node for the WCN6750 WiFi found with the Milos SoC.
> 
> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> ---
>  arch/arm64/boot/dts/qcom/milos.dtsi | 46 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry