Re: [PATCH 4/4] DO_NOT_MERGE arm64: dts: ti: Enable MCU MCANs for AM62x

[Francesco Dolcini]

On Wed, Apr 19, 2023 at 05:33:23PM -0500, Judith Mendez wrote:
> On AM62x there are no hardware interrupts routed to GIC interrupt
> controller for MCU MCAN IP, A53 Linux cannot receive hardware
> interrupts. Since an hrtimer will be used to generate software
> interrupts, add MCU MCAN nodes to dtsi and default to disabled.
> 
> AM62x does not carry on-board CAN transceivers, so instead of
> changing DTB permanently use an overlay to enable MCU MCANs and to
> add CAN transceiver nodes.
> 
> If an hrtimer is used to generate software interrupts, the two
> required interrupt attributes in the MCAN node do not have to be
> included.
> 
> Signed-off-by: Judith Mendez <jm@xxxxxx>

[...]

> +	mcu_mcan1: can@4e00000 {
this should be mcu_mcan0

> +		compatible = "bosch,m_can";
> +		reg = <0x00 0x4e00000 0x00 0x8000>,
> +			  <0x00 0x4e08000 0x00 0x200>;

[...]

> +	mcu_mcan2: can@4e10000 {
mcu_mcan1

> +		compatible = "bosch,m_can";
> +		reg = <0x00 0x4e10000 0x00 0x8000>,
> +			  <0x00 0x4e18000 0x00 0x200>;

Francesco