board/ti/am335x/board.h

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