Commit c4ef464b authored by Luca Weiss's avatar Luca Weiss Committed by Bjorn Andersson
Browse files

arm64: dts: qcom: sm7225-fairphone-fp4: Add Bluetooth 



The device has a WCN3988 chip for WiFi and Bluetooth. Configure the
Bluetooth node and enable the UART it is connected to, plus the
necessary pinctrl that has been borrowed with comments from
sc7280-idp.dtsi.

Signed-off-by: default avatarLuca Weiss <luca.weiss@fairphone.com>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230421-fp4-bluetooth-v2-4-3de840d5483e@fairphone.com
parent b179f35b

arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts

+103 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 


	aliases {

		serial0 = &uart9;

		serial1 = &uart1;

	};



	chosen {
@@ -524,6 +525,39 @@ 
	};

};



&qup_uart1_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_uart1_rts {

	/* We'll drive RTS, so no pull */

	drive-strength = <2>;

	bias-disable;

};



&qup_uart1_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_uart1_tx {

	/* We'll drive TX, so no pull */

	drive-strength = <2>;

	bias-disable;

};



&qupv3_id_0 {

	status = "okay";

};
@@ -561,6 +595,75 @@ 


&tlmm {

	gpio-reserved-ranges = <13 4>, <56 2>;



	qup_uart1_sleep_cts: qup-uart1-sleep-cts-state {

		pins = "gpio61";

		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_uart1_sleep_rts: qup-uart1-sleep-rts-state {

		pins = "gpio62";

		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_uart1_sleep_rx: qup-uart1-sleep-rx-state {

		pins = "gpio64";

		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_uart1_sleep_tx: qup-uart1-sleep-tx-state {

		pins = "gpio63";

		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;

	};

};



&uart1 {

	/delete-property/ interrupts;

	interrupts-extended = <&intc GIC_SPI 602 IRQ_TYPE_LEVEL_HIGH>,

			      <&tlmm 64 IRQ_TYPE_EDGE_FALLING>;



	pinctrl-names = "default", "sleep";

	pinctrl-1 = <&qup_uart1_sleep_cts>, <&qup_uart1_sleep_rts>, <&qup_uart1_sleep_tx>, <&qup_uart1_sleep_rx>;



	status = "okay";



	bluetooth {

		compatible = "qcom,wcn3988-bt";



		vddio-supply = <&vreg_l11a>;

		vddxo-supply = <&vreg_l7a>;

		vddrf-supply = <&vreg_l2e>;

		vddch0-supply = <&vreg_l10e>;

		swctrl-gpios = <&tlmm 69 GPIO_ACTIVE_HIGH>;



		max-speed = <3200000>;

	};

};



&uart9 {