1 /*
2 * Copyright (c) 2021, NXP
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #define DT_DRV_COMPAT nxp_imx_ccm_rev2
8 #include <errno.h>
9 #include <soc.h>
10 #include <drivers/clock_control.h>
11 #include <dt-bindings/clock/imx_ccm_rev2.h>
12 #include <fsl_clock.h>
13
14 #define LOG_LEVEL CONFIG_CLOCK_CONTROL_LOG_LEVEL
15 #include <logging/log.h>
16 LOG_MODULE_REGISTER(clock_control);
17
mcux_ccm_on(const struct device * dev,clock_control_subsys_t sub_system)18 static int mcux_ccm_on(const struct device *dev,
19 clock_control_subsys_t sub_system)
20 {
21 return 0;
22 }
23
mcux_ccm_off(const struct device * dev,clock_control_subsys_t sub_system)24 static int mcux_ccm_off(const struct device *dev,
25 clock_control_subsys_t sub_system)
26 {
27 return 0;
28 }
29
mcux_ccm_get_subsys_rate(const struct device * dev,clock_control_subsys_t sub_system,uint32_t * rate)30 static int mcux_ccm_get_subsys_rate(const struct device *dev,
31 clock_control_subsys_t sub_system,
32 uint32_t *rate)
33 {
34 uint32_t clock_name = (uint32_t) sub_system;
35 uint32_t clock_root, peripheral, instance;
36
37 peripheral = (clock_name & IMX_CCM_PERIPHERAL_MASK);
38 instance = (clock_name & IMX_CCM_INSTANCE_MASK);
39 switch (peripheral) {
40 #ifdef CONFIG_I2C_MCUX_LPI2C
41 case IMX_CCM_LPI2C1_CLK:
42 clock_root = kCLOCK_Root_Lpi2c1 + instance;
43 break;
44 #endif
45
46 #ifdef CONFIG_SPI_MCUX_LPSPI
47 case IMX_CCM_LPSPI1_CLK:
48 clock_root = kCLOCK_Root_Lpspi1 + instance;
49 break;
50 #endif
51
52 #ifdef CONFIG_UART_MCUX_LPUART
53 case IMX_CCM_LPUART1_CLK:
54 clock_root = kCLOCK_Root_Lpuart1 + instance;
55 break;
56 #endif
57
58 #if DT_NODE_HAS_STATUS(DT_NODELABEL(usdhc1), okay) && CONFIG_DISK_DRIVER_SDMMC
59 case IMX_CCM_USDHC1_CLK:
60 clock_root = kCLOCK_Root_Usdhc1 + instance;
61 break;
62 #endif
63
64 #ifdef CONFIG_DMA_MCUX_EDMA
65 case IMX_CCM_EDMA_CLK:
66 clock_root = kCLOCK_Root_Edma + instance;
67 break;
68 #endif
69
70 #ifdef CONFIG_CAN_MCUX_FLEXCAN
71 case IMX_CCM_CAN1_CLK:
72 clock_root = kCLOCK_Root_Can1 + instance;
73 break;
74 #endif
75
76 #ifdef CONFIG_COUNTER_MCUX_GPT
77 case IMX_CCM_GPT_CLK:
78 clock_root = kCLOCK_Root_Gpt1 + instance;
79 break;
80 #endif
81 default:
82 return -EINVAL;
83 }
84
85 *rate = CLOCK_GetRootClockFreq(clock_root);
86 return 0;
87 }
88
mcux_ccm_init(const struct device * dev)89 static int mcux_ccm_init(const struct device *dev)
90 {
91 return 0;
92 }
93
94 static const struct clock_control_driver_api mcux_ccm_driver_api = {
95 .on = mcux_ccm_on,
96 .off = mcux_ccm_off,
97 .get_rate = mcux_ccm_get_subsys_rate,
98 };
99
100 DEVICE_DT_INST_DEFINE(0,
101 &mcux_ccm_init,
102 NULL,
103 NULL, NULL,
104 PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
105 &mcux_ccm_driver_api);
106
