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SubjectRe: [PATCH v5 6/6] arm64: dts: ti: k3-am642-evm/sk: Add support for main domain mcan nodes in EVM and disable them on SK
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On 22/11/21 7:11 pm, Aswath Govindraju wrote:
> AM642 EVM has two CAN connecters brought out from the two MCAN instances in
> the main domain through transceivers. Add device tree nodes for
> transceivers and set the required properties in the mcan device tree nodes,
> in EVM device tree file.
>
> On AM642 SK there are no connectors brought out for CAN. Therefore, disable
> the mcan device tree nodes in the SK device tree file.
>
> Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>

Reviewed-by: Apurva Nandan <a-nandan@ti.com>

> ---
> arch/arm64/boot/dts/ti/k3-am642-evm.dts | 40 +++++++++++++++++++++++++
> arch/arm64/boot/dts/ti/k3-am642-sk.dts | 8 +++++
> 2 files changed, 48 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> index 6726c4c7c28c..e94ae178b1ae 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> @@ -184,6 +184,20 @@
> };
> };
> };
> +
> + transceiver1: can-phy0 {
> + compatible = "ti,tcan1042";
> + #phy-cells = <0>;
> + max-bitrate = <5000000>;
> + standby-gpios = <&exp1 8 GPIO_ACTIVE_HIGH>;
> + };
> +
> + transceiver2: can-phy1 {
> + compatible = "ti,tcan1042";
> + #phy-cells = <0>;
> + max-bitrate = <5000000>;
> + standby-gpios = <&exp1 9 GPIO_ACTIVE_HIGH>;
> + };
> };
>
> &main_pmx0 {
> @@ -294,6 +308,20 @@
> AM64X_IOPAD(0x0270, PIN_INPUT, 0) /* (D18) ECAP0_IN_APWM_OUT */
> >;
> };
> +
> + main_mcan0_pins_default: main-mcan0-pins-default {
> + pinctrl-single,pins = <
> + AM64X_IOPAD(0x0254, PIN_INPUT, 0) /* (B17) MCAN0_RX */
> + AM64X_IOPAD(0x0250, PIN_OUTPUT, 0) /* (A17) MCAN0_TX */
> + >;
> + };
> +
> + main_mcan1_pins_default: main-mcan1-pins-default {
> + pinctrl-single,pins = <
> + AM64X_IOPAD(0x025c, PIN_INPUT, 0) /* (D17) MCAN1_RX */
> + AM64X_IOPAD(0x0258, PIN_OUTPUT, 0) /* (C17) MCAN1_TX */
> + >;
> + };
> };
>
> &main_uart0 {
> @@ -638,3 +666,15 @@
> &icssg1_mdio {
> status = "disabled";
> };
> +
> +&main_mcan0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&main_mcan0_pins_default>;
> + phys = <&transceiver1>;
> +};
> +
> +&main_mcan1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&main_mcan1_pins_default>;
> + phys = <&transceiver2>;
> +};
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
> index 6b04745147be..a9785bec12df 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
> @@ -525,3 +525,11 @@
> &icssg1_mdio {
> status = "disabled";
> };
> +
> +&main_mcan0 {
> + status = "disabled";
> +};
> +
> +&main_mcan1 {
> + status = "disabled";
> +};

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