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Message-Id: <20180328095133.14343-2-thierry.escande@linaro.org>
Date: Wed, 28 Mar 2018 11:51:31 +0200
From: Thierry Escande <thierry.escande@...aro.org>
To: Rob Herring <robh+dt@...nel.org>,
Andy Gross <andy.gross@...aro.org>,
Marcel Holtmann <marcel@...tmann.org>,
Johan Hedberg <johan.hedberg@...il.com>,
David Brown <david.brown@...aro.org>,
Mark Rutland <mark.rutland@....com>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Loic Poulain <loic.poulain@...aro.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
linux-bluetooth@...r.kernel.org, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v6 1/3] arm64: dts: apq8096-db820c: enable bluetooth node
Add a new serial node for the Qualcomm BT controller QCA6174. This
allows automatic probing and hci registration through the serdev
framework instead of relying on the userspace helpers.
Signed-off-by: Thierry Escande <thierry.escande@...aro.org>
---
v6
- Move gpio properties into pinconf subnode
- move pinmux properties into mux and config subnodes
v5:
- Rename 'bt-disable-n' gpio as 'enable'
v4: no change
v3: no change
v2:
- Fix author email
arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi | 26 +++++++++++++++++
.../boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi | 21 ++++++++++++++
arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 33 ++++++++++++++++++++++
arch/arm64/boot/dts/qcom/msm8996.dtsi | 10 +++++++
4 files changed, 90 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi
index 24552f19b3fa..6a573875d45a 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi
@@ -36,4 +36,30 @@
drive-strength = <2>; /* 2 MA */
};
};
+
+ blsp1_uart1_default: blsp1_uart1_default {
+ mux {
+ pins = "gpio41", "gpio42", "gpio43", "gpio44";
+ function = "blsp_uart2";
+ };
+
+ config {
+ pins = "gpio41", "gpio42", "gpio43", "gpio44";
+ drive-strength = <16>;
+ bias-disable;
+ };
+ };
+
+ blsp1_uart1_sleep: blsp1_uart1_sleep {
+ mux {
+ pins = "gpio41", "gpio42", "gpio43", "gpio44";
+ function = "gpio";
+ };
+
+ config {
+ pins = "gpio41", "gpio42", "gpio43", "gpio44";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
};
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi
index 59b29ddfb6e9..0a8cf7e5974f 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi
@@ -26,6 +26,27 @@
};
};
+ divclk4_pin_a: divclk4 {
+ pinconf {
+ pins = "gpio18";
+ function = PMIC_GPIO_FUNC_FUNC2;
+
+ bias-disable;
+ power-source = <PM8994_GPIO_S4>;
+ };
+ };
+
+ bt_en_pin_a: bt-en-active {
+ pinconf {
+ pins = "gpio19";
+ function = PMIC_GPIO_FUNC_NORMAL;
+
+ output-low;
+ power-source = <PM8994_GPIO_S4>; // 1.8V
+ qcom,drive-strength = <PMIC_GPIO_STRENGTH_LOW>;
+ };
+ };
+
usb3_vbus_det_gpio: pm8996_gpio22 {
pinconf {
pins = "gpio22";
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
index 1c8f1b86472d..8b3bcdf0d718 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
@@ -23,6 +23,7 @@
aliases {
serial0 = &blsp2_uart1;
serial1 = &blsp2_uart2;
+ serial2 = &blsp1_uart1;
i2c0 = &blsp1_i2c2;
i2c1 = &blsp2_i2c1;
i2c2 = &blsp2_i2c0;
@@ -34,7 +35,39 @@
stdout-path = "serial0:115200n8";
};
+ clocks {
+ divclk4: divclk4 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ clock-output-names = "divclk4";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&divclk4_pin_a>;
+ };
+ };
+
soc {
+ serial@...0000 {
+ label = "BT-UART";
+ status = "okay";
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&blsp1_uart1_default>;
+ pinctrl-1 = <&blsp1_uart1_sleep>;
+
+ bluetooth {
+ compatible = "qcom,qca6174-bt";
+
+ /* bt_disable_n gpio */
+ enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&bt_en_pin_a>;
+
+ clocks = <&divclk4>;
+ };
+ };
+
serial@...0000 {
label = "LS-UART1";
status = "okay";
diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 0a6f7952bbb1..2d54a86a027f 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -408,6 +408,16 @@
#clock-cells = <1>;
};
+ blsp1_uart1: serial@...0000 {
+ compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
+ reg = <0x07570000 0x1000>;
+ interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>,
+ <&gcc GCC_BLSP1_AHB_CLK>;
+ clock-names = "core", "iface";
+ status = "disabled";
+ };
+
blsp1_spi0: spi@...5000 {
compatible = "qcom,spi-qup-v2.2.1";
reg = <0x07575000 0x600>;
--
2.14.1
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