2022-08-17 14:52:08

by Dario Binacchi

Subject: [RFC PATCH 3/4] 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 <[email protected]>
Signed-off-by: Dario Binacchi <[email protected]>
---

arch/arm/boot/dts/stm32f4-pinctrl.dtsi | 32 ++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f4-pinctrl.dtsi b/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
index 500bcc302d42..a8709363898a 100644
--- a/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
@@ -448,6 +448,38 @@ pins2 {
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;
+ };
+ };
+
};
};
};
--
2.32.0

2022-08-18 09:05:18

by Krzysztof Kozlowski

Subject: Re: [RFC PATCH 3/4] ARM: dts: stm32: add pin map for CAN controller on stm32f4

On 17/08/2022 17:35, Dario Binacchi wrote:
> 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).
>


> +
> + 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;
> + };
> + };
> +

No need for blank line.



Best regards,
Krzysztof