Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7;
From:   Konrad Dybcio <konrad.dybcio@linaro.org>
Date:   Sat, 25 Nov 2023 14:04:42 +0100
Subject: [PATCH 2/2] arm64: dts: qcom: qrb4210-rb2: Enable bluetooth
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20231120-topic-rb2_bt-v1-2-509db2e28e70@linaro.org>
References: <20231120-topic-rb2_bt-v1-0-509db2e28e70@linaro.org>
In-Reply-To: <20231120-topic-rb2_bt-v1-0-509db2e28e70@linaro.org>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>
Cc:     Marijn Suijten <marijn.suijten@somainline.org>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Konrad Dybcio <konrad.dybcio@linaro.org>
Precedence: bulk

Enable the QCA bluetooth on RB2. It identifies like the following:

Bluetooth: hci0: QCA Product ID   :0x0000000a
Bluetooth: hci0: QCA SOC Version  :0x40020150
Bluetooth: hci0: QCA ROM Version  :0x00000201
Bluetooth: hci0: QCA Patch Version:0x00000001
Bluetooth: hci0: QCA controller version 0x01500201

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 81 +++++++++++++++++++++++++++++++-
 1 file changed, 80 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
index 9738c0dacd58..bd751236f983 100644
--- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
+++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
@@ -15,6 +15,7 @@ / {
 
 	aliases {
 		serial0 = &uart4;
+		serial1 = &uart3;
 	};
 
 	chosen {
@@ -352,7 +353,8 @@ vreg_l8a_0p664: l8 {
 
 		vreg_l9a_1p8: l9 {
 			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <2000000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-allow-set-load;
 		};
 
 		vreg_l10a_1p8: l10 {
@@ -389,11 +391,13 @@ vreg_l15a_3p128: l15 {
 		vreg_l16a_1p3: l16 {
 			regulator-min-microvolt = <1704000>;
 			regulator-max-microvolt = <1904000>;
+			regulator-allow-set-load;
 		};
 
 		vreg_l17a_1p3: l17 {
 			regulator-min-microvolt = <1152000>;
 			regulator-max-microvolt = <1384000>;
+			regulator-allow-set-load;
 		};
 
 		vreg_l18a_1p232: l18 {
@@ -426,6 +430,7 @@ vreg_l22a_2p96: l22 {
 		vreg_l23a_3p3: l23 {
 			regulator-min-microvolt = <3200000>;
 			regulator-max-microvolt = <3400000>;
+			regulator-allow-set-load;
 		};
 
 		vreg_l24a_2p96: l24 {
@@ -487,6 +492,60 @@ &tlmm {
 			       <56 3>, <61 2>, <64 1>,
 			       <68 1>, <72 8>, <96 1>;
 
+	uart3_default: uart3-default-state {
+		cts-pins {
+			pins = "gpio8";
+			function = "qup3";
+			bias-bus-hold;
+		};
+
+		rts-pins {
+			pins = "gpio9";
+			function = "qup3";
+			drive-strength = <2>;
+			bias-disable;
+		};
+
+		tx-pins {
+			pins = "gpio10";
+			function = "qup3";
+			drive-strength = <2>;
+			bias-disable;
+		};
+
+		rx-pins {
+			pins = "gpio11";
+			function = "qup3";
+			bias-pull-up;
+		};
+	};
+
+	uart3_sleep: uart3-sleep-state {
+		cts-pins {
+			pins = "gpio8";
+			function = "gpio";
+			bias-bus-hold;
+		};
+
+		rts-pins {
+			pins = "gpio9";
+			function = "gpio";
+			bias-pull-down;
+		};
+
+		tx-pins {
+			pins = "gpio10";
+			function = "gpio";
+			bias-pull-up;
+		};
+
+		rx-pins {
+			pins = "gpio11";
+			function = "gpio";
+			bias-pull-up;
+		};
+	};
+
 	lt9611_rst_pin: lt9611-rst-state {
 		pins = "gpio41";
 		function = "gpio";
@@ -508,6 +567,26 @@ sdc2_card_det_n: sd-card-det-n-state {
 	};
 };
 
+&uart3 {
+	interrupts-extended = <&intc GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>,
+			      <&tlmm 11 IRQ_TYPE_LEVEL_HIGH>;
+	pinctrl-0 = <&uart3_default>;
+	pinctrl-1 = <&uart3_sleep>;
+	pinctrl-names = "default", "sleep";
+	status = "okay";
+
+	bluetooth {
+		compatible = "qcom,wcn3988-bt";
+
+		vddio-supply = <&vreg_l9a_1p8>;
+		vddxo-supply = <&vreg_l16a_1p3>;
+		vddrf-supply = <&vreg_l17a_1p3>;
+		vddch0-supply = <&vreg_l23a_3p3>;
+		enable-gpios = <&tlmm 87 GPIO_ACTIVE_HIGH>;
+		max-speed = <3200000>;
+	};
+};
+
 &uart4 {
 	status = "okay";
 };

-- 
2.43.0