On 29/10/2024 18:30, Raj Kumar Bhagat wrote:
> The RDP433 is a Qualcomm Reference Design Platform based on the
> IPQ9574. It has three QCN9274 WiFi devices connected to PCIe1, PCIe2,
> and PCIe3. These devices are also connected among themselves via
> WSI connection. This WSI connection is essential to exchange control
> information among these devices
>
> The WSI connection in RDP433 is represented below:
>
> +-------+ +-------+ +-------+
> | pcie2 | | pcie3 | | pcie1 |
> | | | | | |
> +----->| wsi |------->| wsi |------->| wsi |-----+
> | | grp 0 | | grp 0 | | grp 0 | |
> | +-------+ +-------+ +-------+ |
> +------------------------------------------------------+
>
> Based on the above, the WSI properties for QCN9274 at pcie2 are
> (considering QCN9274 at pcie2 is WSI master):
>
> qcom,wsi-group-id = 0
> qcom,wsi-master
> ports:
> tx-port (port@0): endpoint at pcie3 RX port.
> rx-port (port@1): endpoint at pcie1 TX port.
>
> Hence, add WiFi nodes with WSI properties for all three QCN9274
> devices connected to RDP433.
>
> Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@xxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts | 116 +++++++++++++++++++-
> 1 file changed, 115 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> index 165ebbb59511..d0ecaefe5b41 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> +++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> @@ -3,7 +3,7 @@
> * IPQ9574 RDP433 board device tree source
> *
> * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
> - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
> */
>
> /dts-v1/;
> @@ -27,6 +27,44 @@ &pcie1 {
> perst-gpios = <&tlmm 26 GPIO_ACTIVE_LOW>;
> wake-gpios = <&tlmm 27 GPIO_ACTIVE_LOW>;
> status = "okay";
> +
> + pcie@0 {
> + device_type = "pci";
> + reg = <0x0 0x0 0x0 0x0 0x0>;
> + #address-cells = <3>;
> + #size-cells = <2>;
> + ranges;
> +
> + wifi1@0 {
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
Best regards,
Krzysztof
