Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors

Openmoko Public Trac bugs at docs.openmoko.org
Mon Aug 4 16:17:40 CEST 2008


#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
 Reporter:  beni     |        Owner:  openmoko-devel
     Type:  defect   |       Status:  new           
 Priority:  normal   |    Milestone:                
Component:  unknown  |      Version:                
 Severity:  normal   |   Resolution:                
 Keywords:           |     Blocking:                
Blockedby:           |  
---------------------+------------------------------------------------------

Comment(by beni):

 I added a new menu option to boot with reduced clock, so i am able to
 boot with both default and modified state:

 ----
 setenv menu_9 Boot with reduced SD clock: setenv bootargs
 glamo_mci.sd_max_clk=10000000 \${bootargs_base} \${mtdparts}\; nand read.e
 0x32000000 kernel 0x200000\; bootm 0x32000000
 ----

 This gives:
 root at beni_om-gta02v5:~# cat /proc/cmdline
 glamo_mci.sd_max_clk=10000000 rootfstype=jffs2 root=/dev/mtdblock6
 console=ttySAC2,115200 console=tty0 loglevel=8 regular_boot mtdparts
 =physmap-
 flash:-(nor);neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x0f6a0000(rootfs)


 Writing speed is:
 root at beni_om-gta02v5:~# date +%s; dd if=/dev/zero of=/media/card/bigfile
 count=200 bs=1M; date +%s;
 1217866226
 200+0 records in
 200+0 records out
 1217866331
 => 1.904761904761904762

 Reading speed is:
 root at beni_om-gta02v5:~# date +%s; dd if=/media/card/bigfile of=/dev/null
 count=200 bs=1M; date +%s;
 1217866403
 200+0 records in
 200+0 records out
 1217866494
 => 2.197802197802197802


 Where did you got the number of 10000000 from?
 Other numbers to test?

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:7>
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