From: Stephan Gerhold <stephan@gerhold.net>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Stephan Gerhold <stephan@gerhold.net>
Subject: [PATCH 8/9] ARM: dts: ux500: samsung-golden: Add Bluetooth
Date: Thu, 19 Dec 2019 21:20:51 +0100 [thread overview]
Message-ID: <20191219202052.19039-9-stephan@gerhold.net> (raw)
In-Reply-To: <20191219202052.19039-1-stephan@gerhold.net>
samsung-golden uses a BCM4334 WiFi+BT combo chip.
The BT part is connected via UART and supported by the hci_bcm
driver in mainline.
Add the necessary device tree changes to make it load correctly.
It requires (seemingly) device-specific firmware that can be
extracted from the stock Android system used on samsung-golden:
- /system/bin/bcm4334.hcd -> /lib/firmware/brcm/BCM4334B0.hcd
On my device, scanning for other Bluetooth devices works just fine,
but for some reason it keeps disconnecting immediately
when attempting to connect to an other device.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
.../arm/boot/dts/ste-ux500-samsung-golden.dts | 27 +++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm/boot/dts/ste-ux500-samsung-golden.dts b/arch/arm/boot/dts/ste-ux500-samsung-golden.dts
index d22b2879c46a..313f0ab16866 100644
--- a/arch/arm/boot/dts/ste-ux500-samsung-golden.dts
+++ b/arch/arm/boot/dts/ste-ux500-samsung-golden.dts
@@ -113,6 +113,19 @@ uart@80120000 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&u0_a_1_default>;
pinctrl-1 = <&u0_a_1_sleep>;
+
+ bluetooth {
+ compatible = "brcm,bcm4330-bt";
+ /* GPIO222 (BT_VREG_ON) */
+ shutdown-gpios = <&gpio6 30 GPIO_ACTIVE_HIGH>;
+ /* GPIO199 (BT_WAKE) */
+ device-wakeup-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
+ /* GPIO97 (BT_HOST_WAKE) */
+ host-wakeup-gpios = <&gpio3 1 GPIO_ACTIVE_HIGH>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&bluetooth_default>;
+ };
};
/* GPF UART */
@@ -396,6 +409,20 @@ golden_cfg1 {
};
};
+ bluetooth {
+ bluetooth_default: bluetooth_default {
+ golden_cfg1 {
+ pins = "GPIO199_AH23", /* BT_WAKE */
+ "GPIO222_AJ9"; /* BT_VREG_ON */
+ ste,config = <&gpio_out_lo>;
+ };
+ golden_cfg2 {
+ pins = "GPIO97_D9"; /* BT_HOST_WAKE */
+ ste,config = <&gpio_in_nopull>;
+ };
+ };
+ };
+
vibrator {
vibrator_default: vibrator_default {
golden_cfg1 {
--
2.24.1
next prev parent reply other threads:[~2019-12-19 20:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-19 20:20 [PATCH 0/9] Add device tree for Samsung Galaxy S III mini (GT-I8190) Stephan Gerhold
2019-12-19 20:20 ` [PATCH 1/9] ARM: dts: ux500: Remove unused ste-href-ab8505.dtsi Stephan Gerhold
2019-12-19 20:20 ` [PATCH 2/9] ARM: dts: ux500: Add device tree include for AB8505 Stephan Gerhold
2019-12-19 20:20 ` [PATCH 3/9] dt-bindings: arm: ux500: Document samsung,golden compatible Stephan Gerhold
2019-12-19 20:20 ` [PATCH 4/9] ARM: dts: ux500: Add device tree for Samsung Galaxy S III mini (GT-I8190) Stephan Gerhold
2019-12-19 20:20 ` [PATCH 5/9] ARM: dts: ux500: samsung-golden: Add IMU (accelerometer + gyroscope) Stephan Gerhold
2019-12-19 20:20 ` [PATCH 6/9] ARM: dts: ux500: samsung-golden: Add touch screen Stephan Gerhold
2019-12-19 20:20 ` [PATCH 7/9] ARM: dts: ux500: samsung-golden: Add WiFi Stephan Gerhold
2019-12-19 20:20 ` Stephan Gerhold [this message]
2019-12-19 20:20 ` [PATCH 9/9] ARM: defconfig: u8500: Enable new drivers for samsung-golden Stephan Gerhold
2019-12-25 23:21 ` [PATCH 0/9] Add device tree for Samsung Galaxy S III mini (GT-I8190) Linus Walleij
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