Forums - DTS for Wi-Fi and BLE coexistence

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DTS for Wi-Fi and BLE coexistence
Dias
Join Date: 16 Jul 18
Posts: 4
Posted: Wed, 2020-07-08 19:57
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Dear Sir/Madam,
 
I am writing this to ask you a question regarding DTS (Device Tree Source) for Wi-Fi and BLE coexistence.
 
I'm verifying the coexistence behavior on my host (IPQ807x) with BLE device via PTA (Packet Traffic Arbitration).
 
Could you please tell me why the QTZ_WLAN_ACTIVE (GRANT) pin on the host always outputs irregular high-low-high-low signals after running the wifitool commands listed below?
 
I expected that the pin will output high/low to deny/allow BLE device rather than irregular high-low-high-low signals.
 
Could you please correct me if DTS is incorrect?
 
Thanks a lot.
 
 
 
[wifitool commands]
 
wifitool ath1 coex_cfg 14 100000 60000
 
wifitool ath1 coex_cfg 17 0 1 0x28 0x12 2 0x80800505
 
wifitool ath1 coex_cfg 5 1
 
 
 
[PTA pin difinition on my host]
 
QTZ_PRIORITY (PRIORITY/GPIO64): PTA1_1
 
QTZ_WLAN_ACTIVE (GRANT/GPIO65): PTA1_2
 
QTZ_ACTIVE (REQUEST/GPOI66): PTA1_0
 
 
 
[qcom-ipq807x-hk07.dts]
 
&tlmm {
                        pinctrl-0 = <&btcoex_pins>;
                        pinctrl-names = "default";
 
                        btcoex_pins: btcoex_pins {
                                                mux_0 {
                                                                        pins = "gpio64";
                                                                        function = "pta1_1";
                                                                        drive-strength = <6>;
                                                                        bias-pull-down;
                                                };
                                                mux_1 {
                                                                        pins = "gpio65";
                                                                        function = "pta1_2";
                                                                        drive-strength = <6>;
                                                                        bias-pull-down;
                                                };
                                                mux_2 {
                                                                        pins = "gpio66";
                                                                        function = "pta1_0";
                                                                        drive-strength = <6>;
                                                                        bias-pull-down;
                                                };
...
};
 
[qcom-ipq807x-soc.dtsi]
...
wifi1: wifi1@c0000000 {
                        compatible = "qcom,cnss-qca8074v2", "qcom,ipq8074-wifi";
 
                        reg = <0xc000000 0x2000000>;
 
                        btcoex_support = <0x1>;
 
                        wlan_prio_gpio = <65>;
 
                        qcom,hw-mode-id = <1>;
 
...
 
}
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Re: DTS for Wi-Fi and BLE coexistence
Dias
Join Date: 16 Jul 18
Posts: 4
Posted: Tue, 2020-07-14 23:10
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We would be grateful for an early reply.
Thanks a lot.
 
Dias
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