X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=doc%2FREADME.ebony;h=a8479a4799dc2748cfb9db611e3a36d200f102c4;hb=17dd883c5b76bdade0f7a48f2eb02d918a5ebef9;hp=a395a4996219a372825914206bc4fd8935c8552b;hpb=6d0f6bcf337c5261c08fabe12982178c2c489d76;p=oweals%2Fu-boot.git diff --git a/doc/README.ebony b/doc/README.ebony index a395a49962..a8479a4799 100644 --- a/doc/README.ebony +++ b/doc/README.ebony @@ -31,17 +31,17 @@ J42: open All others are factory default. -I2C iprobe +I2C probe ===================== The i2c utilities have been tested on both Rev B. and Rev C. and look good. The CONFIG_SYS_I2C_NOPROBES macro is defined to prevent probing the CDCV850 clock controller at address 0x69 (since reading it causes the i2c implementation to misbehave. The output of -iprobe should look like this (assuming you are only using a single +'i2c probe' should look like this (assuming you are only using a single SO-DIMM: -=> iprobe +=> i2c probe Valid chip addresses: 50 53 54 Excluded chip addresses: 69 @@ -63,13 +63,13 @@ J42 - strapped This will select the default sys0 and sys1 settings (the serial eeproms are not used). Then power up the board and fix the serial -eeprom using the imm command. Here are the values I currently +eeprom using the 'i2c mm' command. Here are the values I currently use: -=> imd 50 0 10 +=> i2c md 50 0 10 0000: bf a2 04 01 ae 94 11 00 00 00 00 00 00 00 00 00 ................ -=> imd 54 0 10 +=> i2c md 54 0 10 0000: 8f b3 24 01 4d 14 11 00 00 00 00 00 00 00 00 00 ..$.M........... Once you have the eeproms set correctly change the @@ -83,8 +83,8 @@ the SPD to initialize the DDR SDRAM control registers. So if the SPD eeprom is corrupted, U-Boot will never get into ram. Here's how I got out of this situation: -0. First, _before_ playing with the i2c utilities, do an iprobe, then -use imd to capture the various device contents to a file. Some day +0. First, _before_ playing with the i2c utilities, do an 'i2c probe', then +use 'i2c md' to capture the various device contents to a file. Some day you may be glad you did this ... trust me :-). Otherwise try the following: @@ -100,12 +100,12 @@ settings without using the SPD eeprom. 3. Load the new U-Boot image and reboot ebony. -4. Repair the SPD eeprom using the imm command. Here's the eeprom +4. Repair the SPD eeprom using the 'i2c mm' command. Here's the eeprom contents that work with the default SO-DIMM that comes with the ebony board (micron 8VDDT164AG-265A1). Note: these are probably _not_ the factory settings ... but they work. -=> imd 53 0 10 80 +=> i2c md 53 0 10 80 0000: 80 08 07 0c 0a 01 40 00 04 75 75 00 80 08 00 01 ......@..uu..... 0010: 0e 04 0c 01 02 20 00 a0 75 00 00 50 3c 50 2d 20 ..... ..u..P