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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 
     26 static inline int board_is_bone(void)
     27 {
     28 	return board_ti_is("A335BONE");
     29 }
     30 
     31 static inline int board_is_bone_lt(void)
     32 {
     33 	return board_ti_is("A335BNLT");
     34 }
     35 
     36 static inline int board_is_pb(void)
     37 {
     38 	return board_ti_is("A335PBGL");
     39 }
     40 
     41 static inline int board_is_bbg1(void)
     42 {
     43 	return board_is_bone_lt() && !strncmp(board_ti_get_rev(), "BBG1", 4);
     44 }
     45 
     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 
     51 static inline int board_is_evm_sk(void)
     52 {
     53 	return board_ti_is("A335X_SK");
     54 }
     55 
     56 static inline int board_is_idk(void)
     57 {
     58 	return !strncmp(board_ti_get_config(), "SKU#02", 6);
     59 }
     60 
     61 static inline int board_is_gp_evm(void)
     62 {
     63 	return board_ti_is("A33515BB");
     64 }
     65 
     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 
     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