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boards: mimxrt1020_evk: Added support for SPI on RT1020

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Adds support for LPSPI1 on RT1020. This peripheral is exposed on J19, as
pins 3, 4, 5, and 6

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2021-10-11 09:41:49 -05:00 • committed by Christopher Friedt
commit 430224eacb
5 changed files with 52 additions and 4 deletions
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10
boards/arm/mimxrt1020_evk/doc/index.rst
View file

@ -77,6 +77,8 @@ features:
+-----------+------------+-------------------------------------+
| GPIO | on-chip | gpio |
+-----------+------------+-------------------------------------+
| SPI | on-chip | spi |
+-----------+------------+-------------------------------------+
| I2C | on-chip | i2c |
+-----------+------------+-------------------------------------+
| SDHC | on-chip | disk access |
@ -128,13 +130,13 @@ The MIMXRT1020 SoC has five pairs of pinmux/gpio controllers.
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_09 | ENET_RX_DATA01 | Ethernet |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_10 | ENET_RX_DATA00 | Ethernet |
| GPIO_AD_B0_10 | ENET_RX_DATA00/LPSPI1_SCK | Ethernet/SPI |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_11 | ENET_RX_EN | Ethernet |
| GPIO_AD_B0_11 | ENET_RX_EN/LPSPI1_PCS0 | Ethernet/SPI |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_12 | ENET_RX_ER | Ethernet |
| GPIO_AD_B0_12 | ENET_RX_ER/LPSPI1_SDO | Ethernet/SPI |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_13 | ENET_TX_EN | Ethernet |
| GPIO_AD_B0_13 | ENET_TX_EN/LPSPI1_SDI | Ethernet/SPI |
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_14 | ENET_TX_DATA00 | Ethernet |
+---------------+-----------------+---------------------------+

4
boards/arm/mimxrt1020_evk/mimxrt1020_evk.dts
View file

@ -138,6 +138,10 @@ arduino_serial: &lpuart2 {};
current-speed = <115200>;
};
&lpspi1 {
status = "okay";
};
&enet {
status = "okay";
ptp {

1
boards/arm/mimxrt1020_evk/mimxrt1020_evk.yaml
View file

@ -21,4 +21,5 @@ supported:
- gpio
- i2c
- netif:eth
- spi
- usb_device

34
boards/arm/mimxrt1020_evk/pinmux.c
View file

@ -223,6 +223,40 @@ static int mimxrt1020_evk_init(const struct device *dev)
GPIO_WritePinOutput(GPIO1, 4, 0);
#endif
#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpspi1), okay) && CONFIG_SPI
#if DT_NODE_HAS_STATUS(DT_NODELABEL(enet), okay) && CONFIG_NET_L2_ETHERNET
#error "LPSPI1 and ENET share pins on this board, please disable one" \
"using KConfig or the devicetree"
#else
/* LPSPI1 CS, SDO, SDI, CLK exposed as pins 3, 4, 5, and 6 on J19 */
/* GPIO_AD_B0_10 is configured as LPSPI1_SCK */
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_10_LPSPI1_SCK, 0U);
/* GPIO_AD_B0_11 is configured as LPSPI1_PCS0 */
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_11_LPSPI1_PCS0, 0U);
/* GPIO_AD_B0_12 is configured as LPSPI1_SDO */
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_12_LPSPI1_SDO, 0U);
/* GPIO_AD_B0_13 is configured as LPSPI1_SDI */
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_13_LPSPI1_SDI, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_10_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_AD_B0_11_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_AD_B0_12_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_AD_B0_13_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(usdhc1), okay) && CONFIG_DISK_DRIVER_SDMMC
mimxrt1020_evk_usdhc_pinmux(0, true, 2, 1);
imxrt_usdhc_pinmux_cb_register(mimxrt1020_evk_usdhc_pinmux);

7
tests/drivers/spi/spi_loopback/boards/mimxrt1020_evk.conf Normal file
View file

@ -0,0 +1,7 @@
#
# Copyright (c) 2021, NXP
#
# SPDX-License-Identifier: Apache-2.0
#
CONFIG_SPI_LOOPBACK_DRV_NAME="SPI_1"