mirror of
https://github.com/apache/nuttx.git
synced 2026-05-21 21:34:07 +08:00
Add support for SPI through i.MX8MP ecspi module.
Configure SPI for Verdin evaluation board
This commit is contained in:
Philippe Leduc
committed by
Alan Carvalho de Assis
Alan Carvalho de Assis
parent
21beb284bc
commit
f38cdb09b4
@@ -84,6 +84,45 @@ if MX8MP_I2C
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in any real driver application.
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endif # MX8MP_I2C
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#####################################################################
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# SPI Configuration (Master)
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#####################################################################
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config MX8MP_SPI
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bool "SPI Master"
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select SPI
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---help---
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Build in support for SPI master mode.
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if MX8MP_SPI
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config MX8MP_SPI1
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bool "SPI1"
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default n
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select SPI
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config MX8MP_SPI2
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bool "SPI2"
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default n
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select SPI
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config MX8MP_SPI3
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bool "SPI3"
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default n
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select SPI
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config MX8MP_SPI_DRIVER
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bool "SPI character driver"
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default n
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select SPI_DRIVER
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---help---
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Build in support for a character driver at /dev/spi[N] that may b
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used to perform SPI bus transfers from applications. The intent of
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this driver is to support SPI testing.
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endif # MX8MP_SPI
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endmenu
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# These "hidden" settings determine whether a peripheral option is available
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@@ -39,3 +39,7 @@ endif
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ifeq ($(CONFIG_I2C),y)
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CHIP_CSRCS += mx8mp_i2c.c
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endif
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ifeq ($(CONFIG_SPI),y)
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CHIP_CSRCS += mx8mp_ecspi.c
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endif
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@@ -0,0 +1,102 @@
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/****************************************************************************
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* arch/arm/src/mx8mp/hardware/mx8mp_ecspi.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_ECSPI_H
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#define __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_ECSPI_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* ECSPI Register Offsets ***************************************************/
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#define RXDATA_OFFSET 0x0000
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#define TXDATA_OFFSET 0x0004
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#define CONREG_OFFSET 0x0008
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#define CONFIGREG_OFFSET 0x000c
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#define INTREG_OFFSET 0x0010
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#define DMAREG_OFFSET 0x0014
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#define STATREG_OFFSET 0x0018
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#define PERIODREG_OFFSET 0x001C
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#define TESTREG_OFFSET 0x0020
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#define MSGDATA_OFFSET 0x0040
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/* ECSPI Register Bit Definitions *******************************************/
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#define CONREG_BURST_LENGTH (20)
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#define CONREG_CHANNEL_SELECT (18)
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#define CONREG_PRE_DIVIDER (12)
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#define CONREG_POST_DIVIDER (8)
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#define CONREG_CHANNEL_MODE (4)
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#define CONREG_SMC (1 << 3)
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#define CONREG_XCH (1 << 2)
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#define CONREG_HT (1 << 1)
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#define CONREG_EN (1 << 0)
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#define CONFIGREG_HT_LENGTH (24)
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#define CONFIGREG_SLCK_CTL (20)
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#define CONFIGREG_DATA_CTL (16)
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#define CONFIGREG_SS_POL (12)
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#define CONFIGREG_SS_CTL (8)
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#define CONFIGREG_SCLK_POL (4)
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#define CONFIGREG_SCLK_PHA (0)
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#define INTREG_TCEN (1 << 7)
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#define INTREG_ROEN (1 << 6)
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#define INTREG_RFEN (1 << 5)
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#define INTREG_RDREN (1 << 4)
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#define INTREG_RREN (1 << 3)
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#define INTREG_TFEN (1 << 2)
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#define INTREG_TDREN (1 << 1)
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#define INTREG_TEEN (1 << 0)
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#define DMAREG_RXTDEN (1 << 31)
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#define DMAREG_RX_DMA_LENGTH (24)
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#define DMAREG_RXDEN (1 << 23)
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#define DMAREG_RX_THRESHOLD (16)
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#define DMAREG_TEDEN (1 << 7)
