1 /*
2 * Copyright (c) 2019, NXP
3 * SPDX-License-Identifier: Apache-2.0
4 */
5
6 #include <zephyr/init.h>
7 #include <zephyr/devicetree.h>
8 #include <fsl_common.h>
9 #include <soc.h>
10
lpcxpresso_55s69_board_init(void)11 static int lpcxpresso_55s69_board_init(void)
12 {
13
14 #if (DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(flexcomm6), nxp_lpc_i2s, okay)) && \
15 (DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(flexcomm7), nxp_lpc_i2s, okay)) && \
16 CONFIG_I2S
17 /*
18 * Flexcomm 6 and 7 are connected to codec on board, and shared signal
19 * sets are used to enable one I2S device to handle RX and one to handle
20 * TX
21 */
22 CLOCK_EnableClock(kCLOCK_Sysctl);
23 /* Set shared signal set 0 SCK, WS from Transmit I2S - Flexcomm 7 */
24 SYSCTL->SHAREDCTRLSET[0] = SYSCTL_SHAREDCTRLSET_SHAREDSCKSEL(7) |
25 SYSCTL_SHAREDCTRLSET_SHAREDWSSEL(7);
26
27 #ifdef CONFIG_I2S_TEST_SEPARATE_DEVICES
28 /* Select Data in from Transmit I2S - Flexcomm 7 */
29 SYSCTL->SHAREDCTRLSET[0] |= SYSCTL_SHAREDCTRLSET_SHAREDDATASEL(7);
30 /* Enable Transmit I2S - Flexcomm 7 for Shared Data Out */
31 SYSCTL->SHAREDCTRLSET[0] |= SYSCTL_SHAREDCTRLSET_FC7DATAOUTEN(1);
32 #endif
33
34 /* Set Receive I2S - Flexcomm 6 SCK, WS from shared signal set 0 */
35 SYSCTL->FCCTRLSEL[6] = SYSCTL_FCCTRLSEL_SCKINSEL(1) |
36 SYSCTL_FCCTRLSEL_WSINSEL(1);
37
38 /* Set Transmit I2S - Flexcomm 7 SCK, WS from shared signal set 0 */
39 SYSCTL->FCCTRLSEL[7] = SYSCTL_FCCTRLSEL_SCKINSEL(1) |
40 SYSCTL_FCCTRLSEL_WSINSEL(1);
41
42 #ifdef CONFIG_I2S_TEST_SEPARATE_DEVICES
43 /* Select Receive I2S - Flexcomm 6 Data in from shared signal set 0 */
44 SYSCTL->FCCTRLSEL[6] |= SYSCTL_FCCTRLSEL_DATAINSEL(1);
45 /* Select Transmit I2S - Flexcomm 7 Data out to shared signal set 0 */
46 SYSCTL->FCCTRLSEL[7] |= SYSCTL_FCCTRLSEL_DATAOUTSEL(1);
47 #endif
48
49 #endif
50
51 return 0;
52 }
53
54 SYS_INIT(lpcxpresso_55s69_board_init, PRE_KERNEL_1, 0);
55
