Commit 638ab30c authored by Daniel Schultz's avatar Daniel Schultz Committed by Vignesh Raghavendra
Browse files

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: default avatarWadim Egorov <w.egorov@phytec.de>
Signed-off-by: default avatarDaniel Schultz <d.schultz@phytec.de>
Link: https://lore.kernel.org/r/20250128100356.462934-1-d.schultz@phytec.de


Signed-off-by: default avatarVignesh Raghavendra <vigneshr@ti.com>
parent 38e7f909

arch/arm64/boot/dts/ti/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -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 := \

arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso

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+63 −0
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// SPDX-License-Identifier: GPL-2.0-only OR MIT

/*

 * Copyright (C) 2025 PHYTEC Messtechnik GmbH

 * Authors:

 *   Wadim Egorov <w.egorov@phytec.de>

 *   Daniel Schultz <d.schultz@phytec.de>

 *

 * 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";

};