pepper: Implement Board Detection mechanism
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>
diff --git a/board/gumstix/pepper/board.h b/board/gumstix/pepper/board.h
index 0512735..a6df319 100644
--- a/board/gumstix/pepper/board.h
+++ b/board/gumstix/pepper/board.h
@@ -9,6 +9,18 @@
#ifndef _BOARD_H_
#define _BOARD_H_
+#define GUMSTIX_PEPPER 0x30000200
+#define GUMSTIX_PEPPER_DVI 0x31000200
+
+struct pepper_board_id {
+ unsigned int device_vendor;
+ unsigned char revision;
+ unsigned char content;
+ char fab_revision[8];
+ char env_var[16];
+ char en_setting[64];
+};
+
/*
* We must be able to enable uart0, for initial output. We then have a
* main pinmux function that can be overridden to enable all other pinmux that
@@ -16,4 +28,5 @@
*/
void enable_uart0_pin_mux(void);
void enable_board_pin_mux(void);
+void enable_i2c0_pin_mux(void);
#endif