Add a node for the PMU module of the WCN6750 present on the
qcs6490-rb3gen board and assign its power outputs to the Bluetooth
module.

Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
---
 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
 1 file changed, 164 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index 27695bd54220..07650648214e 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: BSD-3-Clause
 /*
- * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 /dts-v1/;
@@ -33,6 +33,7 @@
 
 	aliases {
 		serial0 = &uart5;
+		serial1 = &uart7;
 	};
 
 	chosen {
@@ -217,6 +218,63 @@
 		regulator-min-microvolt = <3700000>;
 		regulator-max-microvolt = <3700000>;
 	};
+
+	wcn6750-pmu {
+		compatible = "qcom,wcn6750-pmu";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_en>;
+		vddaon-supply = <&vreg_s7b_0p972>;
+		vddasd-supply = <&vreg_l11c_2p8>;
+		vddpmu-supply = <&vreg_s7b_0p972>;
+		vddrfa0p8-supply = <&vreg_s7b_0p972>;
+		vddrfa1p2-supply = <&vreg_s8b_1p272>;
+		vddrfa1p7-supply = <&vreg_s1b_1p872>;
+		vddrfa2p2-supply = <&vreg_s1c_2p19>;
+
+		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
+
+		regulators {
+			vreg_pmu_rfa_cmn: ldo0 {
+				regulator-name = "vreg_pmu_rfa_cmn";
+			};
+
+			vreg_pmu_aon_0p59: ldo1 {
+				regulator-name = "vreg_pmu_aon_0p59";
+			};
+
+			vreg_pmu_wlcx_0p8: ldo2 {
+				regulator-name = "vreg_pmu_wlcx_0p8";
+			};
+
+			vreg_pmu_wlmx_0p85: ldo3 {
+				regulator-name = "vreg_pmu_wlmx_0p85";
+			};
+
+			vreg_pmu_btcmx_0p85: ldo4 {
+				regulator-name = "vreg_pmu_btcmx_0p85";
+			};
+
+			vreg_pmu_rfa_0p8: ldo5 {
+				regulator-name = "vreg_pmu_rfa_0p8";
+			};
+
+			vreg_pmu_rfa_1p2: ldo6 {
+				regulator-name = "vreg_pmu_rfa_1p2";
+			};
+
+			vreg_pmu_rfa_1p7: ldo7 {
+				regulator-name = "vreg_pmu_rfa_1p7";
+			};
+
+			vreg_pmu_pcie_0p9: ldo8 {
+				regulator-name = "vreg_pmu_pcie_0p9";
+			};
+
+			vreg_pmu_pcie_1p8: ldo9 {
+				regulator-name = "vreg_pmu_pcie_1p8";
+			};
+		};
+	};
 };
 
 &apps_rsc {
@@ -758,6 +816,39 @@
 	status = "okay";
 };
 
+&qup_uart7_cts {
+	/*
+	 * Configure a bias-bus-hold on CTS to lower power
+	 * usage when Bluetooth is turned off. Bus hold will
+	 * maintain a low power state regardless of whether
+	 * the Bluetooth module drives the pin in either
+	 * direction or leaves the pin fully unpowered.
+	 */
+	bias-bus-hold;
+};
+
+&qup_uart7_rts {
+	/* We'll drive RTS, so no pull */
+	drive-strength = <2>;
+	bias-disable;
+};
+
+&qup_uart7_rx {
+	/*
+	 * Configure a pull-up on RX. This is needed to avoid
+	 * garbage data when the TX pin of the Bluetooth module is
+	 * in tri-state (module powered off or not driving the
+	 * signal yet).
+	 */
+	bias-pull-up;
+};
+
+&qup_uart7_tx {
+	/* We'll drive TX, so no pull */
+	drive-strength = <2>;
+	bias-disable;
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
@@ -801,12 +892,84 @@
 &tlmm {
 	gpio-reserved-ranges = <32 2>, /* ADSP */
 			       <48 4>; /* NFC */
+	bt_en: bt-en-state {
+		pins = "gpio85";
+		function = "gpio";
+		output-low;
+		bias-disable;
+	};
+	qup_uart7_sleep: qup_uart7_sleep {
+		qup_uart7_sleep_cts: qup-uart7-sleep-cts-state {
+			pins = "gpio28";
+			function = "gpio";
+			/*
+			 * Configure a bias-bus-hold on CTS to lower power
+			 * usage when Bluetooth is turned off. Bus hold will
+			 * maintain a low power state regardless of whether
+			 * the Bluetooth module drives the pin in either
+			 * direction or leaves the pin fully unpowered.
+			 */
+			bias-bus-hold;
+		};
+
+		qup_uart7_sleep_rts: qup-uart7-sleep-rts-state {
+			pins = "gpio29";
+			function = "gpio";
+			/*
+			 * Configure pull-down on RTS. As RTS is active low
+			 * signal, pull it low to indicate the BT SoC that it
+			 * can wakeup the system anytime from suspend state by
+			 * pulling RX low (by sending wakeup bytes).
+			 */
+			bias-pull-down;
+		};
+
+		qup_uart7_sleep_rx: qup-uart7-sleep-rx-state {
+			pins = "gpio31";
+			function = "gpio";
+			/*
+			 * Configure a pull-up on RX. This is needed to avoid
+			 * garbage data when the TX pin of the Bluetooth module
+			 * is floating which may cause spurious wakeups.
+			 */
+			bias-pull-up;
+		};
+
+		qup_uart7_sleep_tx: qup-uart7-sleep-tx-state {
+			pins = "gpio30";
+			function = "gpio";
+			/*
+			 * Configure pull-up on TX when it isn't actively driven
+			 * to prevent BT SoC from receiving garbage during sleep.
+			 */
+			bias-pull-up;
+		};
+	};
 };
 
