ARM: dts: stm32: Enable Bluetooth on AV96

The WiFi/Bluetooth chip is attached to USART2 on AV96 as well, describe
it in DT to make it available. Remove BT LED and turn it into a shutdown
GPIO, because the GPIO line controls the BT_REG_ON signal. The LED is just
an indicator connected to the same line, but not the primary function.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

diff --git a/arch/arm/boot/dts/stm32mp157a-avenger96.dts b/arch/arm/boot/dts/stm32mp157a-avenger96.dts
index 310329a..ebf34ae 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157a-avenger96.dts
+++ b/arch/arm/boot/dts/stm32mp157a-avenger96.dts
@@ -21,6 +21,7 @@
                mmc0 = &sdmmc1;
                serial0 = &uart4;
                serial1 = &uart7;
+               serial2 = &usart2;
                spi0 = &qspi;
        };
 
@@ -63,13 +64,6 @@
                        default-state = "off";
                        panic-indicator;
                };
-
-               led5 {
-                       label = "blue:bt";
-                       gpios = <&gpioz 6 GPIO_ACTIVE_HIGH>;
-                       linux,default-trigger = "bluetooth-power";
-                       default-state = "off";
-               };
        };
 
        sd_switch: regulator-sd_switch {
@@ -419,3 +413,18 @@
        pinctrl-0 = <&uart7_pins_a>;
        status = "okay";
 };
+
+/* Bluetooth */
+&usart2 {
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&usart2_pins_a>;
+       pinctrl-1 = <&usart2_sleep_pins_a>;
+       st,hw-flow-ctrl;
+       status = "okay";
+
+       bluetooth {
+               compatible = "brcm,bcm43438-bt";
+               max-speed = <3000000>;
+               shutdown-gpios = <&gpioz 6 GPIO_ACTIVE_HIGH>;
+       };
+};