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Today's Topics:
1. r5191 - trunk/gta02-core/docs/ecn (wer...@docs.openmoko.org)
2. r5192 - trunk/gta02-core/docs/ecn (wer...@docs.openmoko.org)
3. r5193 - trunk/gta02-core/docs/ecn (wer...@docs.openmoko.org)
4. r5194 - trunk/gta02-core/docs/ecn (wer...@docs.openmoko.org)
5. r5195 - trunk/gta02-core/docs/ecn (wer...@docs.openmoko.org)
6. r5196 - trunk/gta02-core/docs/ecn (wer...@docs.openmoko.org)
--- Begin Message ---
Author: werner
Date: 2009-06-22 13:48:46 +0200 (Mon, 22 Jun 2009)
New Revision: 5191
Added:
trunk/gta02-core/docs/ecn/ecn0003.txt
trunk/gta02-core/docs/ecn/ecn0004.txt
trunk/gta02-core/docs/ecn/ecn0005.txt
Modified:
trunk/gta02-core/docs/ecn/STATUS
Log:
Three new ECNs:
0003 Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
0004 Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
0005 Simplify/remove BAT_ID/BATTEMP circuit (R1769)
Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS 2009-06-22 08:15:35 UTC (rev 5190)
+++ trunk/gta02-core/docs/ecn/STATUS 2009-06-22 11:48:46 UTC (rev 5191)
@@ -2,3 +2,6 @@
------- -------
---------------------------------------------------------------
0001 Editing Remove Glamo (U1801)
0002 Editing Remove NOR (U2501)
+0003 Editing Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
+0004 Editing Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
+0005 Editing Simplify/remove BAT_ID/BATTEMP circuit (R1769)
Added: trunk/gta02-core/docs/ecn/ecn0003.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0003.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0003.txt 2009-06-22 11:48:46 UTC (rev
5191)
@@ -0,0 +1 @@
+Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
Added: trunk/gta02-core/docs/ecn/ecn0004.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0004.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0004.txt 2009-06-22 11:48:46 UTC (rev
5191)
@@ -0,0 +1 @@
+Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
Added: trunk/gta02-core/docs/ecn/ecn0005.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0005.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0005.txt 2009-06-22 11:48:46 UTC (rev
5191)
@@ -0,0 +1,6 @@
+Simplify/remove BAT_ID/BATTEMP circuit (R1769)
+
+
+Since BAT_ID is used for HDQ in GTA02, the analog battery temperature
+monitor is no longer used. We can therefore remove R1769, which is NC.
+Perhaps we can also remove R1705, which is a unique component.
--- End Message ---
--- Begin Message ---
Author: werner
Date: 2009-06-22 13:59:39 +0200 (Mon, 22 Jun 2009)
New Revision: 5192
Added:
trunk/gta02-core/docs/ecn/ecn0006.txt
Modified:
trunk/gta02-core/docs/ecn/STATUS
Log:
One more ECN:
0006 Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS 2009-06-22 11:48:46 UTC (rev 5191)
+++ trunk/gta02-core/docs/ecn/STATUS 2009-06-22 11:59:39 UTC (rev 5192)
@@ -5,3 +5,4 @@
0003 Editing Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
0004 Editing Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
0005 Editing Simplify/remove BAT_ID/BATTEMP circuit (R1769)
+0006 Editing Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
Added: trunk/gta02-core/docs/ecn/ecn0006.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0006.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0006.txt 2009-06-22 11:59:39 UTC (rev
5192)
@@ -0,0 +1,11 @@
+Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
+
+
+ADAPTSNS is an input without internal pull-up or pull-down resistor.
+We should therefore not let it float. However, it's also debounced,
+so letting it float may have no detrimental effect.
+
+GTA02 provides a footprint for a pull-down resistor (R1701) but
+doesn't populate it. So there are no known issues in GTA02 with
+letting ADAPTSNS float and we could therefore remove the R1701
+footprint.
