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0aef513138
I2C nodes defined in the top-level J721s2 SoC dtsi files are incomplete and will not be functional unless they are extended with pinmux information. As the pinmux is only known at the board integration level, these nodes should only be enabled when provided with this information. Disable the I2C nodes in the dtsi files and only enable the ones that are actually pinned out on a given board. Signed-off-by: Andrew Davis <afd@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Bryan Brattlof <bb@ti.com> Link: https://lore.kernel.org/r/20221020160305.18711-13-afd@ti.com
81 lines
1.8 KiB
Text
81 lines
1.8 KiB
Text
// SPDX-License-Identifier: GPL-2.0
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/*
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* SoM: https://www.ti.com/lit/zip/sprr439
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*
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* Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/
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*/
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/dts-v1/;
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#include "k3-j721s2.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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/ {
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memory@80000000 {
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device_type = "memory";
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/* 16 GB RAM */
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reg = <0x00 0x80000000 0x00 0x80000000>,
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<0x08 0x80000000 0x03 0x80000000>;
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};
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/* Reserving memory regions still pending */
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reserved_memory: reserved-memory {
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#address-cells = <2>;
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#size-cells = <2>;
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ranges;
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secure_ddr: optee@9e800000 {
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reg = <0x00 0x9e800000 0x00 0x01800000>;
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alignment = <0x1000>;
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no-map;
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};
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};
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transceiver0: can-phy0 {
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/* standby pin has been grounded by default */
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compatible = "ti,tcan1042";
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#phy-cells = <0>;
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max-bitrate = <5000000>;
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};
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};
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&main_pmx0 {
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main_i2c0_pins_default: main-i2c0-pins-default {
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pinctrl-single,pins = <
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J721S2_IOPAD(0x0e0, PIN_INPUT_PULLUP, 0) /* (AH25) I2C0_SCL */
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J721S2_IOPAD(0x0e4, PIN_INPUT_PULLUP, 0) /* (AE24) I2C0_SDA */
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>;
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};
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main_mcan16_pins_default: main-mcan16-pins-default {
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pinctrl-single,pins = <
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J721S2_IOPAD(0x028, PIN_INPUT, 0) /* (AB24) MCAN16_RX */
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J721S2_IOPAD(0x024, PIN_OUTPUT, 0) /* (Y28) MCAN16_TX */
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>;
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};
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};
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&main_i2c0 {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&main_i2c0_pins_default>;
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clock-frequency = <400000>;
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exp_som: gpio@21 {
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compatible = "ti,tca6408";
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reg = <0x21>;
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gpio-controller;
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#gpio-cells = <2>;
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gpio-line-names = "USB2.0_MUX_SEL", "CANUART_MUX1_SEL0",
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"CANUART_MUX2_SEL0", "CANUART_MUX_SEL1",
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"GPIO_RGMII1_RST", "GPIO_eDP_ENABLE",
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"GPIO_LIN_EN", "CAN_STB";
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};
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};
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&main_mcan16 {
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status = "okay";
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pinctrl-0 = <&main_mcan16_pins_default>;
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pinctrl-names = "default";
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phys = <&transceiver0>;
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};
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