gpio debounce

Hi Mike,

Do you have normal kernel boot up when you revert back your gpio debaunce changes?

Can you provide us these changes?

BR
Pavel

Hi,

Following is the log:

Uncompressing Linux... done, booting the kernel.
Linux version 2.6.37+ (mike@tango-charlie) (gcc version 4.7.4 (crosstool-NG 1.21.0) ) #13 Wed Apr 20 15:13:44 BST 2016
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: ti8148evm
ti81xx_reserve: ### Reserved DDR region @fbf00000
reserved size = 52428800 at 0x0
FB: Reserving 52428800 bytes SDRAM for VRAM
Memory policy: ECC disabled, Data cache writeback
OMAP chip is TI8148 3.0
SRAM: Mapped pa 0x402f1000 to va 0xfe400000 size: 0xf000
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 391040
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 364MB 270MB 908MB 1MB = 1543MB total
Memory: 1561308k/1561308k available, 70948k reserved, 832512K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xc6800000 - 0xf8000000 ( 792 MB)
lowmem : 0x80000000 - 0xc6000000 (1120 MB)
pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
modules : 0x7f000000 - 0x7fe00000 ( 14 MB)
.init : 0x80008000 - 0x80030000 ( 160 kB)
.text : 0x80030000 - 0x8047e000 (4408 kB)
.data : 0x8047e000 - 0x804c1600 ( 270 kB)
SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:375
omap_hwmod: gpio1: softreset failed (waited 10000 usec)
omap_hwmod: gpio2: softreset failed (waited 10000 usec)
omap_hwmod: gpio3: softreset failed (waited 10000 usec)
omap_hwmod: gpio4: softreset failed (waited 10000 usec)
IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
Total of 128 interrupts on 1 active controller
GPMC revision 6.0
Trying to install interrupt handler for IRQ368
Trying to install interrupt handler for IRQ369
Trying to install interrupt handler for IRQ370
Trying to install interrupt handler for IRQ371
Trying to install interrupt handler for IRQ372
Trying to install interrupt handler for IRQ373
Trying to install interrupt handler for IRQ374
Trying to install type control for IRQ375
Trying to set irq flags for IRQ375
OMAP clockevent source: GPTIMER1 at 20000000 Hz
Console: colour dummy device 80x30
Calibrating delay loop... 999.42 BogoMIPS (lpj=4997120)
pid_max: default: 32768 minimum: 301
Security Framework initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
TI81XX: Map 0xfbf00000 to 0xfe500000 for dram barrier
TI81XX: Map 0x40300000 to 0xfe600000 for sram barrier
omap_voltage_early_init: voltage driver support not added
regulator: core version 0.5
regulator: dummy:
NET: Registered protocol family 16
omap_voltage_domain_lookup: Voltage driver init not yet happened.Faulting!
omap_voltage_add_dev: VDD specified does not exist!
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
Cannot clk_get ck_32
Debugfs: Only enabling/disabling deep sleep and wakeup timer is supported now
registered ti81xx_vpss device
registered ti81xx on-chip HDMI device
NSS Crypto DMA hardware revision 1.9 @ IRQ 116
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
USBSS revision 4ea2080b
registerd cppi-dma Intr @ IRQ 17
Cppi41 Init Done
omap_i2c omap_i2c.3: bus 3 rev4.0 at 100 kHz
Advanced Linux Sound Architecture Driver Version 1.0.23.
Switching to clocksource gp timer
musb-hdrc: version 6.0, host, debug=0
musb-hdrc musb-hdrc.0: dma type: dma-cppi41
MUSB controller-0 revision 4ea20800
usb2phy: computed values rxcalib(15)DACs(30 14 15)
usb2phy: override computed values rxcalib(15)DACs(30 14 15)
usb2phy_config: musb(0) rxcalib done, rxcalib read value 6f6f5d7e
musb-hdrc musb-hdrc.0: MUSB HDRC host driver
musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
musb-hdrc musb-hdrc.0: USB Host mode controller at c681e000 using DMA, IRQ 18
musb-hdrc musb-hdrc.1: dma type: dma-cppi41
MUSB controller-1 revision 4ea20800
usb2phy: computed values rxcalib(15)DACs(29 13 15)
usb2phy: override computed values rxcalib(15)DACs(29 13 15)
usb2phy_config: musb(1) rxcalib done, rxcalib read value 6f6edb7e
musb-hdrc musb-hdrc.1: MUSB HDRC host driver
musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
musb-hdrc musb-hdrc.1: USB Host mode controller at c682a800 using DMA, IRQ 19
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
UDP hash table entries: 512 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 512 (order: 1, 8192 bytes)
NET: Registered protocol family 1
NetWinder Floating Point Emulator V0.97 (double precision)
PMU: registered new PMU device of type 0
omap-iommu omap-iommu.0: ducati registered
omap-iommu omap-iommu.1: sys registered
highmem bounce pool size: 64 pages
msgmni has been set to 1423
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
omap_uart.0: ttyO0 at MMIO 0x48020000 (irq = 72) is a OMAP UART0
console [ttyO0] enabled
omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
brd: module loaded
loop: module loaded
omap2-nand driver initializing
ONFI param page 0 valid
ONFI flash detected
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xdc (Micron NAND 512MiB 3,3V 8-bit)
omap2-nand: detected x8 NAND flash
Creating 1 MTD partitions on "omap2-nand.0":
0x000000000000-0x000000020000 : "U-Boot-min-1"
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver dm9601
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
mice: PS/2 mouse device common for all mice
input: gpio-keys as /devices/platform/gpio-keys/input/input0
input: pwm-beeper as /devices/platform/pwm-beeper/input/input1
omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
i2c /dev entries driver
OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
nss_aes_mod_init: loading NSS AES driver
nss-aes nss-aes: NSS AES hw accel rev: 3.2 (context 0 @0x41140000)
nss-aes nss-aes: NSS AES hw accel rev: 3.2 (context 1 @0x41141000)
nss-aes nss-aes: NSS AES hw accel rev: 3.2 (context 2 @0x411a0000)
nss-aes nss-aes: NSS AES hw accel rev: 3.2 (context 3 @0x411a1000)
nss_aes_probe: probe() done
nss_des_mod_init: loading NSS DES driver
nss-des nss-des: NSS DES hw accel rev: 2.2 (context 0 @0x41160000)
nss-des nss-des: NSS DES hw accel rev: 2.2 (context 1 @0x41161000)
nss_des_probe: probe() done
nss_sham_mod_init: loading NSS SHA/MD5 driver
nss-sham nss-sham: NSS SHA/MD5 hw accel rev: 4.03 (context 0 @0x41100000)
nss-sham nss-sham: NSS SHA/MD5 hw accel rev: 4.03 (context 1 @0x41101000)
nss-sham nss-sham: NSS SHA/MD5 hw accel rev: 4.03 (context 2 @0x411c0000)
nss-sham nss-sham: NSS SHA/MD5 hw accel rev: 4.03 (context 3 @0x411c1000)
nss_sham_probe: probe() done
notify_init : notify drivercreated for remote proc id 2 at physical Address 0xbf900000
mmc0: card claims to support voltages below the defined range. These will be ignored.
mmc0: queuing unknown CIS tuple 0x91 (3 bytes)
mmc0: new high speed SDIO card at address 0001
asoc: adau1373-aif1 <-> davinci-mcasp.2 mapping ok
ALSA device list:
#0: TI81XX EVM
GACT probability NOT on
Mirror/redirect action on
u32 classifier
Performance counters on
input device check on
Actions configured
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
ctnetlink v0.93: registering with nfnetlink.
ip_tables: (C) 2000-2006 Netfilter Core Team
arp_tables: (C) 2002 David S. Miller
TCP cubic registered
NET: Registered protocol family 10
NET: Registered protocol family 17
Bridge firewalling registered
Ebtables v2.0 registered
Registering the dns_resolver key type
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
omap_voltage_late_init: Voltage driver support not added
Power Management for TI81XX.
omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
Waiting for root device /dev/mmcblk0p2...
mmc1: new SDHC card at address b368
mmcblk0: mmc1:b368 FFFFF 3.74 GiB
mmcblk0: p1 p2
EXT4-fs (mmcblk0p2): recovery complete
EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
VFS: Mounted root (ext4 filesystem) on device 179:2.
devtmpfs: mounted
Freeing init memory: 160K
<30>systemd[1]: systemd 204 running in system mode. (-PAM +LIBWRAP -AUDIT -SELINUX +IMA +SYSVINIT -LIBCRYPTSETUP -GCRYPT +ACL -XZ)