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#define DMAREG_TX_THRESHOLD (0)
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#define STATREG_TC (1 << 7)
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#define STATREG_RO (1 << 6)
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#define STATREG_RF (1 << 5)
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#define STATREG_RDR (1 << 4)
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#define STATREG_RR (1 << 3)
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#define STATREG_TF (1 << 2)
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#define STATREG_TDR (1 << 1)
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#define STATREG_TE (1 << 0)
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#define PERIODREG_CSD_CTL (16)
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#define PERIODREG_CSRC (1 << 15)
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#define PERIODREG_SAMPLE_PERIOD (0)
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#define TESTREG_LBC (1 << 31)
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#define TESTREG_RXCNT (8)
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#define TESTREG_TXCNT (0)
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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#endif /* __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_ECSPI_H */
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@@ -924,5 +924,6 @@
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#define GPIO_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PE | PAD_CTL_DSE2)
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#define UART_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_PE)
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#define SPI_PAD_CTRL (PAD_CTL_PUE)
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#endif /* __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_PINMUX_H */
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,114 @@
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/****************************************************************************
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* arch/arm/src/mx8mp/mx8mp_ecspi.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_MX8MP_MX8MP_ECSPI_H
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#define __ARCH_ARM_SRC_MX8MP_MX8MP_ECSPI_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Public Data
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****************************************************************************/
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struct spi_dev_s;
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: mx8mp_spibus_initialize
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*
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* Description:
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* Initialize the selected SPI bus
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*
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* Input Parameters:
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* bus number (for hardware that has multiple SPI interfaces)
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*
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* Returned Value:
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* Valid SPI device structure reference on success; a NULL on failure
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*
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****************************************************************************/
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struct spi_dev_s *mx8mp_spibus_initialize(int bus);
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/****************************************************************************
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* Name:
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* mx8mp_spi[n]select, mx8mp_spi[n]status, and mx8mp_spi[n]cmddata
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*
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* Description:
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* These external functions must be provided by board-specific logic.
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* They are implementations of the select, status, and cmddata methods of
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* the SPI interface defined by struct spi_ops_s
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* (see include/nuttx/spi/spi.h). All other methods including
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* mx8mp_spibus_initialize()) are provided by common Kinetis logic.
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* To use this common SPI logic on your board:
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*
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* 1. Provide logic in mx8mp_boardinitialize() to configure SPI chip
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* select pins.
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* 2. Provide mx8mp_spi[n]select() and mx8mp_spi[n]status() functions
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* in your board-specific logic. These functions will perform chip
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* selection and status operations using GPIOs in the way your board is
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* configured.
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* 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
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* mx8mp_spi[n]cmddata() functions in your board-specific logic.
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* These functions will perform cmd/data selection operations using
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* GPIOs in the way your board is configured.
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* 3. Add a call to mx8mp_spibus_initialize() in your low level
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* application initialization logic
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* 4. The handle returned by mx8mp_spibus_initialize() may then be used
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* to bind the SPI driver to higher level logic (e.g., calling
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* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
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* the SPI MMC/SD driver).
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*
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****************************************************************************/
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#ifdef CONFIG_MX8MP_SPI1
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void mx8mp_spi1_select(struct spi_dev_s *dev,
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uint32_t devid, bool selected);
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uint8_t mx8mp_spi1_status(struct spi_dev_s *dev, uint32_t devid);
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#ifdef CONFIG_SPI_CMDDATA
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int mx8mp_spi1_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd);
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#endif
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#endif
