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1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * board.h
4  *
5  * TI AM335x boards information header
6  *
7  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
8  */
9 
10 #ifndef _BOARD_H_
11 #define _BOARD_H_
12 
13 /**
14  * AM335X (EMIF_4D) EMIF REG_COS_COUNT_1, REG_COS_COUNT_2, and
15  * REG_PR_OLD_COUNT values to avoid LCDC DMA FIFO underflows and Frame
16  * Synchronization Lost errors. The values are the biggest that work
17  * reliably with offered video modes and the memory subsystem on the
18  * boards. These register have are briefly documented in "7.3.3.5.2
19  * Command Starvation" section of AM335x TRM. The REG_COS_COUNT_1 and
20  * REG_COS_COUNT_2 do not have any effect on current versions of
21  * AM335x.
22  */
23 #define EMIF_OCP_CONFIG_BEAGLEBONE_BLACK       0x00141414
24 #define EMIF_OCP_CONFIG_AM335X_EVM             0x003d3d3d
25 
board_is_bone(void)26 static inline int board_is_bone(void)
27 {
28 	return board_ti_is("A335BONE");
29 }
30 
board_is_bone_lt(void)31 static inline int board_is_bone_lt(void)
32 {
33 	return board_ti_is("A335BNLT");
34 }
35 
board_is_pb(void)36 static inline int board_is_pb(void)
37 {
38 	return board_ti_is("A335PBGL");
39 }
40 
board_is_bbg1(void)41 static inline int board_is_bbg1(void)
42 {
43 	return board_is_bone_lt() && !strncmp(board_ti_get_rev(), "BBG1", 4);
44 }
45 
board_is_beaglebonex(void)46 static inline int board_is_beaglebonex(void)
47 {
48 	return board_is_pb() || board_is_bone() || board_is_bone_lt() || board_is_bbg1();
49 }
50 
board_is_evm_sk(void)51 static inline int board_is_evm_sk(void)
52 {
53 	return board_ti_is("A335X_SK");
54 }
55 
board_is_idk(void)56 static inline int board_is_idk(void)
57 {
58 	return !strncmp(board_ti_get_config(), "SKU#02", 6);
59 }
60 
board_is_gp_evm(void)61 static inline int board_is_gp_evm(void)
62 {
63 	return board_ti_is("A33515BB");
64 }
65 
board_is_evm_15_or_later(void)66 static inline int board_is_evm_15_or_later(void)
67 {
68 	return (board_is_gp_evm() &&
69 		strncmp("1.5", board_ti_get_rev(), 3) <= 0);
70 }
71 
board_is_icev2(void)72 static inline int board_is_icev2(void)
73 {
74 	return board_ti_is("A335_ICE") && !strncmp("2", board_ti_get_rev(), 1);
75 }
76 
77 /*
78  * We have three pin mux functions that must exist.  We must be able to enable
79  * uart0, for initial output and i2c0 to read the main EEPROM.  We then have a
80  * main pinmux function that can be overridden to enable all other pinmux that
81  * is required on the board.
82  */
83 void enable_uart0_pin_mux(void);
84 void enable_uart1_pin_mux(void);
85 void enable_uart2_pin_mux(void);
86 void enable_uart3_pin_mux(void);
87 void enable_uart4_pin_mux(void);
88 void enable_uart5_pin_mux(void);
89 void enable_i2c0_pin_mux(void);
90 void enable_board_pin_mux(void);
91 #endif
92