-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Thanks Jaehoon, I have noticed that before it, but in dw_mmc driver, I won't meet this problem. As you can seen in dts, I have defined a clock source. Or the clock source what I choose is not correct? I don't know how to debug this, I don't know much about it. Actually, I don't really understand the contain in chapter 7 of datasheet. I am sorry for that. Would you like to tell me some more about it? 于 2013年11月26日 12:32, Jaehoon Chung 写道: > Hi, Randy, > > It seems a problem that controller didn't find the clock source. > Also you can see the below message. Did you check the clock > source? > >> [ 1.125000] s3c-sdhci 12550000.sdhci: failed to get io clock > > Actually, need to prevent the "null pointer dereference" for clock > in dw-mmc.c > > And If dw-mmc controller can be used, recommend to use it. dw-mmc > can use DDR mode, but sdhci can't. > > Best Regards, Jaehoon Chung > > On 11/26/2013 10:47 AM, randy wrote: 于 2013年11月26日 08:41, Tomasz > Figa 写道: >>>> On Sunday 24 of November 2013 22:18:46 Olof Johansson wrote: >>>>> Hi, >>>>> >>>>> On Sun, Nov 24, 2013 at 4:07 AM, randy >>>>> <lxr1234@xxxxxxxxxxx> wrote: >>>>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >>>>>> >>>>>> After pull the merge of 3.13-rc1, the dw_mmc-exynos will >>>>>> make the boot stock.In 3.13, it is just stocked udev in >>>>>> 3.13 and makse udev timeout but kernel report the emmc >>>>>> device is found. >>>>>> >>>>>> And in the >>>>>> Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt >>>>>> I saw that it is need to define which gpio ports that a >>>>>> emmc slot use, but when I watched others dts, they use >>>>>> pinctrl, which is correct? Here is the log and dts >>>>> >>>>> [..] >>>>> >>>>>> =======================log begin >>>>>> ============================= >>>>> [..] >>>>>> [ 0.000000] CPU EXYNOS4412 (id 0xe4412011) >>>>> >>>>> [..] >>>>> >>>>>> [ 1.095000] mmc0: no vmmc regulator found [ 1.130000] >>>>>> mmc0: SDHCI controller on samsung-hsmmc [12530000.sdhci] >>>>>> using ADMA [ 1.130000] Synopsys Designware Multimedia >>>>>> Card Interface Driver [ 1.130000] Unable to handle kernel >>>>>> NULL pointer dereference at virtual address 0000002a [ >>>>>> 1.130000] pgd = c0004000 [ 1.130000] [0000002a] >>>>>> *pgd=00000000 [ 1.135000] Internal error: Oops: 5 [#1] >>>>>> PREEMPT SMP ARM [ 1.140000] Modules linked in: [ >>>>>> 1.140000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted >>>>>> 3.13.0-rc1-00008-g584fa45-dirty #3 [ 1.150000] task: >>>>>> ef0a4000 ti: ef0a8000 task.ti: ef0a8000 [ 1.155000] PC >>>>>> is at clk_get_rate+0x18/0x5c [ 1.160000] LR is at >>>>>> clk_prepare_lock+0xc/0xd8 [ 1.165000] pc : >>>>>> [<c0319400>] lr : [<c0318864>] psr: a0000113 [ >>>>>> 1.165000] sp : ef0a9e20 ip : ee94eb40 fp : 00000000 [ >>>>>> 1.175000] r10: c0571510 r9 : ef0a8000 r8 : ef227a10 [ >>>>>> 1.180000] r7 : c043544c r6 : fffffffe r5 : ee94ead0 >>>>>> r4 : fffffffe [ 1.185000] r3 : ef0a4000 r2 : >>>>>> 00000001 r1 : 000002b9 r0 : 00000001 [ 1.195000] Flags: >>>>>> NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment >>>>>> kernel [ 1.200000] Control: 10c5387d Table: 4000404a >>>>>> DAC: 00000015 [ 1.205000] Process swapper/0 (pid: 