Hello. I'm trying to bring up sdhci-s3c driver on S3C2443 SOC.
It seems to initialize correctly, but immediately after that it get
suspended by some force. This turns off all interrupts, so SD controller
doesn't work. I don't know, where suspend command comes from, but whole
system stay in working state.
I've recorded some boot log with extended verbose for a driver. It is
attached.
I want to understand, why and where does this command come from. And how
to turn it off. Now there is no suspend support working on my board, but
i don't want to turn suspend (PM runtime) off at all, because it may be
need to set it up in future.
Please, help.
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdhci s3c-sdhci.1: clock source 0: mmc_busclk.0 (133500000 Hz)
s3c-sdhci s3c-sdhci.1: clock source 2: mmc_busclk.2 (96000000 Hz)
sdhci_add_host
sdhci_clear_set_irqs clear -1 set 16711683
sdhci_clear_set_irqs clear -1 set 16711683
sdhci_set_card_detection 1
sdhci_clear_set_irqs clear 0 set 64
mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.1] using PIO
sdhci_set_card_detection 1
sdhci_clear_set_irqs clear 0 set 64
sdhci_runtime_suspend_host
[<c000e820>] (unwind_backtrace+0x0/0x12c) from [<c03948f4>] (dump_stack+0x20/0x24)
[<c03948f4>] (dump_stack+0x20/0x24) from [<c02b0a8c>] (sdhci_runtime_suspend_host+0x24/0x90)
[<c02b0a8c>] (sdhci_runtime_suspend_host+0x24/0x90) from [<c02b24a0>] (sdhci_s3c_runtime_suspend+0x24/0x48)
[<c02b24a0>] (sdhci_s3c_runtime_suspend+0x24/0x48) from [<c01f4560>] (pm_generic_runtime_suspend+0x40/0x54)
[<c01f4560>] (pm_generic_runtime_suspend+0x40/0x54) from [<c01f85c0>] (__rpm_callback+0x40/0x5c)
[<c01f85c0>] (__rpm_callback+0x40/0x5c) from [<c01f8c38>] (rpm_suspend+0x2b0/0x498)
[<c01f8c38>] (rpm_suspend+0x2b0/0x498) from [<c01f9b08>] (__pm_runtime_suspend+0x50/0x60)
[<c01f9b08>] (__pm_runtime_suspend+0x50/0x60) from [<c01f4c08>] (pm_generic_runtime_idle+0x58/0x60)
[<c01f4c08>] (pm_generic_runtime_idle+0x58/0x60) from [<c01f85c0>] (__rpm_callback+0x40/0x5c)
[<c01f85c0>] (__rpm_callback+0x40/0x5c) from [<c01f902c>] (rpm_idle+0x1a4/0x23c)
[<c01f902c>] (rpm_idle+0x1a4/0x23c) from [<c01f9180>] (__pm_runtime_idle+0x50/0x60)
[<c01f9180>] (__pm_runtime_idle+0x50/0x60) from [<c01ef91c>] (driver_probe_device+0x2f0/0x34c)
[<c01ef91c>] (driver_probe_device+0x2f0/0x34c) from [<c01ef9e4>] (__driver_attach+0x6c/0x8c)
[<c01ef9e4>] (__driver_attach+0x6c/0x8c) from [<c01edccc>] (bus_for_each_dev+0x64/0x94)
[<c01edccc>] (bus_for_each_dev+0x64/0x94) from [<c01ef260>] (driver_attach+0x28/0x30)
[<c01ef260>] (driver_attach+0x28/0x30) from [<c01eec40>] (bus_add_driver+0xd0/0x24c)
[<c01eec40>] (bus_add_driver+0xd0/0x24c) from [<c01eff9c>] (driver_register+0xac/0x13c)
[<c01eff9c>] (driver_register+0xac/0x13c) from [<c01f1110>] (platform_driver_register+0x54/0x68)
[<c01f1110>] (platform_driver_register+0x54/0x68) from [<c0517fc0>] (sdhci_s3c_driver_init+0x14/0x1c)
[<c0517fc0>] (sdhci_s3c_driver_init+0x14/0x1c) from [<c00085c8>] (do_one_initcall+0xb8/0x188)
[<c00085c8>] (do_one_initcall+0xb8/0x188) from [<c0391228>] (kernel_init+0xfc/0x2a4)
[<c0391228>] (kernel_init+0xfc/0x2a4) from [<c0009250>] (ret_from_fork+0x14/0x20)
sdhci_clear_set_irqs clear -1 set 0
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
sdhci_clear_set_irqs clear -1 set 16711683
sdhci_set_card_detection 1
sdhci_clear_set_irqs clear 0 set 64
oprofile: hardware counters not available
oprofile: using timer interrupt.
