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ARM: dts: hummingboard2: describe optional rs485

PATCH New Baruch Siach 2 participants 3 messages Jul 17, 2018 – Jul 19, 2018

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Baruch Siach

author
#0 lore raw

PATCH 1/2 ARM: dts: hummingboard2: describe optional rs485

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 <[email protected]>
---
 arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi +16 -0
index c413f9c3540f..576437936a60 100644
@@ -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>;
Signature · 1 line
2.18.0
author
#1 lore raw

PATCH 2/2 ARM: dts: hummingboard2: describe optional can bus

A Hummingboard assembly option provides CAN bus connector for the i.MX6 provided FlexCAN peripheral. Keep disabled by default.

Note the conflict with HDMI pin mux.

Signed-off-by Baruch Siach <[email protected]>
---
 arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi +15 -0
index 576437936a60..8b32a7abf2da 100644
@@ -206,6 +206,7 @@
 	status = "okay";
 };
 
+/* Conflicts with the CAN bus option */
 &hdmi {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_hummingboard2_hdmi>;

@@ -515,6 +516,13 @@
 				MX6QDL_PAD_EIM_D24__UART3_RX_DATA	0x40013000
 			>;
 		};
+
+		pinctrl_hummingboard2_flexcan1: hummingboard2-flexcan1 {
+			fsl,pins = <
+				MX6QDL_PAD_KEY_ROW2__FLEXCAN1_RX	0x1b0b1
+				MX6QDL_PAD_KEY_COL2__FLEXCAN1_TX	0x1b0b1
+			>;
+		};
 	};
 };
 

@@ -587,6 +595,13 @@
 	status = "okay";
 };
 
+/* Optional CAN bus. Conflicts with HDMI CEC. */
+&can1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hummingboard2_flexcan1>;
+	status = "disabled";
+};
+
 &vcc_3v3 {
 	vin-supply = <&v_3v2>;
 };
Signature · 1 line
2.18.0
#2 lore raw

PATCH 1/2 ARM: dts: hummingboard2: describe optional rs485

In reply to Baruch Siach
Quoted 5 lines · Baruch Siach

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 <[email protected]>

Russell,

Are you okay with these two patches?

Shawn