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Message-ID: <20241009111436.23473-1-quic_janathot@quicinc.com>
Date: Wed, 9 Oct 2024 16:44:36 +0530
From: Janaki Ramaiah Thota <quic_janathot@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio
<konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski
<krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
CC: <quic_mohamull@...cinc.com>, <quic_hbandi@...cinc.com>,
<linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v1] arm64: dts: qcom: qcm6490-rb3gen2: enable Bluetooth
Add Bluetooth and UART7 support for qcs6490-rb3gen2.
Signed-off-by: Janaki Ramaiah Thota <quic_janathot@...cinc.com>
---
arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 120 +++++++++++++++++++
1 file changed, 120 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index 0d45662b8028..a5da7657e47e 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -32,6 +32,8 @@
aliases {
serial0 = &uart5;
+ bluetooth0 = &bluetooth;
+ serial1 = &uart7;
};
chosen {
@@ -688,6 +690,39 @@
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";
};
@@ -719,12 +754,97 @@
&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_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;
+ };
+
+ sw_ctrl: sw-ctrl-state {
+ pins = "gpio86";
+ function = "gpio";
+ bias-pull-down;
+ };
};
&uart5 {
status = "okay";
};
+&uart7 {
+ status = "okay";
+ /delete-property/interrupts;
+ interrupts-extended = <&intc GIC_SPI 608 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 31 IRQ_TYPE_EDGE_FALLING>;
+ pinctrl-names = "default", "sleep";
+ pinctrl-1 = <&qup_uart7_sleep_cts>, <&qup_uart7_sleep_rts>,
+ <&qup_uart7_sleep_tx>, <&qup_uart7_sleep_rx>;
+
+ bluetooth: bluetooth {
+ compatible = "qcom,wcn6750-bt";
+ pinctrl-names = "default";
+ pinctrl-0 = <&bt_en>, <&sw_ctrl>;
+ enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
+ swctrl-gpios = <&tlmm 86 GPIO_ACTIVE_HIGH>;
+ vddaon-supply = <&vreg_s7b_0p972>;
+ vddbtcxmx-supply = <&vreg_s7b_0p972>;
+ vddrfacmn-supply = <&vreg_s7b_0p972>;
+ vddrfa0p8-supply = <&vreg_s7b_0p972>;
+ vddrfa1p7-supply = <&vreg_s1b_1p872>;
+ vddrfa1p2-supply = <&vreg_s8b_1p272>;
+ vddrfa2p2-supply = <&vreg_s1c_2p19>;
+ vddasd-supply = <&vreg_l11c_2p8>;
+ max-speed = <3200000>;
+ };
+};
+
&usb_1 {
status = "okay";
};
--
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