--- End Message ---
--- Begin Message ---
Author: werner
Date: 2009-06-22 14:45:02 +0200 (Mon, 22 Jun 2009)
New Revision: 5193
Added:
trunk/gta02-core/docs/ecn/ecn0007.txt
Modified:
trunk/gta02-core/docs/ecn/STATUS
trunk/gta02-core/docs/ecn/ecn0003.txt
trunk/gta02-core/docs/ecn/ecn0005.txt
trunk/gta02-core/docs/ecn/ecn0006.txt
Log:
Completed ECNs 0003, 0005, and 0006. Added ECN0007:
0007 Remove KEEPACT net and connect PMU.KEEPACT directly to IO_3V3
Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS 2009-06-22 11:59:39 UTC (rev 5192)
+++ trunk/gta02-core/docs/ecn/STATUS 2009-06-22 12:45:02 UTC (rev 5193)
@@ -2,7 +2,8 @@
------- -------
---------------------------------------------------------------
0001 Editing Remove Glamo (U1801)
0002 Editing Remove NOR (U2501)
-0003 Editing Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
+0003 Review Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
0004 Editing Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
-0005 Editing Simplify/remove BAT_ID/BATTEMP circuit (R1769)
-0006 Editing Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
+0005 Review Simplify/remove BAT_ID/BATTEMP circuit (R1769)
+0006 Review Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
+0007 Review Remove KEEPACT net and connect PMU.KEEPACT directly to IO_3V3
Modified: trunk/gta02-core/docs/ecn/ecn0003.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0003.txt 2009-06-22 11:59:39 UTC (rev
5192)
+++ trunk/gta02-core/docs/ecn/ecn0003.txt 2009-06-22 12:45:02 UTC (rev
5193)
@@ -1 +1,9 @@
Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
+
+
+The PMU's SHUTDOWN input is not used in GTA02. We could therefore
+remove R1545 (NC) and replace the 10 kOhm pull-down R1765 with a
+direct connection to ground.
+
+
+Author: Werner Almesberger <wer...@openmoko.org>
Modified: trunk/gta02-core/docs/ecn/ecn0005.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0005.txt 2009-06-22 11:59:39 UTC (rev
5192)
+++ trunk/gta02-core/docs/ecn/ecn0005.txt 2009-06-22 12:45:02 UTC (rev
5193)
@@ -3,4 +3,11 @@
Since BAT_ID is used for HDQ in GTA02, the analog battery temperature
monitor is no longer used. We can therefore remove R1769, which is NC.
-Perhaps we can also remove R1705, which is a unique component.
+
+Perhaps we can also remove R1705, which is a unique component. Neither
+Qi, u-boot, nor the kernel set MBCC7.battempena, so no attempt is made
+to measure the battery temperature or let it affect the charger state.
+It should therefore be safe to remove R1705 as well.
+
+
+Author: Werner Almesberger <wer...@openmoko.org>
Modified: trunk/gta02-core/docs/ecn/ecn0006.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0006.txt 2009-06-22 11:59:39 UTC (rev
5192)
+++ trunk/gta02-core/docs/ecn/ecn0006.txt 2009-06-22 12:45:02 UTC (rev
5193)
@@ -6,6 +6,9 @@
so letting it float may have no detrimental effect.
GTA02 provides a footprint for a pull-down resistor (R1701) but
-doesn't populate it. So there are no known issues in GTA02 with
-letting ADAPTSNS float and we could therefore remove the R1701
-footprint.
+doesn't populate it and ADAPTSNS therefore floats. There are no known
+issues in GTA02 with letting ADAPTSNS float and we could therefore
+remove the R1701 footprint.
+
+
+Author: Werner Almesberger <wer...@openmoko.org>
Added: trunk/gta02-core/docs/ecn/ecn0007.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0007.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0007.txt 2009-06-22 12:45:02 UTC (rev
5193)
@@ -0,0 +1,9 @@
+Remove KEEPACT net and connect PMU.KEEPACT directly to IO_3V3
+
+
+The PMU's KEEPACT input is not used in GTA02. We could therefore
+remove R1546 (NC) and replace the 33 kOhm pull-up R1710 with a
+direct connection to IO_3V3.
