Hi All,
On 1/31/2025 4:33 PM, Janaki Ramaiah Thota wrote:
Add the PMU node for WCN6750 present on the qcs6490-rb3gen
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 <quic_janathot@xxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 167 ++++++++++++++++++-
1 file changed, 166 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/
boot/dts/qcom/qcs6490-rb3gen2.dts
index 7a36c90ad4ec..0a3243499dfb 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/;
@@ -34,6 +34,7 @@ / {
aliases {
serial0 = &uart5;
+ serial1 = &uart7;
};
chosen {
@@ -218,6 +219,63 @@ vph_pwr: vph-pwr-regulator {
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 {
@@ -799,6 +857,39 @@ &pon_resin {
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";
};
@@ -842,12 +933,86 @@ &sdhc_2 {
&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;
+ };
};
&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_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>;
+ };
+};
+
&usb_1 {
status = "okay";
};
Could you please help to review this change? Thanks!
Regards,
Janakiram