 &uart5 {
 	status = "okay";
 };
 
+&uart7 {
+	/delete-property/interrupts;
+	interrupts-extended = <&intc GIC_SPI 608 IRQ_TYPE_LEVEL_HIGH>,
+				<&tlmm 31 IRQ_TYPE_EDGE_FALLING>;
+	pinctrl-1 = <&qup_uart7_sleep>;
+	pinctrl-names = "default", "sleep";
+	status = "okay";
+	bluetooth: bluetooth {
+		compatible = "qcom,wcn6750-bt";
+		vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
+		vddaon-supply = <&vreg_pmu_aon_0p59>;
+		vddbtcmx-supply = <&vreg_pmu_btcmx_0p85>;
+		vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+		vddrfa1p7-supply = <&vreg_pmu_rfa_1p7>;
+		vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+		max-speed = <3200000>;
+	};
+};
+
 &usb_1 {
 	status = "okay";
 };
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

On Wed, Dec 04, 2024 at 06:47:04PM +0530, Janaki Ramaiah Thota wrote:
> Add a node for the PMU module of the WCN6750 present on the
> qcs6490-rb3gen board and assign its power outputs to the Bluetooth
> module.
> 
> Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
>  1 file changed, 164 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> index 27695bd54220..07650648214e 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> @@ -1,6 +1,6 @@
>  // SPDX-License-Identifier: BSD-3-Clause
>  /*
> - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
>   */
>  
>  /dts-v1/;
> @@ -33,6 +33,7 @@
>  
>  	aliases {
>  		serial0 = &uart5;
> +		serial1 = &uart7;
>  	};
>  
>  	chosen {
> @@ -217,6 +218,63 @@
>  		regulator-min-microvolt = <3700000>;
>  		regulator-max-microvolt = <3700000>;
>  	};
> +
> +	wcn6750-pmu {
> +		compatible = "qcom,wcn6750-pmu";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&bt_en>;
> +		vddaon-supply = <&vreg_s7b_0p972>;
> +		vddasd-supply = <&vreg_l11c_2p8>;
> +		vddpmu-supply = <&vreg_s7b_0p972>;
> +		vddrfa0p8-supply = <&vreg_s7b_0p972>;
> +		vddrfa1p2-supply = <&vreg_s8b_1p272>;
> +		vddrfa1p7-supply = <&vreg_s1b_1p872>;
> +		vddrfa2p2-supply = <&vreg_s1c_2p19>;
> +
> +		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
> +
> +		regulators {
> +			vreg_pmu_rfa_cmn: ldo0 {
> +				regulator-name = "vreg_pmu_rfa_cmn";
> +			};
> +
> +			vreg_pmu_aon_0p59: ldo1 {
> +				regulator-name = "vreg_pmu_aon_0p59";
> +			};
> +
> +			vreg_pmu_wlcx_0p8: ldo2 {
> +				regulator-name = "vreg_pmu_wlcx_0p8";
> +			};
> +
> +			vreg_pmu_wlmx_0p85: ldo3 {
> +				regulator-name = "vreg_pmu_wlmx_0p85";
> +			};
> +
> +			vreg_pmu_btcmx_0p85: ldo4 {
> +				regulator-name = "vreg_pmu_btcmx_0p85";
> +			};
> +
> +			vreg_pmu_rfa_0p8: ldo5 {
> +				regulator-name = "vreg_pmu_rfa_0p8";
> +			};
> +
> +			vreg_pmu_rfa_1p2: ldo6 {
> +				regulator-name = "vreg_pmu_rfa_1p2";
> +			};
> +
> +			vreg_pmu_rfa_1p7: ldo7 {
> +				regulator-name = "vreg_pmu_rfa_1p7";
> +			};
> +
> +			vreg_pmu_pcie_0p9: ldo8 {
> +				regulator-name = "vreg_pmu_pcie_0p9";
> +			};
> +
> +			vreg_pmu_pcie_1p8: ldo9 {
> +				regulator-name = "vreg_pmu_pcie_1p8";
> +			};
> +		};
> +	};