+
+
+Author: Werner Almesberger <wer...@openmoko.org>
--- End Message ---
--- Begin Message ---
Author: werner
Date: 2009-06-22 14:48:34 +0200 (Mon, 22 Jun 2009)
New Revision: 5194
Added:
trunk/gta02-core/docs/ecn/ecn0008.txt
Modified:
trunk/gta02-core/docs/ecn/STATUS
Log:
One more ECN:
0008 Remove external GPS antenna connector and circuit (CON7602)
Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS 2009-06-22 12:45:02 UTC (rev 5193)
+++ trunk/gta02-core/docs/ecn/STATUS 2009-06-22 12:48:34 UTC (rev 5194)
@@ -7,3 +7,4 @@
0005 Review Simplify/remove BAT_ID/BATTEMP circuit (R1769)
0006 Review Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
0007 Review Remove KEEPACT net and connect PMU.KEEPACT directly to IO_3V3
+0008 Editing Remove external GPS antenna connector and circuit (CON7602)
Added: trunk/gta02-core/docs/ecn/ecn0008.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0008.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0008.txt 2009-06-22 12:48:34 UTC (rev
5194)
@@ -0,0 +1 @@
+Remove external GPS antenna connector and circuit (CON7602)
--- End Message ---
--- Begin Message ---
Author: werner
Date: 2009-06-22 15:27:20 +0200 (Mon, 22 Jun 2009)
New Revision: 5195
Added:
trunk/gta02-core/docs/ecn/ecn0009.txt
trunk/gta02-core/docs/ecn/ecn0010.txt
trunk/gta02-core/docs/ecn/ecn0012.txt
trunk/gta02-core/docs/ecn/ecn0013.txt
trunk/gta02-core/docs/ecn/ecn0014.txt
trunk/gta02-core/docs/ecn/ecn0015.txt
Modified:
trunk/gta02-core/docs/ecn/README
trunk/gta02-core/docs/ecn/STATUS
trunk/gta02-core/docs/ecn/ecn0001.txt
trunk/gta02-core/docs/ecn/ecn0002.txt
trunk/gta02-core/docs/ecn/ecn0004.txt
trunk/gta02-core/docs/ecn/ecn0008.txt
Log:
Renamed state "Editing" to "Edit". Described ECN states in README.
Completed ECN 0004. Added ECNs 0009 to 0015:
0009 Remove LED transistors (Q1501 and Q1502)
0010 Remove audio amplifier (U4101)
0011 Reduce number of varistors on USB_VBUS (C4902, C4909)
0012 Add fuse to USB_VBUS
0013 Increase rated current of B4902
0014 Limit non-ESD overvoltage on USB_VBUS
0015 Remove Calypso serial interface on headset (U4401)
Modified: trunk/gta02-core/docs/ecn/README
===================================================================
--- trunk/gta02-core/docs/ecn/README 2009-06-22 12:48:34 UTC (rev 5194)
+++ trunk/gta02-core/docs/ecn/README 2009-06-22 13:27:20 UTC (rev 5195)
@@ -93,3 +93,17 @@
There should be a STATUS file similar to the one used for components.
Details to be defined.
+The current STATUS file can use the following states:
+
+- Edit: ECN is in the process of being written and not yet suitable for
+ detailed review.
+
+- Review: ECN is "finished" and open for review and/or research.
+
+- Execute: ECN is being implemented.
+
+- Defer: ECN will not be implemented in the current hardware revision
+ but may be considered for future revisions.
+
+- Cancel: ECN has been withdrawn or has been obsoleted by other
+ changes.
Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS 2009-06-22 12:48:34 UTC (rev 5194)
+++ trunk/gta02-core/docs/ecn/STATUS 2009-06-22 13:27:20 UTC (rev 5195)
@@ -1,10 +1,17 @@
Number Status Description
------- -------
---------------------------------------------------------------
-0001 Editing Remove Glamo (U1801)
-0002 Editing Remove NOR (U2501)
+0001 Edit Remove Glamo (U1801)
+0002 Edit Remove NOR (U2501)
0003 Review Remove SHUTDOWN net and connect PMU.SHUTDOWN directly to GND
-0004 Editing Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
+0004 Review Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
0005 Review Simplify/remove BAT_ID/BATTEMP circuit (R1769)
0006 Review Either remove or populate R1701 (PMU.ADAPTSNS pull-down)
0007 Review Remove KEEPACT net and connect PMU.KEEPACT directly to IO_3V3
-0008 Editing Remove external GPS antenna connector and circuit (CON7602)
+0008 Edit Remove external GPS antenna connector and circuit (CON7602)
+0009 Edit Remove LED transistors (Q1501 and Q1502)
+0010 Edit Remove audio amplifier (U4101)
+0011 Edit Reduce number of varistors on USB_VBUS (C4902, C4909)
+0012 Defer Add fuse to USB_VBUS
+0013 Defer Increase rated current of B4902
+0014 Defer Limit non-ESD overvoltage on USB_VBUS
+0015 Edit Remove Calypso serial interface on headset (U4401)
Modified: trunk/gta02-core/docs/ecn/ecn0001.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0001.txt 2009-06-22 12:48:34 UTC (rev
5194)
+++ trunk/gta02-core/docs/ecn/ecn0001.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -1 +1,13 @@
Remove Glamo (U1801)
+
+
+To do:
+- components to remove
+- reassign LCM pixel data (check voltage domain !)
+- reassign LCM controller SPI (check voltage domain !)
+- reassign SD/MMC
+- move WLAN to SPI
+- software impact of LCM pixel change on kernel
+- software impact of LCM controller SPI change on kernel
+- software impact of SD/MMC change on Qi and kernel
+- software impact of WLAN move on kernel
Modified: trunk/gta02-core/docs/ecn/ecn0002.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0002.txt 2009-06-22 12:48:34 UTC (rev
5194)
+++ trunk/gta02-core/docs/ecn/ecn0002.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -1 +1,6 @@
Remove NOR (U2501)
+
+
+To do:
+- chips to remove
+- software impact of not having NOR on Qi and kernel
Modified: trunk/gta02-core/docs/ecn/ecn0004.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0004.txt 2009-06-22 12:48:34 UTC (rev
5194)
+++ trunk/gta02-core/docs/ecn/ecn0004.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -1 +1,12 @@
Remove R1767 and R1768 and connect all PMU.EXTONx to R1766
+
+
+The PMU's inputs EXTON1, EXTON2, and EXTON3 are not used in GTA02. Each
+of them has an individual pull-up to VB_SYS. Even if EXTONx were used
+in some embedded application, one such input should be sufficient.
+
+We can therefore reduce the number of components by connecting all
+EXTONx pins to each other and letting them share a single pull-up.
+
+
+Author: Werner Almesberger <wer...@openmoko.org>
Modified: trunk/gta02-core/docs/ecn/ecn0008.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0008.txt 2009-06-22 12:48:34 UTC (rev
5194)
+++ trunk/gta02-core/docs/ecn/ecn0008.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -1 +1,7 @@
Remove external GPS antenna connector and circuit (CON7602)
+
+
+To do:
+- components to remove (includes antenna switch)
+- simplification of supply voltage circuit
+- readjust antenna-side components of RF filter
Added: trunk/gta02-core/docs/ecn/ecn0009.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0009.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0009.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -0,0 +1 @@
+Remove LED transistors (Q1501 and Q1502)
Added: trunk/gta02-core/docs/ecn/ecn0010.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0010.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0010.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -0,0 +1 @@
+Remove audio amplifier (U4101)
Added: trunk/gta02-core/docs/ecn/ecn0012.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0012.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0012.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -0,0 +1,6 @@
+Add fuse to USB_VBUS
+
+
+The GTA03-6410 design added a small fuse of USB_VBUS.
+
+To keep sourcing for gta02-core simple, we should defer this change.
