The J722S-EVM has 3 PWM outputs and 1 ECAP output routed to the J28 connector. This overlay will set the appropriate pinmux and enable PWM and ECAP on the pins. Currently enabled PWM output on J28: 29, 31, 33 pins and ECAP output on J28: 32 pin Signed-off-by: Bhavya Kapoor <b-kapoor@xxxxxx> --- arch/arm64/boot/dts/ti/Makefile | 1 + arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso | 53 ++++++++++++++++++++ 2 files changed, 54 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index e20b27ddf901..61d51284dcba 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -111,6 +111,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-pcie1-ep.dtbo # Boards with J722s SoC dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb +dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-pwm.dtbo # Boards with J784s4 SoC dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso b/arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso new file mode 100644 index 000000000000..f6d1f072b140 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j722s-evm-pwm.dtso @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * DT Overlay for enabling PWM output on User Expansion header on J722S-EVM + * + * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/gpio/gpio.h> +#include "k3-pinctrl.h" + +&main_pmx0 { + + main_epwm0_pins_default: main-epwm0-default-pins { + pinctrl-single,pins = < + J722S_IOPAD(0x01b4, PIN_OUTPUT, 2) /* (B20) EHRPWM0_A */ + >; + }; + + main_epwm1_pins_default: main-epwm1-default-pins { + pinctrl-single,pins = < + J722S_IOPAD(0x01bc, PIN_OUTPUT, 2) /* (D20) EHRPWM1_A */ + J722S_IOPAD(0x01c0, PIN_OUTPUT, 2) /* (E19) EHRPWM1_B */ + >; + }; + + main_ecap0_pins_default: main-ecap0-default-pins { + pinctrl-single,pins = < + J722S_IOPAD(0x01b8, PIN_OUTPUT, 3) /* (C20) ECAP0_IN_APWM_OUT */ + >; + }; +}; + +&epwm0 { + pinctrl-names = "default"; + pinctrl-0 = <&main_epwm0_pins_default>; + status = "okay"; +}; + +&epwm1 { + pinctrl-names = "default"; + pinctrl-0 = <&main_epwm1_pins_default>; + status = "okay"; +}; + +&ecap0 { + /* ECAP in APWM mode */ + pinctrl-names = "default"; + pinctrl-0 = <&main_ecap0_pins_default>; + status = "okay"; +}; -- 2.34.1
