diff options
Diffstat (limited to 'recipes/u-boot/u-boot-git/beagleboard/0007-OMAP3-detect-expansion-board-type-version-using-eepr.patch')
| -rw-r--r-- | recipes/u-boot/u-boot-git/beagleboard/0007-OMAP3-detect-expansion-board-type-version-using-eepr.patch | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/recipes/u-boot/u-boot-git/beagleboard/0007-OMAP3-detect-expansion-board-type-version-using-eepr.patch b/recipes/u-boot/u-boot-git/beagleboard/0007-OMAP3-detect-expansion-board-type-version-using-eepr.patch new file mode 100644 index 0000000000..13da414cd0 --- /dev/null +++ b/recipes/u-boot/u-boot-git/beagleboard/0007-OMAP3-detect-expansion-board-type-version-using-eepr.patch @@ -0,0 +1,129 @@ +From 129dccd106ea5862f3ff25c368102bf656472f7f Mon Sep 17 00:00:00 2001 +From: Steve Sakoman <steve@sakoman.com> +Date: Fri, 12 Feb 2010 12:17:48 -0800 +Subject: [PATCH 07/37] OMAP3: detect expansion board type/version using eeprom contents + +--- + board/overo/overo.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++ + 1 files changed, 92 insertions(+), 0 deletions(-) + +diff --git a/board/overo/overo.c b/board/overo/overo.c +index 3df1a12..2838a1f 100644 +--- a/board/overo/overo.c ++++ b/board/overo/overo.c +@@ -39,6 +39,31 @@ + #include <asm/mach-types.h> + #include "overo.h" + ++static struct { ++ unsigned int device_vendor; ++ unsigned char revision; ++ unsigned char content; ++ unsigned char data[6]; ++} expansion_config; ++ ++#define TWL4030_I2C_BUS 0 ++ ++#define EXPANSION_EEPROM_I2C_BUS 2 ++#define EXPANSION_EEPROM_I2C_ADDRESS 0x50 ++ ++#define GUMSTIX_VENDORID 0x0200 ++ ++#define GUMSTIX_SUMMIT 0x01000200 ++#define GUMSTIX_TOBI 0x02000200 ++#define GUMSTIX_TOBI_DUO 0x03000200 ++#define GUMSTIX_PALO35 0x04000200 ++#define GUMSTIX_PALO43 0x05000200 ++#define GUMSTIX_CHESTNUT43 0x06000200 ++#define GUMSTIX_PINTO 0x07000200 ++ ++#define GUMSTIX_NO_EEPROM 0xfffffffe ++#define GUMSTIX_UNKNOWN 0xffffffff ++ + #if defined(CONFIG_CMD_NET) + static void setup_net_chip(void); + #endif +@@ -130,6 +155,31 @@ int get_board_revision(void) { + } + + /* ++ * Routine: get_expansion_id ++ * Description: This function checks for expansion board by checking I2C ++ * bus 2 for the availability of an AT24C01B serial EEPROM. ++ * returns the device_vendor field from the EEPROM ++ */ ++unsigned int get_expansion_id(void) ++{ ++ i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); ++ ++ /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */ ++ if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) ++ return GUMSTIX_NO_EEPROM; ++ ++ /* read configuration data */ ++ i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, ++ sizeof(expansion_config)); ++ ++ if ( (expansion_config.device_vendor & 0xffff) != GUMSTIX_VENDORID ) ++ return GUMSTIX_UNKNOWN; ++ else ++ return expansion_config.device_vendor; ++} ++ ++ ++/* + * Routine: misc_init_r + * Description: Configure board specific parts + */ +@@ -156,6 +206,48 @@ int misc_init_r(void) + printf(" unsupported\n"); + } + ++ switch (get_expansion_id()) { ++ case GUMSTIX_SUMMIT: ++ printf("Recognized Summit expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ setenv("defaultdisplay", "dvi"); ++ break; ++ case GUMSTIX_TOBI: ++ printf("Recognized Tobi expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ setenv("defaultdisplay", "dvi"); ++ break; ++ case GUMSTIX_TOBI_DUO: ++ printf("Recognized Tobi Duo expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ break; ++ case GUMSTIX_PALO35: ++ printf("Recognized Palo 35 expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ setenv("defaultdisplay", "lcd35"); ++ break; ++ case GUMSTIX_PALO43: ++ printf("Recognized Palo 43 expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ setenv("defaultdisplay", "lcd43"); ++ break; ++ case GUMSTIX_CHESTNUT43: ++ printf("Recognized Chestnut 43 expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ setenv("defaultdisplay", "lcd43"); ++ break; ++ case GUMSTIX_PINTO: ++ printf("Recognized Pinto expansion board (rev %d %s)\n", ++ expansion_config.revision, expansion_config.data); ++ break; ++ case GUMSTIX_NO_EEPROM: ++ printf("No EEPROM on expansion board\n"); ++ break; ++ case GUMSTIX_UNKNOWN: ++ printf("Unrecognized expansion board\n"); ++ } ++ ++ i2c_set_bus_num(TWL4030_I2C_BUS); + twl4030_power_init(); + twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); + +-- +1.6.6.1 + |