1, >>>>>> stack limit = 0xef0a8240) [ 1.210000] Stack: >>>>>> (0xef0a9e20 to 0xef0aa000) [ 1.215000] 9e20: c0308474 >>>>>> ee9ea610 ee94ead0 c0308488 c0308474 ee9ea610 00000000 >>>>>> c030592c [ 1.225000] 9e40: ef227a10 00001000 c043544c >>>>>> c020a920 c0838b04 17d78400 ee9ea610 ef227a00 [ >>>>>> 1.235000] 9e60: ef227a10 c05d6b1c 00000000 c05d6b1c >>>>>> c05890b0 ef0a8000 c0571510 c0269448 [ 1.240000] 9e80: >>>>>> c0269430 ef227a10 c061291c c0268088 00000000 ef227a10 >>>>>> c05d6b1c ef227a44 [ 1.250000] 9ea0: 00000000 c026822c >>>>>> 00000000 c05d6b1c c02681a0 c02668a8 ef005478 ef212740 [ >>>>>> 1.255000] 9ec0: c05d6b1c ef2c7900 c05cf438 c0267864 >>>>>> c0511e38 c05d6b1c 00000006 c05d6b1c [ 1.265000] 9ee0: >>>>>> 00000006 c059575c c05df580 c026884c 00000000 c05a2e14 >>>>>> 00000006 c00088dc [ 1.275000] 9f00: c0603f70 ef163e00 >>>>>> c040e334 60000113 c05b5000 a0000113 c05b5054 c05b5050 [ >>>>>> 1.280000] 9f20: c05df580 c054ad68 c0839c96 c04247b4 >>>>>> 00000093 c0035158 c05b5054 c05a2a20 [ 1.290000] 9f40: >>>>>> c050ae2c c054a438 00000006 00000006 00000000 c05a2e14 >>>>>> 00000006 c059575c [ 1.300000] 9f60: c05df580 00000093 >>>>>> c0595768 c0571510 00000000 c0571c48 00000006 00000006 [ >>>>>> 1.305000] 9f80: c0571510 c003df68 00000000 c0403544 >>>>>> 00000000 00000000 00000000 00000000 [ 1.315000] 9fa0: >>>>>> 00000000 c040354c 00000000 c000e738 00000000 00000000 >>>>>> 00000000 00000000 [ 1.320000] 9fc0: 00000000 00000000 >>>>>> 00000000 00000000 00000000 00000000 00000000 00000000 [ >>>>>> 1.330000] 9fe0: 00000000 00000000 00000000 00000000 >>>>>> 00000013 00000000 be73efa4 ffffbffd [ 1.340000] >>>>>> [<c0319400>] (clk_get_rate+0x18/0x5c) from [<c0308488>] >>>>>> (dw_mci_exynos_setup_clock+0x14/0x2c) [ 1.350000] >>>>>> [<c0308488>] (dw_mci_exynos_setup_clock+0x14/0x2c) from >>>>>> [<c030592c>] (dw_mci_probe+0x15c/0xca4) [ 1.360000] >>>>>> [<c030592c>] (dw_mci_probe+0x15c/0xca4) from [<c0269448>] >>>>>> (platform_drv_probe+0x18/0x48) [ 1.365000] [<c0269448>] >>>>>> (platform_drv_probe+0x18/0x48) from [<c0268088>] >>>>>> (driver_probe_device+0x100/0x218) [ 1.375000] >>>>>> [<c0268088>] (driver_probe_device+0x100/0x218) from >>>>>> [<c026822c>] (__driver_attach+0x8c/0x90) [ 1.385000] >>>>>> [<c026822c>] (__driver_attach+0x8c/0x90) from >>>>>> [<c02668a8>] (bus_for_each_dev+0x54/0x88) [ 1.395000] >>>>>> [<c02668a8>] (bus_for_each_dev+0x54/0x88) from >>>>>> [<c0267864>] (bus_add_driver+0xd4/0x1d0) [ 1.405000] >>>>>> [<c0267864>] (bus_add_driver+0xd4/0x1d0) from >>>>>> [<c026884c>] (driver_register+0x78/0xf4) [ 1.415000] >>>>>> [<c026884c>] (driver_register+0x78/0xf4) from >>>>>> [<c00088dc>] (do_one_initcall+0xec/0x148) [ 1.420000] >>>>>> [<c00088dc>] (do_one_initcall+0xec/0x148) from >>>>>> [<c0571c48>] (kernel_init_freeable+0xfc/0x1c8) [ >>>>>> 1.430000] [<c0571c48>] (kernel_init_freeable+0xfc/0x1c8) >>>>>> from [<c040354c>] (kernel_init+0x8/0x110) [ 1.440000] >>>>>> [<c040354c>] (kernel_init+0x8/0x110) from [<c000e738>] >>>>>> (ret_from_fork+0x14/0x3c) [ 1.450000] Code: ebfffd18 >>>>>> e3540000 01a05004 0a000008 (e594302c) >>>>> >>>>> >>>>> Looks like a clock issue on 4412? I only have 5250 that I >>>>> boot test on, no EXYNOS4 coverage at all (I had an >>>>> Odroid-X but it