d5cc234154
Add gpio hog support for board-specific gpio lines: - put hogs in u-boot.dtsi so as to keep the regular dts files in sync with the kernel. The hogs will not be put in the kernel as that makes them un-usable by userspace as well as re-initializes them to dt defaults overriding changes which may have been done by bootloader commands. - specify gpio names and initial config - enable GPIO_HOG Signed-off-by: Tim Harvey <tharvey@gateworks.com> Acked-by: Peng Fan <peng.fan@nxp.com>
87 lines
1.2 KiB
Plaintext
87 lines
1.2 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2021 Gateworks Corporation
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*/
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#include "imx8mm-venice-gw700x-u-boot.dtsi"
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&gpio1 {
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rs485_term {
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gpio-hog;
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output-low;
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gpios = <0 GPIO_ACTIVE_HIGH>;
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line-name = "rs485_term";
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};
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mipi_gpio4 {
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gpio-hog;
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input;
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gpios = <1 GPIO_ACTIVE_HIGH>;
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line-name = "mipi_gpio4";
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};
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pci_usb_sel {
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gpio-hog;
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output-low;
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gpios = <6 GPIO_ACTIVE_HIGH>;
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line-name = "pci_usb_sel";
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};
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dio_0 {
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gpio-hog;
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input;
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gpios = <7 GPIO_ACTIVE_HIGH>;
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line-name = "dio0";
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};
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dio_1 {
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gpio-hog;
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input;
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gpios = <9 GPIO_ACTIVE_HIGH>;
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line-name = "dio1";
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};
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};
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&gpio4 {
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rs485_en {
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gpio-hog;
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output-low;
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gpios = <0 GPIO_ACTIVE_HIGH>;
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line-name = "rs485_en";
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};
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mipi_gpio3 {
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gpio-hog;
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input;
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gpios = <1 GPIO_ACTIVE_HIGH>;
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line-name = "mipi_gpio3";
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};
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rs485_half {
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gpio-hog;
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output-low;
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gpios = <2 GPIO_ACTIVE_HIGH>;
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line-name = "rs485_hd";
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};
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mipi_gpio2 {
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gpio-hog;
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input;
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gpios = <3 GPIO_ACTIVE_HIGH>;
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line-name = "mipi_gpio2";
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};
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mipi_gpio1 {
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gpio-hog;
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input;
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gpios = <4 GPIO_ACTIVE_HIGH>;
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line-name = "mipi_gpio1";
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};
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pci_wdis {
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gpio-hog;
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output-high;
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gpios = <7 GPIO_ACTIVE_HIGH>;
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line-name = "pci_wdis#";
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};
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};
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