54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <init.h>
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#include <drivers/pinmux.h>
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#include "iomux.h"
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/*
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* :::::::::::: NOTE ::::::::::::
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* For a list of possible I/O MUX settings,
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* See soc/xtensa/intel_s1000/iomux.h
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*/
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/*
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* Initializes the I/O MUX with the setting needed per Intel S1000 CRB
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* For customizations, please refer to the table above for available settings
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* Please note that a call to pinmux_pin_set is only needed when a setting
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* that is not default is required
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*/
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static int intel_s1000_pinmux_init(struct device *dev)
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{
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struct device *pinmux;
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pinmux = device_get_binding(CONFIG_PINMUX_NAME);
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if (pinmux == NULL) {
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return -ENXIO;
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}
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/* Select PDM instead of I2S0 since board has 8 microphones */
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pinmux_pin_set(pinmux, PIN_GROUP(I2S0), PINMUX_FUNC_B);
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/*
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* I2S3 is wired to the host interface connector.
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* Select GPIO to avoid any conflict with hosts that may be driving
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* the signals.
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*/
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pinmux_pin_set(pinmux, PIN_GROUP(I2S3), PINMUX_FUNC_B);
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/* TI DAC is on I2C1. Usually, there is no device on I2C0 */
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pinmux_pin_set(pinmux, PIN_GROUP(I2C), PINMUX_FUNC_B);
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/* Intel S1000 CRB has an octal SPI flash. Select MST_DQ */
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pinmux_pin_set(pinmux, PIN_GROUP(EM_DQ), PINMUX_FUNC_B);
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return 0;
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}
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SYS_INIT(intel_s1000_pinmux_init, PRE_KERNEL_2, CONFIG_PINMUX_INIT_PRIORITY);
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