>  };
>  
>  &apps_rsc {
> @@ -758,6 +816,39 @@
>  	status = "okay";
>  };
>  
> +&qup_uart7_cts {
> +	/*
> +	 * Configure a bias-bus-hold on CTS to lower power
> +	 * usage when Bluetooth is turned off. Bus hold will
> +	 * maintain a low power state regardless of whether
> +	 * the Bluetooth module drives the pin in either
> +	 * direction or leaves the pin fully unpowered.
> +	 */
> +	bias-bus-hold;
> +};
> +
> +&qup_uart7_rts {
> +	/* We'll drive RTS, so no pull */
> +	drive-strength = <2>;
> +	bias-disable;
> +};
> +
> +&qup_uart7_rx {
> +	/*
> +	 * Configure a pull-up on RX. This is needed to avoid
> +	 * garbage data when the TX pin of the Bluetooth module is
> +	 * in tri-state (module powered off or not driving the
> +	 * signal yet).
> +	 */
> +	bias-pull-up;
> +};
> +
> +&qup_uart7_tx {
> +	/* We'll drive TX, so no pull */
> +	drive-strength = <2>;
> +	bias-disable;
> +};
> +
>  &qupv3_id_0 {
>  	status = "okay";
>  };
> @@ -801,12 +892,84 @@
>  &tlmm {
>  	gpio-reserved-ranges = <32 2>, /* ADSP */
>  			       <48 4>; /* NFC */
> +	bt_en: bt-en-state {
> +		pins = "gpio85";
> +		function = "gpio";
> +		output-low;
> +		bias-disable;
> +	}

Missing blank line

> +	qup_uart7_sleep: qup_uart7_sleep {
> +		qup_uart7_sleep_cts: qup-uart7-sleep-cts-state {
> +			pins = "gpio28";
> +			function = "gpio";
> +			/*
> +			 * Configure a bias-bus-hold on CTS to lower power
> +			 * usage when Bluetooth is turned off. Bus hold will
> +			 * maintain a low power state regardless of whether
> +			 * the Bluetooth module drives the pin in either
> +			 * direction or leaves the pin fully unpowered.
> +			 */
> +			bias-bus-hold;
> +		};
> +
> +		qup_uart7_sleep_rts: qup-uart7-sleep-rts-state {
> +			pins = "gpio29";
> +			function = "gpio";
> +			/*
> +			 * Configure pull-down on RTS. As RTS is active low
> +			 * signal, pull it low to indicate the BT SoC that it
> +			 * can wakeup the system anytime from suspend state by
> +			 * pulling RX low (by sending wakeup bytes).
> +			 */
> +			bias-pull-down;
> +		};
> +
> +		qup_uart7_sleep_rx: qup-uart7-sleep-rx-state {
> +			pins = "gpio31";
> +			function = "gpio";
> +			/*
> +			 * Configure a pull-up on RX. This is needed to avoid
> +			 * garbage data when the TX pin of the Bluetooth module
> +			 * is floating which may cause spurious wakeups.
> +			 */
> +			bias-pull-up;
> +		};
> +
> +		qup_uart7_sleep_tx: qup-uart7-sleep-tx-state {
> +			pins = "gpio30";
> +			function = "gpio";
> +			/*
> +			 * Configure pull-up on TX when it isn't actively driven
> +			 * to prevent BT SoC from receiving garbage during sleep.
> +			 */
> +			bias-pull-up;
> +		};
> +	};
>  };
>  
>  &uart5 {
>  	status = "okay";
>  };
>  
> +&uart7 {
> +	/delete-property/interrupts;
> +	interrupts-extended = <&intc GIC_SPI 608 IRQ_TYPE_LEVEL_HIGH>,
> +				<&tlmm 31 IRQ_TYPE_EDGE_FALLING>;
> +	pinctrl-1 = <&qup_uart7_sleep>;
> +	pinctrl-names = "default", "sleep";
> +	status = "okay";

