From: Janaki Ramaiah Thota Date: Tue, 3 Feb 2026 07:18:07 +0000 (+0530) Subject: arm64: dts: qcom: qcm6490-idp: add and enable BT node X-Git-Tag: v7.1-rc1~125^2~14^2~215 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af2385d532c3457e08e8431f27d5771d7a686ef5;p=thirdparty%2Flinux.git arm64: dts: qcom: qcm6490-idp: add and enable BT node Add the PMU node for WCN6750 present on the qcm6490-idp board and assign its power outputs to the Bluetooth module. In WCN6750 module sw_ctrl and wifi-enable pins are handled in the wifi controller firmware. Therefore, it is not required to have those pins' entries in the PMU node. Signed-off-by: Janaki Ramaiah Thota Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20260203071807.764036-1-janaki.thota@oss.qualcomm.com Signed-off-by: Bjorn Andersson --- diff --git a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts index 089a027c57d5c..4c9f16cc2e4dd 100644 --- a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts +++ b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts @@ -36,6 +36,7 @@ aliases { serial0 = &uart5; + serial1 = &uart7; }; pm8350c_pwm_backlight: backlight { @@ -194,6 +195,63 @@ #sound-dai-cells = <1>; }; + + wcn6750-pmu { + compatible = "qcom,wcn6750-pmu"; + pinctrl-0 = <&bt_en>; + pinctrl-names = "default"; + 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 { @@ -695,6 +753,39 @@ 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"; }; @@ -920,6 +1011,59 @@ 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_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; + }; + sd_cd: sd-cd-state { pins = "gpio91"; function = "gpio"; @@ -938,6 +1082,31 @@ 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_cts>, + <&qup_uart7_sleep_rts>, + <&qup_uart7_sleep_tx>, + <&qup_uart7_sleep_rx>; + 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>; + }; +}; + &ufs_mem_hc { reset-gpios = <&tlmm 175 GPIO_ACTIVE_LOW>; vcc-supply = <&vreg_l7b_2p952>;