On Thu, 2013-04-18 at 18:26 -0500, Jon Hunter wrote:
> On 04/18/2013 06:24 PM, Jon Hunter wrote:
> >> To get the values right for dt-GPMC-NAND-Config, here are the GPMC
> >> config registers for chip-select 0, they are taken from u-boot
> >> by doing "md 0x6E000060 7" on the u-boot shell:
> >>
> >> GPMC_CONFIG1: 0x6e000060: 0x00001800
> >> GPMC_CONFIG2: 0x6e000064: 0x00141400
> >> GPMC_CONFIG3: 0x6e000068: 0x00141400
> >> GPMC_CONFIG4: 0x6e00006c: 0x0F010F01
> >> GPMC_CONFIG5: 0x6e000070: 0x010C1414
> >> GPMC_CONFIG6: 0x6e000074: 0x1F0F0A80
> >> GPMC_CONFIG7: 0x6e000078: 0x00000870
>
>
> I would advise you dump the gpmc registers at the end of the gpmc probe.
> I am sure you will see something completely different to the above based
> upon your dt configuration.
Thanks to your help this is my new gpmc dt config:
&gpmc {
ranges = <0 0 0x30000000 0x1000000>;
nand@0,0 {
reg = <0 0 0x1000000>;
nand-bus-width = <16>;
ti,nand-ecc-opt = "hw";
/* no elm on omap3 */
gpmc,mux-add-data = <0>;
gpmc,device-nand;
gpmc,device-width = <2>;
gpmc,wait-pin = <0>;
gpmc,wait-monitoring-ns = <0x0>;
gpmc,burst-length= <4>;
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <0x14>;
gpmc,cs-wr-off-ns = <0x14>;
gpmc,adv-on-ns = <0>;
gpmc,adv-rd-off-ns = <0x14>;
gpmc,adv-wr-off-ns = <0x14>;
gpmc,oe-on-ns = <0x1>;
gpmc,oe-off-ns = <0xf>;
gpmc,we-on-ns = <0x1>;
gpmc,we-off-ns = <0xf>;
gpmc,rd-cycle-ns = <0x14>;
gpmc,wr-cycle-ns = <0x14>;
gpmc,access-ns = <0xc>;
gpmc,page-burst-access-ns = <0x1>;
gpmc,bus-turnaround-ns = <0x0>;
gpmc,cycle2cycle-samecsen = <0x1>;
gpmc,cycle2cycle-delay-ns = <0xa>;
gpmc,wr-data-mux-bus-ns = <0xf>;
gpmc,wr-access-ns = <0x1f>;
};
};
As suggested I added some printks to kernel gpmc-subsystem to compare
the gpmc config registers.
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: Generic OMAP3 (Flattened Device Tree), model: INCOstartec LILLY-DBB056 (DM3730)
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] OMAP3630 ES1.2 (l2cache iva neon isp 192mhz_clk )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32256
[ 0.000000] Kernel command line: console=ttyO0,115200n8 vt.global_cursor_default=0 consoleblank=0 root=/dev/nfs ip=dhcp
[ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Memory: 127MB = 127MB total
[ 0.000000] Memory: 116040k/116040k available, 15032k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc06a9fa8 (6792 kB)
[ 0.000000] .init : 0xc06aa000 - 0xc06db9ec ( 199 kB)
[ 0.000000] .data : 0xc06dc000 - 0xc073bd20 ( 384 kB)
[ 0.000000] .bss : 0xc073bd20 - 0xc0c7e414 (5386 kB)
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts
[ 0.000000] Total of 96 interrupts on 1 active controller
[ 0.000000] Clocking rate (Crystal/Core/MPU): 26.0/400/600 MHz
[ 0.000000] OMAP clockevent source: timer1 at 32768 Hz
[ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
[ 0.000000] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 0.000000] ... MAX_LOCK_DEPTH: 48
[ 0.000000] ... MAX_LOCKDEP_KEYS: 8191
[ 0.000000] ... CLASSHASH_SIZE: 4096
[ 0.000000] ... MAX_LOCKDEP_ENTRIES: 16384
[ 0.000000] ... MAX_LOCKDEP_CHAINS: 32768
[ 0.000000] ... CHAINHASH_SIZE: 16384
[ 0.000000] memory used by lock dependency info: 3695 kB
[ 0.000000] per task-struct memory footprint: 1152 bytes
[ 0.001037] Calibrating delay loop... 398.13 BogoMIPS (lpj=1990656)
[ 0.119659] pid_max: default: 4096 minimum: 301
[ 0.119964] Security Framework initialized