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#ifdef CONFIG_MX8MP_SPI2
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void mx8mp_spi2_select(struct spi_dev_s *dev,
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uint32_t devid, bool selected);
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uint8_t mx8mp_spi2_status(struct spi_dev_s *dev, uint32_t devid);
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#ifdef CONFIG_SPI_CMDDATA
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int mx8mp_spi2_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd);
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#endif
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#endif
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#ifdef CONFIG_MX8MP_SPI3
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void mx8mp_spi3_select(struct spi_dev_s *dev,
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uint32_t devid, bool selected);
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uint8_t mx8mp_spi3_status(struct spi_dev_s *dev, uint32_t devid);
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#ifdef CONFIG_SPI_CMDDATA
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int mx8mp_spi3_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd);
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#endif
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#endif
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#endif /* __ARCH_ARM_SRC_MX8MP_MX8MP_ECSPI_H */
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@@ -22,12 +22,13 @@
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* Included Files
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****************************************************************************/
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#include <nuttx/i2c/i2c_master.h>
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#include <nuttx/signal.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "mx8mp_i2c.h"
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#include "mx8mp_ccm.h"
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#include "hardware/mx8mp_memorymap.h"
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#include "hardware/mx8mp_i2c.h"
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#include <debug.h>
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#include "arm_internal.h"
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@@ -26,8 +26,12 @@
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "hardware/mx8mp_i2c.h"
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/****************************************************************************
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* Public Data
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****************************************************************************/
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struct i2c_master_s;
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/****************************************************************************
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* Public Function Prototypes
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@@ -34,6 +34,14 @@ ifeq ($(CONFIG_MX8MP_I2C_DRIVER),y)
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CSRCS += mx8mp_i2cdev.c
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endif
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ifeq ($(CONFIG_SPI),y)
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CSRCS += mx8mp_spi.c
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endif
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ifeq ($(CONFIG_MX8MP_SPI_DRIVER),y)
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CSRCS += mx8mp_spidev.c
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endif
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ifeq ($(CONFIG_ARCH_LEDS),y)
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CSRCS += mx8mp_autoleds.c
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else
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@@ -115,5 +115,15 @@ int mx8mp_bringup(void)
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}
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#endif
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#ifdef CONFIG_MX8MP_SPI_DRIVER
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/* Initialize SPI buses */
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ret = mx8mp_spidev_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: spidev_initialize() failed: %d\n", ret);
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}
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#endif
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return ret;
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}
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@@ -0,0 +1,122 @@
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/****************************************************************************
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* boards/arm/mx8mp/verdin-mx8mp/src/mx8mp_spi.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
|
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* this work for additional information regarding copyright ownership. The
|
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
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* License. You may obtain a copy of the License at
|
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
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* under the License.
|
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include "arm_internal.h"
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#include "chip.h"
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#include "mx8mp_gpio.h"
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#include <arch/board/board.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mx8mp_spi1/2/3select and mx8mp_spi1/2/3status
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*
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* Description:
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* The external functions, mx8mp_spi1/2/3select and mx8mp_spi1/2/3status
|
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* must be provided by board-specific logic.
|
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* They are implementations of the select and status methods of the SPI
|
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* interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h).
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*
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****************************************************************************/
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#ifdef CONFIG_MX8MP_SPI1
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void mx8mp_spi1_select(struct spi_dev_s *dev, uint32_t devid,
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bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid,
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selected ? "assert" : "de-assert");
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/* nothing to do : CS handled by module */
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}
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uint8_t mx8mp_spi1_status(struct spi_dev_s *dev, uint32_t devid)
