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[3/4] ARM: dts: hummingboard2: describe optional rs485

Message ID 926d03329f04ff0c7c8d58e29c6d673a3d95fae9.1548861664.git.baruch@tkos.co.il (mailing list archive)
State New, archived
Headers show
Series ARM: dts: hummingboard2: fixes and improvements | expand

Commit Message

Baruch Siach Jan. 30, 2019, 4:18 p.m. UTC 
A Hummingboard assembly option provides RS-485 transceiver on UART2
(/dev/ttymxc1). Add DT node for that. Keep it disabled, since RS-485 is
not assembled by default.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
---
 arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi b/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
index fe95fe27e6ef..c5b5c6d3306f 100644
--- a/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
@@ -501,6 +501,14 @@ 
 			>;
 		};
 
+		pinctrl_hummingboard2_uart2: hummingboard2-uart2 {
+			fsl,pins = <
+				MX6QDL_PAD_SD4_DAT4__UART2_RX_DATA	0x1b0b1
+				MX6QDL_PAD_SD4_DAT7__UART2_TX_DATA	0x1b0b1
+				MX6QDL_PAD_SD4_DAT6__UART2_CTS_B	0x1b0b1
+			>;
+		};
+
 		pinctrl_hummingboard2_uart3: hummingboard2-uart3 {
 			fsl,pins = <
 				MX6QDL_PAD_EIM_D25__UART3_TX_DATA	0x1b0b1
@@ -573,6 +581,14 @@ 
 	status = "okay";
 };
 
+/* Optional RS-485 transceiver */
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hummingboard2_uart2>;
+	uart-has-rtscts;
+	status = "disabled";
+};
+
 &uart3 {
 	pinctrl-names = "default";
 	/* Use &pinctrl_hummingboard2_rev14_uart3 for HB2 rev 1.4 */