From: Faiz Abbas <faiz_abbas@xxxxxx> There are two MCAN instances present on the am65x SoC [0]. Since there are two CAN transceivers on the IDK application board for AM654 EVM [1], enable m_can0 and m_can1, add the two corresponding CAN transceiver nodes, and set a maximum data rate of 5 Mbps. [0] https://www.ti.com/lit/ds/symlink/am6548.pdf [1] https://www.ti.com/lit/zip/sprr382 Signed-off-by: Faiz Abbas <faiz_abbas@xxxxxx> Signed-off-by: Judith Mendez <jm@xxxxxx> --- arch/arm64/boot/dts/ti/k3-am654-idk.dtso | 61 ++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am654-idk.dtso b/arch/arm64/boot/dts/ti/k3-am654-idk.dtso index 8bdb87fcbde00..39c96b7961881 100644 --- a/arch/arm64/boot/dts/ti/k3-am654-idk.dtso +++ b/arch/arm64/boot/dts/ti/k3-am654-idk.dtso @@ -8,6 +8,7 @@ /dts-v1/; /plugin/; +#include <dt-bindings/gpio/gpio.h> #include <dt-bindings/net/ti-dp83867.h> #include "k3-pinctrl.h" @@ -154,6 +155,24 @@ icssg1_emac1: port@1 { }; }; }; + + transceiver1: can-phy0 { + compatible = "ti,tcan1042"; + #phy-cells = <0>; + max-bitrate = <5000000>; + pinctrl-names = "default"; + pinctrl-0 = <&mcan0_gpio_pins_default>; + standby-gpios = <&main_gpio1 47 GPIO_ACTIVE_LOW>; + }; + + transceiver2: can-phy1 { + compatible = "ti,tcan1042"; + #phy-cells = <0>; + max-bitrate = <5000000>; + pinctrl-names = "default"; + pinctrl-0 = <&mcan1_gpio_pins_default>; + standby-gpios = <&main_gpio1 67 GPIO_ACTIVE_LOW>; + }; }; &main_pmx0 { @@ -243,6 +262,34 @@ icssg1_iep0_pins_default: icssg1-iep0-default-pins { AM65X_IOPAD(0x012c, PIN_INPUT, 2) /* (AG26) PRG1_PRU0_GPO19.PRG1_IEP0_EDC_SYNC_OUT0 */ >; }; + + mcan0_gpio_pins_default: mcan0-gpio-default-pins { + pinctrl-single,pins = < + AM65X_IOPAD(0x023c, PIN_INPUT, 7) /* (V25) PRG0_PRU0_GPIO18:GPIO1_47 */ + >; + }; + + mcan1_gpio_pins_default: mcan1-gpio-default-pins { + pinctrl-single,pins = < + AM65X_IOPAD(0x028c, PIN_INPUT, 7) /* (Y26) PRG0_PRU1_GPIO18.GPIO1_67 */ + >; + }; +}; + +&wkup_pmx0 { + mcu_mcan0_pins_default: mcu-mcan0-default-pins { + pinctrl-single,pins = < + AM65X_WKUP_IOPAD(0x00ac, PIN_INPUT_PULLUP, 0) /* (W2) MCU_MCAN0_RX */ + AM65X_WKUP_IOPAD(0x00a8, PIN_OUTPUT_PULLUP, 0) /* (W1) MCU_MCAN0_TX */ + >; + }; + + mcu_mcan1_pins_default: mcu-mcan1-default-pins { + pinctrl-single,pins = < + AM65X_WKUP_IOPAD(0x00c4, PIN_INPUT_PULLUP, 1) /* (AD3) WKUP_GPIO0_5.MCU_MCAN1_RX */ + AM65X_WKUP_IOPAD(0x00c0, PIN_OUTPUT_PULLUP, 1) /* (AC3) WKUP_GPIO0_4.MCU_MCAN1_TX */ + >; + }; }; &icssg0_mdio { @@ -294,3 +341,17 @@ &icssg1_iep0 { pinctrl-names = "default"; pinctrl-0 = <&icssg1_iep0_pins_default>; }; + +&m_can0 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&mcu_mcan0_pins_default>; + phys = <&transceiver1>; +}; + +&m_can1 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&mcu_mcan1_pins_default>; + phys = <&transceiver2>; +}; base-commit: e3cce1229c34b5c28f103361c4d6b3ef17302d5d -- 2.46.0
