linux-kernel - [PATCH v3 02/11] arm64: dts: qcom: sdm845-lg-common: Add uarts and Bluetooth

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Message-Id: <20250928-judyln-dts-v3-2-b14cf9e9a928@postmarketos.org>
Date: Sun, 28 Sep 2025 22:05:25 -0700
From: Paul Sajna <sajattack@...tmarketos.org>
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>, David Heidelberg <david@...t.cz>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org, 
 Amir Dahan <system64fumo@...tonmail.com>, 
 Christopher Brown <crispybrown@...il.com>, 
 Paul Sajna <sajattack@...tmarketos.org>
Subject: [PATCH v3 02/11] arm64: dts: qcom: sdm845-lg-common: Add uarts and
 Bluetooth

uart9 is debug serial on USB SBU1/2

UART RX is SBU1 and UART TX is SBU2 of the USB-C port).
1.8V Logic Level
Tested using pololu usb07a https://www.pololu.com/product/2585
and CH340 USB-UART

uart6 is bluetooth

Add bluetooth firmware path

Signed-off-by: Paul Sajna <sajattack@...tmarketos.org>
---
 arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi | 45 ++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts  |  8 +++++
 2 files changed, 53 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
index 82d6543835324ed92300c4ed24c51f4b79321f99..4c631df56f262ba9e730f6720abd94d374b14692 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
@@ -27,10 +27,17 @@
 /delete-node/ &wlan_msa_mem;
 
 / {
+	aliases {
+		serial0 = &uart9;
+		serial1 = &uart6;
+	};
+
 	chosen {
 		#address-cells = <2>;
 		#size-cells = <2>;
 		ranges;
+
+		stdout-path = "serial0:115200n8";
 	};
 
 	reserved-memory {
@@ -595,3 +602,41 @@ &usb_1_qmpphy {
 
 	status = "okay";
 };
+
+&qupv3_id_0 {
+	status = "okay";
+};
+
+&qupv3_id_1 {
+	status = "okay";
+};
+
+&qup_uart9_rx {
+	drive-strength = <2>;
+	bias-pull-up;
+};
+
+&qup_uart9_tx {
+	drive-strength = <2>;
+	bias-disable;
+};
+
+&uart6 {
+	pinctrl-0 = <&qup_uart6_4pin>;
+
+	status = "okay";
+
+	bluetooth: bluetooth {
+		compatible = "qcom,wcn3990-bt";
+
+		vddio-supply = <&vreg_s4a_1p8>;
+		vddxo-supply = <&vreg_l7a_1p8>;
+		vddrf-supply = <&vreg_l17a_1p3>;
+		vddch0-supply = <&vreg_l25a_3p3>;
+		max-speed = <3200000>;
+	};
+};
+
+&uart9 {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
index a12723310c8b630a4961de671ea8b60f1f8b512b..f91578ce7195dc3bfd1ba0a722fb48f950816246 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
@@ -66,3 +66,11 @@ thinq_key_default: thinq-key-default-state {
 		bias-pull-up;
 	};
 };
+
+&bluetooth {
+		/*
+		 * This path is relative to the qca/
+		 * subdir under lib/firmware.
+		 */
+		firmware-name = "judyln/crnv21.bin";
+};

-- 
2.51.0