Openmoko Bug #2007: [kernel] SD voltage higher after resume

[Openmoko Public Trac]

#2007: [kernel] SD voltage higher after resume
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 Reporter:  jan      |          Owner:  openmoko-devel            
     Type:  defect   |         Status:  new                       
 Priority:  normal   |      Milestone:                            
Component:  unknown  |        Version:                            
 Severity:  normal   |       Keywords:  glamo-mci SD power voltage
Blockedby:           |   Reproducible:                            
 Blocking:           |  
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 SD card voltage is set to 2700 mV (vdd 15) while booting, after suspend
 and resume it is at 3200 mV (vdd 20) again.

 booting (with sd_max_clk set to 12500000)

 SD power -> 3200mV
 glamo-mci glamo-mci.0: powered (vdd = 20) clk: 0kHz div=255 (req: 0kHz).
 Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 20) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 20) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 20) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: Error after cmd: 0x120
 glamo-mci glamo-mci.0: Error after cmd: 0x8120
 glamo-mci glamo-mci.0: Error after cmd: 0x120
 glamo-mci glamo-mci.0: Error after cmd: 0x8120
 glamo-mci glamo-mci.0: Error after cmd: 0x120
 mmc_set_power(power_mode=2, vdd=15
 SD power -> 2700mV
 wake enabled for irq 53
 pcf50633: dev (254:0)
 pcf50633 0-0073: rtc core: registered pcf50633 as rtc0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 195kHz div=255 (req:
 195kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 12500kHz div=3 (req:
 12500kHz). Bus width=0
 glamo-mci glamo-mci.0: powered (vdd = 15) clk: 12500kHz div=3 (req:
 12500kHz). Bus width=2
 mmc0: new high speed SD card at address 07bd



 suspend -> resume

 kernel: mmc_set_power(power_mode=1, vdd=20
 kernel: SD power -> 3200mV
 kernel: glamo-mci glamo-mci.0: powered (vdd = 20) clk: 0kHz div=255 (req:
 0kHz). Bus width=0
 kernel: glamo-mci glamo-mci.0: powered (vdd = 20) clk: 195kHz div=255
 (req: 195kHz). Bus width=0
 last message repeated 4 times
 kernel: glamo-mci glamo-mci.0: powered (vdd = 20) clk: 12500kHz div=3
 (req: 12500kHz). Bus width=0
 kernel: glamo-mci glamo-mci.0: powered (vdd = 20) clk: 12500kHz div=3
 (req: 12500kHz). Bus width=2


 Linux version 2.6.24 (build at barbie) (gcc version 4.1.2) #1 PREEMPT Mon Sep
 15 11:03:56 CST 2008

 testing-om-gta02-20080915.uImage.bin kernel running on Debian system
 installed on a Kingston C02G 2GB card.

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2007>
docs.openmoko.org <http://docs.openmoko.org/trac/>
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