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{
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return 0;
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}
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#ifdef CONFIG_SPI_CMDDATA
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int mx8mp_spi1_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
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{
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return -ENODEV;
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}
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#endif
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#endif
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#ifdef CONFIG_MX8MP_SPI2
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void mx8mp_spi2_select(struct spi_dev_s *dev, uint32_t devid,
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bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid,
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selected ? "assert" : "de-assert");
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mx8mp_gpio_write(GPIO_SPI2_CS, !selected);
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}
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uint8_t mx8mp_spi2_status(struct spi_dev_s *dev, uint32_t devid)
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{
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return 0;
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}
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#ifdef CONFIG_SPI_CMDDATA
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int mx8mp_spi2_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
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{
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return -ENODEV;
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}
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#endif
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#endif
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#ifdef CONFIG_MX8MP_SPI3
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void mx8mp_spi3_select(struct spi_dev_s *dev, uint32_t devid,
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bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid,
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selected ? "assert" : "de-assert");
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mx8mp_gpio_write(GPIO_SPI3_CS, !selected);
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}
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uint8_t mx8mp_spi3_status(struct spi_dev_s *dev, uint32_t devid)
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{
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return 0;
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}
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#ifdef CONFIG_SPI_CMDDATA
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int mx8mp_spi3_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
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{
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return -ENODEV;
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}
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#endif
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#endif
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@@ -0,0 +1,138 @@
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/****************************************************************************
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* boards/arm/mx8mp/verdin-mx8mp/src/mx8mp_spidev.c
|
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*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership. The
|
||||
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/spi/spi_transfer.h>
|
||||
|
||||
#include "arm_internal.h"
|
||||
#include "chip.h"
|
||||
#include "mx8mp_ecspi.h"
|
||||
#include "verdin-mx8mp.h"
|
||||
|
||||
#include <arch/board/board.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: board_spidev_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize and register spi driver for the specified spi port
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int board_spidev_initialize(int port)
|
||||
{
|
||||
int ret;
|
||||
struct spi_dev_s *spi;
|
||||
|
||||
spiinfo("Initializing /dev/spi%d..\n", port);
|
||||
|
||||
/* Initialize spi device */
|
||||
|
||||
spi = mx8mp_spibus_initialize(port);
|
||||
if (!spi)
|
||||
{
|
||||
i2cerr("ERROR: Failed to initialize spi%d.\n", port);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ret = spi_register(spi, port);
|
||||
if (ret < 0)
|
||||
{
|
||||
i2cerr("ERROR: Failed to register spi%d: %d\n", port, ret);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: mx8mp_spidev_initialize
|
||||
*
|
||||
* Description:
|
||||
* Called to configure all spi drivers
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int mx8mp_spidev_initialize(void)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
#ifdef CONFIG_MX8MP_SPI1
|
||||
mx8mp_iomuxc_config(IOMUX_SPI1_MISO);
|
||||
mx8mp_iomuxc_config(IOMUX_SPI1_MOSI);
|
||||
mx8mp_iomuxc_config(IOMUX_SPI1_CLK);
|
||||
mx8mp_iomuxc_config(IOMUX_SPI1_CS);
|
||||
|
||||
ret = board_spidev_initialize(1);
|
||||
if (ret < 0)
|
||||
{
|
||||
syslog(LOG_ERR, "Failed to initialize I2C1.\n");
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MX8MP_SPI2
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI2_MISO);
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI2_MOSI);
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI2_CLK);
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI2_CS);
|
||||
mx8mp_gpio_config(GPIO_SPI2_CS);
|
||||
|
||||
ret = board_spidev_initialize(2);
|
||||
if (ret < 0)
|
||||
{
|
||||
syslog(LOG_ERR, "Failed to initialize I2C2.\n");
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MX8MP_SPI3
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI3_MISO);
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI3_MOSI);
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI3_CLK);
|
||||
mx8mp_iomuxc_config(IOMUXC_SPI3_CS);
|
||||
mx8mp_gpio_config(GPIO_SPI3_CS);
|
||||
|
||||
ret = board_spidev_initialize(3);
|
||||
if (ret < 0)
|
||||
{
|
||||
syslog(LOG_ERR, "Failed to initialize I2C3.\n");
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
@@ -51,6 +51,13 @@
|
||||
#define BUTTON_1_IRQ MX8MP_IRQ_SOFT_GPIO1_7
|
||||
#define BUTTON_1_IOMUX IOMUXC_GPIO1_IO07_GPIO1_IO07, 0, GPIO_PAD_CTRL
|
||||
|
||||
/* SPIs */
|
||||
|
||||
#define IOMUX_SPI1_CLK IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK, 0, SPI_PAD_CTRL
|
||||
#define IOMUX_SPI1_MOSI IOMUXC_ECSPI1_MISO_ECSPI1_MISO, 0, SPI_PAD_CTRL
|
||||
#define IOMUX_SPI1_MISO IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI, 0, SPI_PAD_CTRL
|
||||
#define IOMUX_SPI1_CS IOMUXC_ECSPI1_SS0_ECSPI1_SS0, 0, SPI_PAD_CTRL
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
@@ -85,5 +92,15 @@ int mx8mp_bringup(void);
|
||||
|
||||
int mx8mp_i2cdev_initialize(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: mx8mp_spidev_initialize
|
||||
*
|
||||
* Description:
|
||||
* Called to configure all spi
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int mx8mp_spidev_initialize(void);
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* __BOARDS_ARM_MX8MP_MX8MP_VERDIN_SRC_VERDIN_MX8MP_H */
|
||||
|
||||
Reference in New Issue
Block a user