ARM: dts: stm32: add pin map for CAN controller on stm32f4

Add pin configurations for using CAN controller on stm32f469-disco
board. They are located on the Arduino compatible connector CN5 (CAN1)
and on the extension connector CN12 (CAN2).

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Link: https://lore.kernel.org/all/20230328073328.3949796-5-dario.binacchi@amarulasolutions.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/arch/arm/boot/dts/stm32f4-pinctrl.dtsi b/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
index 4523c63..3bb812d 100644 (file)
--- a/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
@@ -447,6 +447,36 @@
                                        slew-rate = <2>;
                                };
                        };
+
+                       can1_pins_a: can1-0 {
+                               pins1 {
+                                       pinmux = <STM32_PINMUX('B', 9, AF9)>; /* CAN1_TX */
+                               };
+                               pins2 {
+                                       pinmux = <STM32_PINMUX('B', 8, AF9)>; /* CAN1_RX */
+                                       bias-pull-up;
+                               };
+                       };
+
+                       can2_pins_a: can2-0 {
+                               pins1 {
+                                       pinmux = <STM32_PINMUX('B', 13, AF9)>; /* CAN2_TX */
+                               };
+                               pins2 {
+                                       pinmux = <STM32_PINMUX('B', 5, AF9)>; /* CAN2_RX */
+                                       bias-pull-up;
+                               };
+                       };
+
+                       can2_pins_b: can2-1 {
+                               pins1 {
+                                       pinmux = <STM32_PINMUX('B', 13, AF9)>; /* CAN2_TX */
+                               };
+                               pins2 {
+                                       pinmux = <STM32_PINMUX('B', 12, AF9)>; /* CAN2_RX */
+                                       bias-pull-up;
+                               };
+                       };
                };
        };
 };