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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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638ab30ce4
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 <w.egorov@phytec.de> Signed-off-by: Daniel Schultz <d.schultz@phytec.de> Link: https://lore.kernel.org/r/20250128100356.462934-1-d.schultz@phytec.de Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
64 lines
1.5 KiB
Plaintext
64 lines
1.5 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-only OR MIT
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/*
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* Copyright (C) 2025 PHYTEC Messtechnik GmbH
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* Authors:
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* Wadim Egorov <w.egorov@phytec.de>
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* Daniel Schultz <d.schultz@phytec.de>
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*
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* GPIO, SPI and UART examples for the X27 expansion connector.
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*/
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/dts-v1/;
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/plugin/;
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#include "k3-pinctrl.h"
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&{/} {
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aliases {
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serial5 = "/bus@f4000/serial@2830000";
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};
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};
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&main_pmx0 {
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main_gpio1_exp_header_gpio_pins_default: main-gpio1-exp-header-gpio-pins-default {
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pinctrl-single,pins = <
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AM64X_IOPAD(0x0220, PIN_INPUT, 7) /* (D14) SPI1_CS1.GPIO1_48 */
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>;
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};
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main_spi1_pins_default: main-spi1-pins-default {
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pinctrl-single,pins = <
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AM64X_IOPAD(0x0224, PIN_INPUT, 0) /* (C14) SPI1_CLK */
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AM64X_IOPAD(0x021C, PIN_OUTPUT, 0) /* (B14) SPI1_CS0 */
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AM64X_IOPAD(0x0228, PIN_OUTPUT, 0) /* (B15) SPI1_D0 */
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AM64X_IOPAD(0x022C, PIN_INPUT, 0) /* (A15) SPI1_D1 */
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>;
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};
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main_uart3_pins_default: main-uart3-pins-default {
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pinctrl-single,pins = <
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AM64X_IOPAD(0x0048, PIN_INPUT, 2) /* (U20) GPMC0_AD3.UART3_RXD */
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AM64X_IOPAD(0x004c, PIN_OUTPUT, 2) /* (U18) GPMC0_AD4.UART3_TXD */
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>;
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};
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};
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&main_gpio1 {
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pinctrl-names = "default";
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pinctrl-0 = <&main_gpio1_exp_header_gpio_pins_default>;
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status = "okay";
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};
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&main_spi1 {
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pinctrl-names = "default";
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pinctrl-0 = <&main_spi1_pins_default>;
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ti,pindir-d0-out-d1-in = <1>;
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status = "okay";
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};
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&main_uart3 {
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pinctrl-names = "default";
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pinctrl-0 = <&main_uart3_pins_default>;
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status = "okay";
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};
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