[1/2] ARM: dts: hummingboard2: describe optional rs485
diff mbox

Message ID 8c90900a5d7538d26ec93287ca4787c1dd97fbce.1531798683.git.baruch@tkos.co.il
State New, archived
Headers show

Commit Message

Baruch Siach July 17, 2018, 3:38 a.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(+)

Comments

Shawn Guo July 19, 2018, 2:26 a.m. UTC | #1
On Tue, Jul 17, 2018 at 06:38:02AM +0300, Baruch Siach wrote:
> 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>

Russell,

Are you okay with these two patches?

Shawn

Patch
diff mbox

diff --git a/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi b/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
index c413f9c3540f..576437936a60 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
@@ -565,6 +573,14 @@ 
 	status = "okay";
 };
 
+/* Optional RS-485 transceiver */
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hummingboard2_uart2>;
+	uart-has-rtscts;
+	status = "disabled";
+};
+
 &uart3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_hummingboard2_uart3>;