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    Subject[PATCH 6/6] arm64: dts: ti: k3-am642-evm/sk: Add support for main domain mcan nodes in EVM and disable them on SK
    Date
    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>
    ---
    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 030712221188..1c26ca41e6a5 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 {
    @@ -288,6 +302,20 @@
    AM64X_IOPAD(0x0008, PIN_INPUT, 0) /* (N19) OSPI0_DQS */
    >;
    };
    +
    + 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 {
    @@ -574,3 +602,15 @@
    num-lanes = <1>;
    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 d3aa2901e6fd..15cde862f62c 100644
    --- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
    +++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
    @@ -453,3 +453,11 @@
    &pcie0_ep {
    status = "disabled";
    };
    +
    +&main_mcan0 {
    + status = "disabled";
    +};
    +
    +&main_mcan1 {
    + status = "disabled";
    +};
    --
    2.17.1
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