[ 0.120086] Mount-cache hash table entries: 512
[ 0.135314] CPU: Testing write buffer coherency: ok
[ 0.136810] Setting up static identity map for 0xc04efee8 - 0xc04eff40
[ 0.141418] devtmpfs: initialized
[ 0.197814] pinctrl core: initialized pinctrl subsystem
[ 0.201232] regulator-dummy: no parameters
[ 0.202972] NET: Registered protocol family 16
[ 0.203704] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.211700] Reprogramming SDRC clock to 400000000 Hz
[ 0.229248] pinctrl-single 48002030.pinmux: 742 pins at pa fa002030 size 1484
[ 0.231140] pinctrl-single 48002a00.pinmux: 46 pins at pa fa002a00 size 92
[ 0.234588] OMAP GPIO hardware version 2.5
[ 0.252685] platform 49022000.mcbsp: alias fck already exists
[ 0.253540] platform 49024000.mcbsp: alias fck already exists
[ 0.261749] omap-gpmc 6e000000.gpmc: GPMC revision 5.0
[ 0.262084] gpmc_write_reg(), 176,
[ 0.262115] gpmc_ch_dump_reg, 1836, GPMC_CS_CONFIG1 0x00001800
[ 0.262115] gpmc_ch_dump_reg, 1838, GPMC_CS_CONFIG2 0x00141400
[ 0.262145] gpmc_ch_dump_reg, 1840, GPMC_CS_CONFIG3 0x00141400
[ 0.262145] gpmc_ch_dump_reg, 1842, GPMC_CS_CONFIG4 0x0f010f01
[ 0.262176] gpmc_ch_dump_reg, 1844, GPMC_CS_CONFIG5 0x010c1414
[ 0.262176] gpmc_ch_dump_reg, 1846, GPMC_CS_CONFIG6 0x1f0f0a80
[ 0.262207] gpmc_ch_dump_reg, 1848, GPMC_CS_CONFIG7 0x00000870
[ 0.262207] gpmc_write_reg(), 176,
[ 0.262237] gpmc_ch_dump_reg, 1836, GPMC_CS_CONFIG1 0x00001800
[ 0.262237] gpmc_ch_dump_reg, 1838, GPMC_CS_CONFIG2 0x00141400
[ 0.262237] gpmc_ch_dump_reg, 1840, GPMC_CS_CONFIG3 0x00141400
[ 0.262268] gpmc_ch_dump_reg, 1842, GPMC_CS_CONFIG4 0x0f010f01
[ 0.262268] gpmc_ch_dump_reg, 1844, GPMC_CS_CONFIG5 0x010c1414
[ 0.262298] gpmc_ch_dump_reg, 1846, GPMC_CS_CONFIG6 0x1f0f0a80
[ 0.262298] gpmc_ch_dump_reg, 1848, GPMC_CS_CONFIG7 0x00000870
[ 0.262695] gpmc_cs_enable_mem(), 433,
[ 0.262725] gpmc_ch_dump_reg, 1836, GPMC_CS_CONFIG1 0x00001800
[ 0.262756] gpmc_ch_dump_reg, 1838, GPMC_CS_CONFIG2 0x00141400
[ 0.262756] gpmc_ch_dump_reg, 1840, GPMC_CS_CONFIG3 0x00141400
[ 0.262786] gpmc_ch_dump_reg, 1842, GPMC_CS_CONFIG4 0x0f010f01
[ 0.262786] gpmc_ch_dump_reg, 1844, GPMC_CS_CONFIG5 0x010c1414
[ 0.262817] gpmc_ch_dump_reg, 1846, GPMC_CS_CONFIG6 0x1f0f0a80
[ 0.262817] gpmc_ch_dump_reg, 1848, GPMC_CS_CONFIG7 0x00000f70
[ 0.262878] GPMC CS0: cs_on : 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 0.262908] GPMC CS0: cs_rd_off : 4 ticks, 20 ns (was 20 ticks) 20 ns
[ 0.262939] GPMC CS0: cs_wr_off : 4 ticks, 20 ns (was 20 ticks) 20 ns
[ 0.262939] GPMC CS0: adv_on : 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 0.262969] GPMC CS0: adv_rd_off: 4 ticks, 20 ns (was 20 ticks) 20 ns
[ 0.263000] GPMC CS0: adv_wr_off: 4 ticks, 20 ns (was 20 ticks) 20 ns
[ 0.263031] GPMC CS0: oe_on : 0 ticks, 0 ns (was 1 ticks) 0 ns
[ 0.263031] GPMC CS0: oe_off : 3 ticks, 15 ns (was 15 ticks) 15 ns
[ 0.263061] GPMC CS0: we_on : 0 ticks, 0 ns (was 1 ticks) 0 ns
[ 0.263092] GPMC CS0: we_off : 3 ticks, 15 ns (was 15 ticks) 15 ns
[ 0.263122] GPMC CS0: rd_cycle : 4 ticks, 20 ns (was 20 ticks) 20 ns
[ 0.263153] GPMC CS0: wr_cycle : 4 ticks, 20 ns (was 20 ticks) 20 ns
[ 0.263183] GPMC CS0: access : 3 ticks, 15 ns (was 12 ticks) 12 ns
[ 0.263183] GPMC CS0: page_burst_access: 0 ticks, 0 ns (was 1 ticks) 0 ns
[ 0.263214] GPMC CS0: bus_turnaround: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 0.263244] GPMC CS0: cycle2cycle_delay: 0 ticks, 0 ns (was 10 ticks) 0 ns
