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![Adam YH Lee](/assets/img/avatar_default.png)
AM335x-based 'Gumstix Pepper' SBCs and variants use different types of RAM (DDR2 vs DDR3 with DDR3 being the default). Detect the board type by reading the factory-programmed EEPROM [1] and use this to select any runtime boot options such as RAM type. [1] http://elinux.org/BeagleBoardPinMux#List_of_Vendor_and_Device_IDs Signed-off-by: Adam YH Lee <adam.yh.lee@gmail.com> Signed-off-by: Ash Charles <ashcharles@gmail.com>
33 lines
752 B
C
33 lines
752 B
C
/*
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* Gumstix Pepper and AM335x-based boards information header
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*
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* Copyright (C) 2014, Gumstix, Inc. - http://www.gumstix.com/
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _BOARD_H_
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#define _BOARD_H_
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#define GUMSTIX_PEPPER 0x30000200
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#define GUMSTIX_PEPPER_DVI 0x31000200
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struct pepper_board_id {
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unsigned int device_vendor;
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unsigned char revision;
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unsigned char content;
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char fab_revision[8];
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char env_var[16];
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char en_setting[64];
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};
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/*
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* We must be able to enable uart0, for initial output. We then have a
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* main pinmux function that can be overridden to enable all other pinmux that
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* is required on the board.
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*/
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void enable_uart0_pin_mux(void);
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void enable_board_pin_mux(void);
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void enable_i2c0_pin_mux(void);
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#endif
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