1 /*
2 * Copyright (c) 2018-2019, STMicroelectronics - All Rights Reserved
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #ifndef STM32MP1_CLK_H
8 #define STM32MP1_CLK_H
9
10 #include <arch_helpers.h>
11
12 enum stm32mp_osc_id {
13 _HSI,
14 _HSE,
15 _CSI,
16 _LSI,
17 _LSE,
18 _I2S_CKIN,
19 NB_OSC,
20 _UNKNOWN_OSC_ID = 0xFF
21 };
22
23 extern const char *stm32mp_osc_node_label[NB_OSC];
24
25 int stm32mp1_clk_probe(void);
26 int stm32mp1_clk_init(void);
27
28 bool stm32mp1_rcc_is_secure(void);
29 bool stm32mp1_rcc_is_mckprot(void);
30
31 void __stm32mp1_clk_enable(unsigned long id, bool caller_is_secure);
32 void __stm32mp1_clk_disable(unsigned long id, bool caller_is_secure);
33
stm32mp1_clk_enable_non_secure(unsigned long id)34 static inline void stm32mp1_clk_enable_non_secure(unsigned long id)
35 {
36 __stm32mp1_clk_enable(id, false);
37 }
38
stm32mp1_clk_enable_secure(unsigned long id)39 static inline void stm32mp1_clk_enable_secure(unsigned long id)
40 {
41 __stm32mp1_clk_enable(id, true);
42 }
43
stm32mp1_clk_disable_non_secure(unsigned long id)44 static inline void stm32mp1_clk_disable_non_secure(unsigned long id)
45 {
46 __stm32mp1_clk_disable(id, false);
47 }
48
stm32mp1_clk_disable_secure(unsigned long id)49 static inline void stm32mp1_clk_disable_secure(unsigned long id)
50 {
51 __stm32mp1_clk_disable(id, true);
52 }
53
54 unsigned int stm32mp1_clk_get_refcount(unsigned long id);
55
56 /* SMP protection on RCC registers access */
57 void stm32mp1_clk_rcc_regs_lock(void);
58 void stm32mp1_clk_rcc_regs_unlock(void);
59
60 void stm32mp1_stgen_increment(unsigned long long offset_in_ms);
61
62 #ifdef STM32MP_SHARED_RESOURCES
63 void stm32mp1_register_clock_parents_secure(unsigned long id);
64 #endif
65 #endif /* STM32MP1_CLK_H */
66