Missing blank line


Best regards,
Krzysztof

On Wed, Dec 04, 2024 at 06:47:04PM +0530, Janaki Ramaiah Thota wrote:
> Add a node for the PMU module of the WCN6750 present on the
> qcs6490-rb3gen board and assign its power outputs to the Bluetooth
> module.
> 
> Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
>  1 file changed, 164 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> index 27695bd54220..07650648214e 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> @@ -1,6 +1,6 @@
>  // SPDX-License-Identifier: BSD-3-Clause
>  /*
> - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
>   */
>  
>  /dts-v1/;
> @@ -33,6 +33,7 @@
>  
>  	aliases {
>  		serial0 = &uart5;
> +		serial1 = &uart7;
>  	};
>  
>  	chosen {
> @@ -217,6 +218,63 @@
>  		regulator-min-microvolt = <3700000>;
>  		regulator-max-microvolt = <3700000>;
>  	};
> +
> +	wcn6750-pmu {
> +		compatible = "qcom,wcn6750-pmu";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&bt_en>;
> +		vddaon-supply = <&vreg_s7b_0p972>;
> +		vddasd-supply = <&vreg_l11c_2p8>;
> +		vddpmu-supply = <&vreg_s7b_0p972>;
> +		vddrfa0p8-supply = <&vreg_s7b_0p972>;
> +		vddrfa1p2-supply = <&vreg_s8b_1p272>;
> +		vddrfa1p7-supply = <&vreg_s1b_1p872>;
> +		vddrfa2p2-supply = <&vreg_s1c_2p19>;
> +
> +		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;

Doesn't WCN6750 also have SW_CTRL and wifi-enable pins?

> +

-- 
With best wishes
Dmitry

On 12/5/2024 4:29 AM, Dmitry Baryshkov wrote:
> On Wed, Dec 04, 2024 at 06:47:04PM +0530, Janaki Ramaiah Thota wrote:
>> Add a node for the PMU module of the WCN6750 present on the
>> qcs6490-rb3gen board and assign its power outputs to the Bluetooth
>> module.
>>
>> Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
>>   1 file changed, 164 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
>> index 27695bd54220..07650648214e 100644
>> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
>> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
>> @@ -1,6 +1,6 @@
>>   // SPDX-License-Identifier: BSD-3-Clause
>>   /*
>> - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
>> + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
>>    */
>>   
>>   /dts-v1/;
>> @@ -33,6 +33,7 @@
>>   
>>   	aliases {
>>   		serial0 = &uart5;
>> +		serial1 = &uart7;
>>   	};
>>   
>>   	chosen {
>> @@ -217,6 +218,63 @@
>>   		regulator-min-microvolt = <3700000>;
>>   		regulator-max-microvolt = <3700000>;
>>   	};
>> +
>> +	wcn6750-pmu {
>> +		compatible = "qcom,wcn6750-pmu";
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&bt_en>;
>> +		vddaon-supply = <&vreg_s7b_0p972>;
>> +		vddasd-supply = <&vreg_l11c_2p8>;
>> +		vddpmu-supply = <&vreg_s7b_0p972>;
>> +		vddrfa0p8-supply = <&vreg_s7b_0p972>;
>> +		vddrfa1p2-supply = <&vreg_s8b_1p272>;
>> +		vddrfa1p7-supply = <&vreg_s1b_1p872>;
>> +		vddrfa2p2-supply = <&vreg_s1c_2p19>;
>> +
>> +		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
> 
> Doesn't WCN6750 also have SW_CTRL and wifi-enable pins?
> 

For Bluetooth, these pins are not needed. We have verified Bluetooth 
functionality, and it is working fine.