Added: trunk/gta02-core/docs/ecn/ecn0013.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0013.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0013.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -0,0 +1,25 @@
+Increase rated current of B4902
+
+
+B4902 is a KarMax KLB0603K601SA that is only rated at 800 mA (if the
+"K" is to be believed. The table on the second page of [1] suggests
+even a value as low as 200 mA.)
+
+When using the wall charger, the PMU may draw up to 1000 mA. The
+effect of B4902 overheating can be dramatic, as shown in [2].
+
+Beads with a higher current rating but otherwise similar
+characteristics - including the same form factor - are readily
+available, e.g., the Murata BLM18KG601SN1D [3], which is rated at
+1.3 A.
+
+Despite the obviously incorrect dimensioning, there appears to be
+only one case where B4902 did indeed fail. To keep sourcing for
+gta02-core simple, we should therefore defer this change.
+
+[1] http://www.kmax.com.tw/doc/05_KLB_S.pdf
+[2] http://people.openmoko.org/werner/burntmoko-inside.jpg
+[3] http://search.murata.co.jp/Ceramy/image/img/PDF/ENG/L0110S0100BLM18K.pdf
+
+
+Author: Werner Almesberger <wer...@openmoko.org>
Added: trunk/gta02-core/docs/ecn/ecn0014.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0014.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0014.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -0,0 +1,7 @@
+Limit non-ESD overvoltage on USB_VBUS
+
+
+To do:
+- issue: broken power supply and such, PMU not very tolerant
+- change U4905 to better part
+- defer since it's not an emergency
Added: trunk/gta02-core/docs/ecn/ecn0015.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0015.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0015.txt 2009-06-22 13:27:20 UTC (rev
5195)
@@ -0,0 +1,5 @@
+Remove Calypso serial interface on headset (U4401)
+
+To do:
+- mixing digital and analog ain't no good
+- we don't really need it - factory could just use test points
--- End Message ---
--- Begin Message ---
Author: werner
Date: 2009-06-22 16:01:10 +0200 (Mon, 22 Jun 2009)
New Revision: 5196
Added:
trunk/gta02-core/docs/ecn/ecn0016.txt
trunk/gta02-core/docs/ecn/ecn0017.txt
Modified:
trunk/gta02-core/docs/ecn/STATUS
Log:
Added two more ECNs:
0016 Remove upper acceleration sensor (U7801)
0017 Move Bluetooth module (U2) to main PCB
Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS 2009-06-22 13:27:20 UTC (rev 5195)
+++ trunk/gta02-core/docs/ecn/STATUS 2009-06-22 14:01:10 UTC (rev 5196)
@@ -15,3 +15,5 @@
0013 Defer Increase rated current of B4902
0014 Defer Limit non-ESD overvoltage on USB_VBUS
0015 Edit Remove Calypso serial interface on headset (U4401)
+0016 Edit Remove upper acceleration sensor (U7801)
+0017 Edit Move Bluetooth module (U2) to main PCB
Added: trunk/gta02-core/docs/ecn/ecn0016.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0016.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0016.txt 2009-06-22 14:01:10 UTC (rev
5196)
@@ -0,0 +1,12 @@
+Remove upper acceleration sensor (U7801)
+
+
+Despite many claims that two acceleration sensors provide enhanced
+sensing capabilities, one year after the introduction of GTA02, no
+application seems to make use of both sensors. We can therefore
+conclude that the second sensor is of little or no practical use.
+
+To do:
+- why the upper ?
+- items to remove
+- connect both interrupts (motivation)
Added: trunk/gta02-core/docs/ecn/ecn0017.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0017.txt (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0017.txt 2009-06-22 14:01:10 UTC (rev
5196)
@@ -0,0 +1,7 @@
+Move Bluetooth module (U2) to main PCB
+
+
+To do:
+- explain FPC issues
+- good old times of GTA01Bv2:
+ http://people.openmoko.org/werner/retro/gta01-bt.jpg
--- End Message ---
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