From 638ab30ce4c63edae4934dcaa7a61f37b96efe6c Mon Sep 17 00:00:00 2001 From: Daniel Schultz Date: Tue, 28 Jan 2025 02:03:56 -0800 Subject: [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector Add a device tree overlay for SPI1 , UART3 and GPIO1 on X27 connector. By default, not all interfaces on the X27 connector are accessible due to being disabled or set to alternative pin mux configurations. This overlay activates and configures these interfaces to support connections with external devices. Signed-off-by: Wadim Egorov Signed-off-by: Daniel Schultz Link: https://lore.kernel.org/r/20250128100356.462934-1-d.schultz@phytec.de Signed-off-by: Vignesh Raghavendra --- arch/arm64/boot/dts/ti/Makefile | 3 + ...phyboard-electra-x27-gpio1-spi1-uart3.dtso | 63 +++++++++++++++++++ 2 files changed, 66 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 8a4bdf87e2d41..03d4cecfc001c 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -54,6 +54,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-evm-nand.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-gpio-fan.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-pcie-usb2.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl.dtb dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo @@ -185,6 +186,8 @@ k3-am642-phyboard-electra-gpio-fan-dtbs := \ k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-gpio-fan.dtbo k3-am642-phyboard-electra-pcie-usb2-dtbs := \ k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-pcie-usb2.dtbo +k3-am642-phyboard-electra-x27-gpio1-spi1-uart3-dtbs := \ + k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtbo k3-am642-tqma64xxl-mbax4xxl-sdcard-dtbs := \ k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo k3-am642-tqma64xxl-mbax4xxl-wlan-dtbs := \ diff --git a/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso new file mode 100644 index 0000000000000..996c42ec4253e --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* + * Copyright (C) 2025 PHYTEC Messtechnik GmbH + * Authors: + * Wadim Egorov + * Daniel Schultz + * + * GPIO, SPI and UART examples for the X27 expansion connector. + */ + +/dts-v1/; +/plugin/; + +#include "k3-pinctrl.h" + +&{/} { + aliases { + serial5 = "/bus@f4000/serial@2830000"; + }; +}; + +&main_pmx0 { + main_gpio1_exp_header_gpio_pins_default: main-gpio1-exp-header-gpio-pins-default { + pinctrl-single,pins = < + AM64X_IOPAD(0x0220, PIN_INPUT, 7) /* (D14) SPI1_CS1.GPIO1_48 */ + >; + }; + + main_spi1_pins_default: main-spi1-pins-default { + pinctrl-single,pins = < + AM64X_IOPAD(0x0224, PIN_INPUT, 0) /* (C14) SPI1_CLK */ + AM64X_IOPAD(0x021C, PIN_OUTPUT, 0) /* (B14) SPI1_CS0 */ + AM64X_IOPAD(0x0228, PIN_OUTPUT, 0) /* (B15) SPI1_D0 */ + AM64X_IOPAD(0x022C, PIN_INPUT, 0) /* (A15) SPI1_D1 */ + >; + }; + + main_uart3_pins_default: main-uart3-pins-default { + pinctrl-single,pins = < + AM64X_IOPAD(0x0048, PIN_INPUT, 2) /* (U20) GPMC0_AD3.UART3_RXD */ + AM64X_IOPAD(0x004c, PIN_OUTPUT, 2) /* (U18) GPMC0_AD4.UART3_TXD */ + >; + }; +}; + +&main_gpio1 { + pinctrl-names = "default"; + pinctrl-0 = <&main_gpio1_exp_header_gpio_pins_default>; + status = "okay"; +}; + +&main_spi1 { + pinctrl-names = "default"; + pinctrl-0 = <&main_spi1_pins_default>; + ti,pindir-d0-out-d1-in = <1>; + status = "okay"; +}; + +&main_uart3 { + pinctrl-names = "default"; + pinctrl-0 = <&main_uart3_pins_default>; + status = "okay"; +}; -- 2.47.2