changes which make it crash is just setting the debounce_interval to 30 (gpio_keys_button)

Thanks,
Mike

mike A said:

Following is the log

Is this the log when you do not apply the gpio debounce settings?

mike A said:

changes which make it crash is just setting the debounce_interval to 30 (gpio_keys_button)

In which file you make this change? Can you share the code?

Regards,
Pavel

Mike,

Make sure also the GPIO interface and debounce clocks are active/on:

./rtc_divider_ck/audio_prcm_clkin_ck/sysclk18_ck/gpio1_dbck/rate ==> 32768
./rtc_divider_ck/audio_prcm_clkin_ck/sysclk18_ck/gpio234_dbck/gpio2_dbck/rate ==> 32768
./rtc_divider_ck/audio_prcm_clkin_ck/sysclk18_ck/gpio234_dbck/gpio3_dbck/rate ==> 32768
./rtc_divider_ck/audio_prcm_clkin_ck/sysclk18_ck/gpio234_dbck/gpio4_dbck/rate ==> 32768
./rtc_divider_ck/audio_prcm_clkin_ck/sysclk18_ck/gpio234_dbck/rate ==> 32768

./osc0_clkin_ck/l3_dpll_clkin_ck/l3_dpll_ck/sysclk4_ck/sysclk6_ck/gpio1_ick/rate ==> 100000000
./osc0_clkin_ck/l3_dpll_clkin_ck/l3_dpll_ck/sysclk4_ck/sysclk6_ck/gpio234_ick/gpio2_ick/rate ==> 100000000
./osc0_clkin_ck/l3_dpll_clkin_ck/l3_dpll_ck/sysclk4_ck/sysclk6_ck/gpio234_ick/gpio3_ick/rate ==> 100000000
./osc0_clkin_ck/l3_dpll_clkin_ck/l3_dpll_ck/sysclk4_ck/sysclk6_ck/gpio234_ick/gpio4_ick/rate ==> 100000000
./osc0_clkin_ck/l3_dpll_clkin_ck/l3_dpll_ck/sysclk4_ck/sysclk6_ck/gpio234_ick/rate ==> 100000000

See the below wiki for more info regarding clock management:
processors.wiki.ti.com/.../TI81XX_PSP_PM_CLOCK_FRAMEWORK_User_Guide

Which GPIO exactly you are using (GPIO0, GPIO1, GPIO2 or GPIO3)?

Regards,
Pavel

Hi,

Mike,had you solve the problem?What is the reason?

BR,

vefone