[ 0.263244] GPMC CS0: wait_monitoring: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 0.263275] GPMC CS0: clk_activation: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 0.263305] GPMC CS0: wr_data_mux_bus: 3 ticks, 15 ns (was 15 ticks) 15 ns
[ 0.263336] GPMC CS0: wr_access : 7 ticks, 35 ns (was 31 ticks) 31 ns
[ 0.263366] gpmc_read_settings_dt: page/burst-length set but not used!
[ 0.263397] gpmc_read_settings_dt: read/write wait monitoring not enabled!
[ 0.263427] gpmc_write_reg, 176,
[ 0.263427] gpmc_ch_dump_reg, 1836, GPMC_CS_CONFIG1 0x00001800
[ 0.263458] gpmc_ch_dump_reg, 1838, GPMC_CS_CONFIG2 0x00040400
[ 0.263458] gpmc_ch_dump_reg, 1840, GPMC_CS_CONFIG3 0x00040400
[ 0.263488] gpmc_ch_dump_reg, 1842, GPMC_CS_CONFIG4 0x03000300
[ 0.263488] gpmc_ch_dump_reg, 1844, GPMC_CS_CONFIG5 0x00030404
[ 0.263519] gpmc_ch_dump_reg, 1846, GPMC_CS_CONFIG6 0x07030000
[ 0.263519] gpmc_ch_dump_reg, 1848, GPMC_CS_CONFIG7 0x00000f70
[ 0.269592] No ATAGs?
[ 0.269622] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.272277] OMAP DMA hardware revision 5.0
[ 0.286621] bio: create slab <bio-0> at 0
[ 0.289093] VCC3: 3300 mV
[ 0.292144] SCSI subsystem initialized
[ 0.292755] usbcore: registered new interface driver usbfs
[ 0.292907] usbcore: registered new interface driver hub
[ 0.293395] usbcore: registered new device driver usb
[ 0.295867] omap_i2c i2c.8: bus 0 rev4.4 at 2600 kHz
[ 0.307403] twl 0-0048: PIH (irq 23) chaining IRQs 338..346
[ 0.307983] twl 0-0048: power (irq 343) chaining IRQs 346..353
[ 0.311218] VDD1: 600 <--> 1450 mV at 1200 mV
[ 0.313323] VDAC: 1800 mV
[ 0.315460] VPLL2: 1800 mV
[ 0.317535] VMMC1: 1850 <--> 3150 mV at 3000 mV
[ 0.319366] VUSB1V5: failed to apply 1500000uV constraint
[ 0.322113] twl_reg regulator-vusb1v5.24: can't register VUSB1V5, -22
[ 0.322174] twl_reg: probe of regulator-vusb1v5.24 failed with error -22
[ 0.323333] VUSB1V8: failed to apply 1800000uV constraint
[ 0.323791] twl_reg regulator-vusb1v8.25: can't register VUSB1V8, -22
[ 0.323852] twl_reg: probe of regulator-vusb1v8.25 failed with error -22
[ 0.324981] VUSB3V1: failed to apply 3100000uV constraint
[ 0.325439] twl_reg regulator-vusb3v1.26: can't register VUSB3V1, -22
[ 0.325500] twl_reg: probe of regulator-vusb3v1.26 failed with error -22
[ 0.326690] VSIM: 1800 <--> 3000 mV at 1800 mV
[ 0.329071] twl4030_gpio gpio.28: gpio (irq 338) chaining IRQs 354..371
[ 0.333282] VIO: 1800 mV
[ 0.335662] VAUX2_4030: 2800 mV
[ 0.337432] VDD2: at 1200 mV
[ 0.339569] omap_i2c i2c.9: bus 1 rev4.4 at 2600 kHz
[ 0.340850] omap_i2c i2c.10: bus 2 rev4.4 at 2600 kHz
[ 0.341430] pps_core: LinuxPPS API ver. 1 registered
[ 0.341430] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx>
[ 0.341522] PTP clock support registered
[ 0.345947] cfg80211: Calling CRDA to update world regulatory domain
[ 0.346771] Switching to clocksource 32k_counter
[ 0.375244] NET: Registered protocol family 2
[ 0.377655] TCP established hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.377868] TCP bind hash table entries: 1024 (order: 3, 36864 bytes)
[ 0.378448] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.378631] TCP: reno registered
[ 0.378662] UDP hash table entries: 128 (order: 1, 10240 bytes)
[ 0.378845] UDP-Lite hash table entries: 128 (order: 1, 10240 bytes)
[ 0.379852] NET: Registered protocol family 1
[ 0.381347] RPC: Registered named UNIX socket transport module.
