[2/2] ARM: dts: pandaboard es: add bluetooth uart for HCI

Commit Message

H. Nikolaus Schaller Oct. 3, 2020, 2:10 p.m. UTC

The wl271 bluetooth uart is connected to uart2.
Setup a serdev uart child and separate bluetooth and uart2 pinmux
from wl12xx pinmux to better group the pins and muxes.

Signed-off-by: H. Nikolaus Schaller <[e-mail]>
---
 arch/arm/boot/dts/omap4-panda-es.dts | 32 ++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

Patch

diff --git a/arch/arm/boot/dts/omap4-panda-es.dts b/arch/arm/boot/dts/omap4-panda-es.dts
index 6afa8fd7c412de..7c6886cd738f03 100644
--- a/arch/arm/boot/dts/omap4-panda-es.dts
+++ b/arch/arm/boot/dts/omap4-panda-es.dts
@@ -49,6 +49,22 @@  button_pins: pinmux_button_pins {
 			OMAP4_IOPAD(0x0fc, PIN_INPUT_PULLUP | MUX_MODE3) /* gpio_113 */
 		>;
 	};
+
+	bt_pins: pinmux_bt_pins {
+		pinctrl-single,pins = <
+			OMAP4_IOPAD(0x06c, PIN_OUTPUT | MUX_MODE3)		/* gpmc_a22.gpio_46 - BTEN */
+			OMAP4_IOPAD(0x072, PIN_OUTPUT_PULLUP | MUX_MODE3)	/* gpmc_a25.gpio_49 - BTWAKEUP */
+		>;
+	};
+
+	uart2_pins: pinmux_uart2_pins {
+		pinctrl-single,pins = <
+			OMAP4_IOPAD(0x118, PIN_INPUT_PULLUP | MUX_MODE0)	/* uart2_cts.uart2_cts - HCI */
+			OMAP4_IOPAD(0x11a, PIN_OUTPUT | MUX_MODE0)		/* uart2_rts.uart2_rts */
+			OMAP4_IOPAD(0x11c, PIN_INPUT_PULLUP | MUX_MODE0)	/* uart2_rx.uart2_rx */
+			OMAP4_IOPAD(0x11e, PIN_OUTPUT | MUX_MODE0)		/* uart2_tx.uart2_tx */
+		>;
+	};
 };
 
 &led_wkgpio_pins {
@@ -80,3 +96,19 @@  buttonS2 {
 &gpio1_target {
 	 ti,no-reset-on-init;
 };
+
+&wl12xx_gpio {
+	pinctrl-single,pins = <
+		OMAP4_IOPAD(0x066, PIN_OUTPUT | MUX_MODE3)		/* gpmc_a19.gpio_43 */
+		OMAP4_IOPAD(0x070, PIN_OUTPUT_PULLUP | MUX_MODE3)	/* gpmc_a24.gpio_48 */
+	>;
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_pins &bt_pins>;
+	bluetooth: tiwi {
+		compatible = "ti,wl1271-st";
+		enable-gpios = <&gpio2 14 GPIO_ACTIVE_HIGH>;	/* GPIO_46 */
+	};
+};