Messages in this thread | | | Subject | Re: [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 | From | Apurva Nandan <> | Date | Tue, 7 Dec 2021 18:51:59 +0530 |
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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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