[ 0.381378] RPC: Registered udp transport module.
[ 0.381408] RPC: Registered tcp transport module.
[ 0.381408] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.382232] hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver, 5 counters available
[ 0.391906] VFS: Disk quotas dquot_6.5.2
[ 0.391998] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.394653] NFS: Registering the id_resolver key type
[ 0.395172] Key type id_resolver registered
[ 0.395202] Key type id_legacy registered
[ 0.395355] fuse init (API version 7.21)
[ 0.396606] msgmni has been set to 226
[ 0.401428] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[ 0.401550] io scheduler noop registered
[ 0.401580] io scheduler deadline registered
[ 0.401641] io scheduler cfq registered (default)
[ 0.403564] OMAP DSS rev 2.0
[ 0.406097] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.412414] serial.5: ttyO0 at MMIO 0x4806a000 (irq = 88) is a OMAP UART0
[ 1.483978] console [ttyO0] enabled
[ 1.489654] serial.6: ttyO1 at MMIO 0x4806c000 (irq = 89) is a OMAP UART1
[ 1.498626] serial.7: ttyO2 at MMIO 0x49020000 (irq = 90) is a OMAP UART2
[ 1.524688] brd: module loaded
[ 1.538970] loop: module loaded
[ 1.543914] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.552215] Trying ONFI probe in 16 bits mode, aborting !
[ 1.557952] No NAND device found
[ 1.561553] No NAND device found
This is how u-boot GPMC config differs from final kernel configuration:
u-boot: GPMC_CONFIG1: 0x6e000060: 0x00001800
kernel: 0x00001800
u-boot: GPMC_CONFIG2: 0x6e000064: 0x00141400
kernel: 0x00040400
u-boot: GPMC_CONFIG3: 0x6e000068: 0x00141400
kernel: 0x00040400
u-boot: GPMC_CONFIG4: 0x6e00006c: 0x0f010f01
kernel: 0x03000300
u-boot: GPMC_CONFIG5: 0x6e000070: 0x010c1414
kernel: 0x00030404
u-boot: GPMC_CONFIG6: 0x6e000074: 0x1f0f0a80
kernel: 0x07030000
u-boot: GPMC_CONFIG7: 0x6e000078: 0x00000870
kernel: 0x00000f70
The weird thing is that after gpmc_cs_enable_mem() gpmc registers are
configured correct:
[ 0.262695] gpmc_cs_enable_mem(), 433,
[ 0.262725] gpmc_ch_dump_reg, 1836, GPMC_CS_CONFIG1 0x00001800
[ 0.262756] gpmc_ch_dump_reg, 1838, GPMC_CS_CONFIG2 0x00141400
[ 0.262756] gpmc_ch_dump_reg, 1840, GPMC_CS_CONFIG3 0x00141400
[ 0.262786] gpmc_ch_dump_reg, 1842, GPMC_CS_CONFIG4 0x0f010f01
[ 0.262786] gpmc_ch_dump_reg, 1844, GPMC_CS_CONFIG5 0x010c1414
[ 0.262817] gpmc_ch_dump_reg, 1846, GPMC_CS_CONFIG6 0x1f0f0a80
[ 0.262817] gpmc_ch_dump_reg, 1848, GPMC_CS_CONFIG7 0x00000f70
Any ideas?
-- Christoph
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