Thanks,
Janakiram

On Fri, Dec 06, 2024 at 08:15:35PM +0530, Janaki Ramaiah Thota wrote:
> 
> 
> On 12/5/2024 4:29 AM, Dmitry Baryshkov wrote:
> > On Wed, Dec 04, 2024 at 06:47:04PM +0530, Janaki Ramaiah Thota wrote:
> > > Add a node for the PMU module of the WCN6750 present on the
> > > qcs6490-rb3gen board and assign its power outputs to the Bluetooth
> > > module.
> > > 
> > > Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
> > > ---
> > >   arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
> > >   1 file changed, 164 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > index 27695bd54220..07650648214e 100644
> > > --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > @@ -1,6 +1,6 @@
> > >   // SPDX-License-Identifier: BSD-3-Clause
> > >   /*
> > > - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> > > + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
> > >    */
> > >   /dts-v1/;
> > > @@ -33,6 +33,7 @@
> > >   	aliases {
> > >   		serial0 = &uart5;
> > > +		serial1 = &uart7;
> > >   	};
> > >   	chosen {
> > > @@ -217,6 +218,63 @@
> > >   		regulator-min-microvolt = <3700000>;
> > >   		regulator-max-microvolt = <3700000>;
> > >   	};
> > > +
> > > +	wcn6750-pmu {
> > > +		compatible = "qcom,wcn6750-pmu";
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&bt_en>;
> > > +		vddaon-supply = <&vreg_s7b_0p972>;
> > > +		vddasd-supply = <&vreg_l11c_2p8>;
> > > +		vddpmu-supply = <&vreg_s7b_0p972>;
> > > +		vddrfa0p8-supply = <&vreg_s7b_0p972>;
> > > +		vddrfa1p2-supply = <&vreg_s8b_1p272>;
> > > +		vddrfa1p7-supply = <&vreg_s1b_1p872>;
> > > +		vddrfa2p2-supply = <&vreg_s1c_2p19>;
> > > +
> > > +		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
> > 
> > Doesn't WCN6750 also have SW_CTRL and wifi-enable pins?
> > 
> 
> For Bluetooth, these pins are not needed. We have verified Bluetooth
> functionality, and it is working fine.

You are describing the hardware (PMU), not "a part of the PMU for the
BT". Please check if there should be a wifi enable pin and adjust
accordingly.

-- 
With best wishes
Dmitry

On 12/8/2024 5:35 PM, Dmitry Baryshkov wrote:
> On Fri, Dec 06, 2024 at 08:15:35PM +0530, Janaki Ramaiah Thota wrote:
>>
>>
>> On 12/5/2024 4:29 AM, Dmitry Baryshkov wrote:
>>> On Wed, Dec 04, 2024 at 06:47:04PM +0530, Janaki Ramaiah Thota wrote:
>>>> Add a node for the PMU module of the WCN6750 present on the
>>>> qcs6490-rb3gen board and assign its power outputs to the Bluetooth
>>>> module.
>>>>
>>>> Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
>>>> ---
>>>>    arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
>>>>    1 file changed, 164 insertions(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
>>>> index 27695bd54220..07650648214e 100644
>>>> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
>>>> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
>>>> @@ -1,6 +1,6 @@
>>>>    // SPDX-License-Identifier: BSD-3-Clause
>>>>    /*
>>>> - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
>>>> + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
>>>>     */
>>>>    /dts-v1/;
>>>> @@ -33,6 +33,7 @@
>>>>    	aliases {
>>>>    		serial0 = &uart5;
>>>> +		serial1 = &uart7;
>>>>    	};
>>>>    	chosen {
>>>> @@ -217,6 +218,63 @@
>>>>    		regulator-min-microvolt = <3700000>;
>>>>    		regulator-max-microvolt = <3700000>;
>>>>    	};
>>>> +
>>>> +	wcn6750-pmu {
>>>> +		compatible = "qcom,wcn6750-pmu";
>>>> +		pinctrl-names = "default";
>>>> +		pinctrl-0 = <&bt_en>;
>>>> +		vddaon-supply = <&vreg_s7b_0p972>;
>>>> +		vddasd-supply = <&vreg_l11c_2p8>;
>>>> +		vddpmu-supply = <&vreg_s7b_0p972>;
>>>> +		vddrfa0p8-supply = <&vreg_s7b_0p972>;
>>>> +		vddrfa1p2-supply = <&vreg_s8b_1p272>;
>>>> +		vddrfa1p7-supply = <&vreg_s1b_1p872>;
>>>> +		vddrfa2p2-supply = <&vreg_s1c_2p19>;
>>>> +
>>>> +		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
>>>
>>> Doesn't WCN6750 also have SW_CTRL and wifi-enable pins?
>>>
>>
>> For Bluetooth, these pins are not needed. We have verified Bluetooth
>> functionality, and it is working fine.
> 
> You are describing the hardware (PMU), not "a part of the PMU for the
> BT". Please check if there should be a wifi enable pin and adjust
> accordingly.
> 

