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boards: mimxrt1050_evk: Added support for LPSPI1 peripheral

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RT1050 has multiple LPSPI peripherals. The simplest to access is LPSPI1,
which can be connected by bridging solder jumpers on the board. Enable
this SPI peripheral, and set it as default for SPI tests.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2021-10-08 09:55:38 -05:00 • committed by Christopher Friedt
commit 4c81289a83
4 changed files with 49 additions and 7 deletions
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16
boards/arm/mimxrt1050_evk/doc/index.rst
View file

@ -131,9 +131,9 @@ The MIMXRT1050 SoC has five pairs of pinmux/gpio controllers.
+---------------+-----------------+---------------------------+
| Name | Function | Usage |
+===============+=================+===========================+
| GPIO_AD_B0_00 | LPSPI3_SCK | SPI |
| GPIO_AD_B0_00 | LPSPI1_SCK | SPI |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_01 | LPSPI3_SDO | SPI |
| GPIO_AD_B0_01 | LPSPI1_SDO | SPI |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_02 | LPSPI3_SDI/LCD_RST| SPI/LCD Display |
+---------------+-----------------+---------------------------+
@ -231,19 +231,23 @@ The MIMXRT1050 SoC has five pairs of pinmux/gpio controllers.
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_10 | ENET_INT | Ethernet |
+---------------+-----------------+---------------------------+
| GPIO_SD_B0_00 | USDHC1_CMD | SD Card |
| GPIO_SD_B0_00 | USDHC1_CMD/LPSPI1_SCK | SD Card/SPI |
+---------------+-----------------+---------------------------+
| GPIO_SD_B0_01 | USDHC1_CLK | SD Card |
| GPIO_SD_B0_01 | USDHC1_CLK/LPSPI1_PCS0 | SD Card/SPI |
+---------------+-----------------+---------------------------+
| GPIO_SD_B0_02 | USDHC1_DATA0 | SD Card |
| GPIO_SD_B0_02 | USDHC1_DATA0/LPSPI1_SDO | SD Card/SPI |
+---------------+-----------------+---------------------------+
| GPIO_SD_B0_03 | USDHC1_DATA1 | SD Card |
| GPIO_SD_B0_03 | USDHC1_DATA1/LPSPI1_SDI | SD Card/SPI |
+---------------+-----------------+---------------------------+
| GPIO_SD_B0_04 | USDHC1_DATA2 | SD Card |
+---------------+-----------------+---------------------------+
| GPIO_SD_B0_05 | USDHC1_DATA3 | SD Card |
+---------------+-----------------+---------------------------+
.. note::
In order to use the SPI peripheral on this board, resistors R278,
R279, R280, and R281 must be populated with zero ohm resistors
System Clock
============

4
boards/arm/mimxrt1050_evk/mimxrt1050_evk.dts
View file

@ -141,6 +141,10 @@ arduino_serial: &lpuart3 {};
current-speed = <115200>;
};
&lpspi1 {
status = "okay";
};
&lpspi3 {
status = "okay";
};

34
boards/arm/mimxrt1050_evk/pinmux.c
View file

@ -183,6 +183,40 @@ static int mimxrt1050_evk_init(const struct device *dev)
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif
#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpspi1), okay) && CONFIG_SPI
#if DT_NODE_HAS_STATUS(DT_NODELABEL(usdhc1), okay) && CONFIG_DISK_DRIVER_SDMMC
#error "SPI and SDMMC pins conflict on this board." \
"Please disable one via KConfig or device tree"
#else
/* LPSPI1 SCK, SDO, SDI, PCS0 */
/* Expose these pins by connecting R278, R279, R280, and R281 on evk board */
IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_00_LPSPI1_SCK, 0);
IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_01_LPSPI1_PCS0, 0);
IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_02_LPSPI1_SDO, 0);
IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_03_LPSPI1_SDI, 0);
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_00_LPSPI1_SCK,
IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_01_LPSPI1_PCS0,
IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_02_LPSPI1_SDO,
IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_03_LPSPI1_SDI,
IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif
#endif
#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpspi3), okay) && CONFIG_SPI
/* LPSPI3 SCK, SDO, SDI, PCS0 */
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_00_LPSPI3_SCK, 0);

2
tests/drivers/spi/spi_loopback/boards/mimxrt1050_evk.conf
View file

@ -4,4 +4,4 @@
# SPDX-License-Identifier: Apache-2.0
#
CONFIG_SPI_LOOPBACK_DRV_NAME="SPI_3"
CONFIG_SPI_LOOPBACK_DRV_NAME="SPI_1"