EE1004 - revision history

Dank at 02:19, 7 September 2022

2022-09-07T02:19:48Z

← Older revision		Revision as of 02:19, 7 September 2022
Line 38:		Line 38:
	</pre>		</pre>
	At this point, <tt>decode-dimms</tt> ought be able to pull the EE1004 information. Try using <tt>decode-dimms --side-by-side</tt> for more compact presentation.		At this point, <tt>decode-dimms</tt> ought be able to pull the EE1004 information. Try using <tt>decode-dimms --side-by-side</tt> for more compact presentation.

			==External links==
			* [https://en.wikipedia.org/wiki/Serial_presence_detect Serial presence detect] on wikipedia

Dank at 20:16, 4 September 2022

2022-09-04T20:16:11Z

← Older revision		Revision as of 20:16, 4 September 2022
Line 1:		Line 1:
	[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for [[SPD]] published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, <tt>ee1004</tt>, superseding the <tt>at24</tt> module used for AT24C02 EEPROMs. These are 512-byte devices accessed through a single I2C address; ~~SMBUS~~ controls whether the upper or lower page is accessed.		[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for [[SPD]] published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, <tt>ee1004</tt>, superseding the <tt>at24</tt> module used for AT24C02 EEPROMs. These are 512-byte devices accessed through a single I2C address; SMBus controls whether the upper or lower page is accessed.

	==Binding EE1004==		==Binding EE1004==
	Load the <tt>eeprom</tt> and <tt>ee1004</tt> modules (the former is still necessary for <tt>decode-dimms</tt> to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an ~~SMBUS~~-type I2C connection. Here, buses 0 and 1 are ~~SMBUS~~ (using the <tt>i2c-piix4</tt> module).		Load the <tt>eeprom</tt> and <tt>ee1004</tt> modules (the former is still necessary for <tt>decode-dimms</tt> to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBus-type I2C connection. Here, buses 0 and 1 are SMBus (using the <tt>i2c-piix4</tt> module).
	<pre>		<pre>
	[schwarzgerat](0) $ i2cdetect -l		[schwarzgerat](0) $ i2cdetect -l

Dank at 20:12, 4 September 2022

2022-09-04T20:12:58Z

← Older revision		Revision as of 20:12, 4 September 2022
Line 37:		Line 37:
	[schwarzgerat](1) $		[schwarzgerat](1) $
	</pre>		</pre>
	At this point, <tt>decode-dimms</tt> ought be able to pull the EE1004 information.		At this point, <tt>decode-dimms</tt> ought be able to pull the EE1004 information. Try using <tt>decode-dimms --side-by-side</tt> for more compact presentation.

Dank at 20:11, 4 September 2022

2022-09-04T20:11:58Z

← Older revision		Revision as of 20:11, 4 September 2022
Line 1:		Line 1:
	[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for [[SPD]] published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, <tt>ee1004</tt>, ~~updating~~ the <tt>at24</tt> module.		[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for [[SPD]] published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, <tt>ee1004</tt>, superseding the <tt>at24</tt> module used for AT24C02 EEPROMs. These are 512-byte devices accessed through a single I2C address; SMBUS controls whether the upper or lower page is accessed.

	==~~Reading~~ EE1004==		==Binding EE1004==
	Load the <tt>eeprom</tt> and <tt>ee1004</tt> modules (the former is still necessary for <tt>decode-dimms</tt> to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBUS-type I2C connection. Here, buses 0 and 1 are SMBUS (using the <tt>i2c-piix4</tt> module).		Load the <tt>eeprom</tt> and <tt>ee1004</tt> modules (the former is still necessary for <tt>decode-dimms</tt> to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBUS-type I2C connection. Here, buses 0 and 1 are SMBUS (using the <tt>i2c-piix4</tt> module).
	<pre>		<pre>
Line 37:		Line 37:
	[schwarzgerat](1) $		[schwarzgerat](1) $
	</pre>		</pre>
			At this point, <tt>decode-dimms</tt> ought be able to pull the EE1004 information.

Dank at 20:08, 4 September 2022

2022-09-04T20:08:09Z

@@ Line 23: / Line 23: @@
 : 70 71 72 -- 74 -- 76 --
 [schwarzgerat](0) $
 </pre>

Dank: Created page with "[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for SPD published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, `ee1004`, updating the `at24` module. ==Reading EE1004== Load the `eeprom` and `ee1004` modules (the former is still necessary for `decode-dimms` to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBUS-type I2C connecti..."

2022-09-04T20:05:37Z

Created page with "[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for SPD published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, <tt>ee1004</tt>, updating the <tt>at24</tt> module. ==Reading EE1004== Load the <tt>eeprom</tt> and <tt>ee1004</tt> modules (the former is still necessary for <tt>decode-dimms</tt> to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBUS-type I2C connecti..."

New page

[https://www.jedec.org/category/keywords/ee1004-v EE1004-v] is a JEDEC standard for [[SPD]] published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, <tt>ee1004</tt>, updating the <tt>at24</tt> module.

==Reading EE1004==
Load the <tt>eeprom</tt> and <tt>ee1004</tt> modules (the former is still necessary for <tt>decode-dimms</tt> to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBUS-type I2C connection. Here, buses 0 and 1 are SMBUS (using the <tt>i2c-piix4</tt> module).
<pre>
[schwarzgerat](0) $ i2cdetect -l
i2c-0 smbus SMBus PIIX4 adapter port 0 at 0b00 SMBus adapter
i2c-1 smbus SMBus PIIX4 adapter port 2 at 0b00 SMBus adapter
.....
[schwarzgerat](0) $
</pre>
Let's take a look across bus 0:
<pre>
[schwarzgerat](0) $ i2cdetect -y 0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 08 09 -- -- 0c -- -- --
10: 10 11 -- 13 14 15 -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- 27 28 -- -- -- -- -- -- --
30: 30 31 -- -- 34 35 -- 37 -- -- 3a -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- 4a -- -- -- -- --
50: UU UU UU UU UU UU UU UU -- -- -- -- -- -- -- --
60: -- -- 62 63 64 -- -- -- 68 69 -- -- 6c -- -- --
70: 70 71 72 -- 74 -- 76 --
[schwarzgerat](0) $
</pre>