We further checked with WiFi team. For wcn6750, sw_ctrl and wifi-enable 
pins handled from WiFi firmware/controller. So it is not needed to 
handle in PMU.

Thanks,
Janakiram

On Sun, Dec 08, 2024 at 09:42:21PM +0530, Janaki Ramaiah Thota wrote:
> 
> 
> On 12/8/2024 5:35 PM, Dmitry Baryshkov wrote:
> > On Fri, Dec 06, 2024 at 08:15:35PM +0530, Janaki Ramaiah Thota wrote:
> > > 
> > > 
> > > On 12/5/2024 4:29 AM, Dmitry Baryshkov wrote:
> > > > On Wed, Dec 04, 2024 at 06:47:04PM +0530, Janaki Ramaiah Thota wrote:
> > > > > Add a node for the PMU module of the WCN6750 present on the
> > > > > qcs6490-rb3gen board and assign its power outputs to the Bluetooth
> > > > > module.
> > > > > 
> > > > > Signed-off-by: Janaki Ramaiah Thota <quic_janathot@quicinc.com>
> > > > > ---
> > > > >    arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 165 ++++++++++++++++++-
> > > > >    1 file changed, 164 insertions(+), 1 deletion(-)
> > > > > 
> > > > > diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > > > index 27695bd54220..07650648214e 100644
> > > > > --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > > > +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > > > @@ -1,6 +1,6 @@
> > > > >    // SPDX-License-Identifier: BSD-3-Clause
> > > > >    /*
> > > > > - * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> > > > > + * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
> > > > >     */
> > > > >    /dts-v1/;
> > > > > @@ -33,6 +33,7 @@
> > > > >    	aliases {
> > > > >    		serial0 = &uart5;
> > > > > +		serial1 = &uart7;
> > > > >    	};
> > > > >    	chosen {
> > > > > @@ -217,6 +218,63 @@
> > > > >    		regulator-min-microvolt = <3700000>;
> > > > >    		regulator-max-microvolt = <3700000>;
> > > > >    	};
> > > > > +
> > > > > +	wcn6750-pmu {
> > > > > +		compatible = "qcom,wcn6750-pmu";
> > > > > +		pinctrl-names = "default";
> > > > > +		pinctrl-0 = <&bt_en>;
> > > > > +		vddaon-supply = <&vreg_s7b_0p972>;
> > > > > +		vddasd-supply = <&vreg_l11c_2p8>;
> > > > > +		vddpmu-supply = <&vreg_s7b_0p972>;
> > > > > +		vddrfa0p8-supply = <&vreg_s7b_0p972>;
> > > > > +		vddrfa1p2-supply = <&vreg_s8b_1p272>;
> > > > > +		vddrfa1p7-supply = <&vreg_s1b_1p872>;
> > > > > +		vddrfa2p2-supply = <&vreg_s1c_2p19>;
> > > > > +
> > > > > +		bt-enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
> > > > 
> > > > Doesn't WCN6750 also have SW_CTRL and wifi-enable pins?
> > > > 
> > > 
> > > For Bluetooth, these pins are not needed. We have verified Bluetooth
> > > functionality, and it is working fine.
> > 
> > You are describing the hardware (PMU), not "a part of the PMU for the
> > BT". Please check if there should be a wifi enable pin and adjust
> > accordingly.
> > 
> 
> We further checked with WiFi team. For wcn6750, sw_ctrl and wifi-enable pins
> handled from WiFi firmware/controller. So it is not needed to handle in PMU.

Please mention that in the commit message and add a brief comment in the
PMU node.

-- 
With best wishes
Dmitry