TCP: cubic registered
NET: Registered protocol family 17
rtc-ds1307 0-0068: setting system clock to 2013-04-12 11:56:23 UTC (1365767783)
ALSA device list:
No soundcards found.
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 11468KiB [1 disk] into ram disk... sdhci_runtime_suspend_host
[<c000e820>] (unwind_backtrace+0x0/0x12c) from [<c03948f4>] (dump_stack+0x20/0x24)
[<c03948f4>] (dump_stack+0x20/0x24) from [<c02b0a8c>] (sdhci_runtime_suspend_host+0x24/0x90)
[<c02b0a8c>] (sdhci_runtime_suspend_host+0x24/0x90) from [<c02b24a0>] (sdhci_s3c_runtime_suspend+0x24/0x48)
[<c02b24a0>] (sdhci_s3c_runtime_suspend+0x24/0x48) from [<c01f4560>] (pm_generic_runtime_suspend+0x40/0x54)
[<c01f4560>] (pm_generic_runtime_suspend+0x40/0x54) from [<c01f85c0>] (__rpm_callback+0x40/0x5c)
[<c01f85c0>] (__rpm_callback+0x40/0x5c) from [<c01f8c38>] (rpm_suspend+0x2b0/0x498)
[<c01f8c38>] (rpm_suspend+0x2b0/0x498) from [<c01f9c38>] (pm_runtime_work+0x80/0x9c)
[<c01f9c38>] (pm_runtime_work+0x80/0x9c) from [<c0032fc0>] (process_one_work+0x26c/0x3e8)
[<c0032fc0>] (process_one_work+0x26c/0x3e8) from [<c00349d8>] (worker_thread+0x290/0x394)
[<c00349d8>] (worker_thread+0x290/0x394) from [<c0039444>] (kthread+0xb8/0xc4)
[<c0039444>] (kthread+0xb8/0xc4) from [<c0009250>] (ret_from_fork+0x14/0x20)
sdhci_clear_set_irqs clear -1 set 0
usb 1-1: new full-speed USB device number 2 using s3c2410-ohci
sdhci_clear_set_irqs clear -1 set 16711683
sdhci_set_card_detection 1
sdhci_clear_set_irqs clear 0 set 64
sdhci_clear_set_irqs clear -1 set 16711683
sdhci_set_card_detection 1
sdhci_clear_set_irqs clear 0 set 64
sdhci_clear_set_irqs clear -1 set 16711683
sdhci_set_card_detection 1
sdhci_clear_set_irqs clear 0 set 64
usb 1-1: New USB device found, idVendor=0451, idProduct=2046
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
sdhci_runtime_suspend_host
[<c000e820>] (unwind_backtrace+0x0/0x12c) from [<c03948f4>] (dump_stack+0x20/0x24)
[<c03948f4>] (dump_stack+0x20/0x24) from [<c02b0a8c>] (sdhci_runtime_suspend_host+0x24/0x90)
[<c02b0a8c>] (sdhci_runtime_suspend_host+0x24/0x90) from [<c02b24a0>] (sdhci_s3c_runtime_suspend+0x24/0x48)
[<c02b24a0>] (sdhci_s3c_runtime_suspend+0x24/0x48) from [<c01f4560>] (pm_generic_runtime_suspend+0x40/0x54)
[<c01f4560>] (pm_generic_runtime_suspend+0x40/0x54) from [<c01f85c0>] (__rpm_callback+0x40/0x5c)
[<c01f85c0>] (__rpm_callback+0x40/0x5c) from [<c01f8c38>] (rpm_suspend+0x2b0/0x498)
[<c01f8c38>] (rpm_suspend+0x2b0/0x498) from [<c01f9c38>] (pm_runtime_work+0x80/0x9c)
[<c01f9c38>] (pm_runtime_work+0x80/0x9c) from [<c0032fc0>] (process_one_work+0x26c/0x3e8)
[<c0032fc0>] (process_one_work+0x26c/0x3e8) from [<c00349d8>] (worker_thread+0x290/0x394)
[<c00349d8>] (worker_thread+0x290/0x394) from [<c0039444>] (kthread+0xb8/0xc4)
[<c0039444>] (kthread+0xb8/0xc4) from [<c0009250>] (ret_from_fork+0x14/0x20)
sdhci_clear_set_irqs clear -1 set 0