wasn't useful due to the very old u-boot it >>>>> came with so I gave it away). >>>>> >>>>> Tomasz, is this something you can reproduce on 4210/4412? >>>> >>>> Nope. All of our boards (exynos4210-trats, >>>> exynos4412-trats2) are configured to use sdhci-s3c for all >>>> MMC slots[1], as at the time they got submitted to mainline, >>>> this driver was considered more reliable than dw-mmc. Not >>>> sure about today, though. >>>> >>>> [1] On Exynos4 there is one dw-mmc block and four sdhci-s3c >>>> blocks, while there are just four physical busses. Using pin >>>> control you can configure any of the four sets of pins to >>>> work either using its dedicated sdhci-s3c or the only one >>>> dw-mmc. >>>> >>>> Best regards, Tomasz >>>> >>>> -- To unsubscribe from this list: send the line "unsubscribe >>>> linux-samsung-soc" in the body of a message to >>>> majordomo@xxxxxxxxxxxxxxx More majordomo info at >>>> http://vger.kernel.org/majordomo-info.html >>>> >>>> > Well I don't think it can work this time, maybe my dts is wrong. > At this time neither emmc nor usb can work. > ==========================log begin=============================== > [ 1.035000] s3c-rtc 10070000.rtc: rtc disabled, re-enabling [ > 1.040000] s3c-rtc 10070000.rtc: rtc core: registered s3c as rtc0 [ > 1.050000] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) > initialised: dm-devel@xxxxxxxxxx [ 1.055000] sdhci: Secure > Digital Host Controller Interface driver [ 1.060000] sdhci: > Copyright(c) Pierre Ossman [ 1.065000] s3c-sdhci > 12530000.sdhci: clock source 2: mmc_busclk.2 (100000000 Hz) [ > 1.075000] s3c-sdhci 12530000.sdhci: dummy supplies not allowed [ > 1.080000] mmc0: no vqmmc regulator found [ 1.085000] s3c-sdhci > 12530000.sdhci: dummy supplies not allowed [ 1.090000] mmc0: no > vmmc regulator found [ 1.125000] mmc0: SDHCI controller on > samsung-hsmmc [12530000.sdhci] using ADMA [ 1.125000] s3c-sdhci > 12550000.sdhci: failed to get io clock [ 1.125000] s3c-sdhci: > probe of 12550000.sdhci failed with error -2 [ 1.125000] > Synopsys Designware Multimedia Card Interface Driver [ > 1.130000] usbcore: registered new interface driver usbhid [ > 1.130000] usbhid: USB HID core driver [ 1.135000] TCP: cubic > registered [ 1.145000] NET: Registered protocol family 10 [ > 1.145000] NET: Registered protocol family 17 [ 1.145000] NET: > Registered protocol family 15 [ 1.150000] Key type dns_resolver > registered [ 1.155000] Registering SWP/SWPB emulation handler [ > 1.160000] unable to find transceiver of type USB2 PHY [ 1.165000] > exynos-ehci 12580000.ehci: no platform data or transceiver defined > [ 1.175000] platform 12580000.ehci: Driver exynos-ehci requests > probe deferral [ 1.175000] mmc0: new high speed SDHC card at > address aaaa [ 1.185000] isa bounce pool size: 16 pages [ > 1.190000] mmcblk0: mmc0:aaaa SU08G 7.40 GiB [ 1.195000] s3c-rtc > 10070000.rtc: setting system clock to 2013-01-01 12:06:09 UTC > (1357041969) [ 1.205000] exynos_cpufreq_init: failed to get > resource vdd_arm [ 1.205000] mmcblk0: p1 p2 p3 p4 [ > 1.215000] unable to find transceiver of type USB2 PHY [ 1.215000] > exynos-ehci 12580000.ehci: no platform data or transceiver defined > [ 1.225000] platform 12580000.ehci: Driver exynos-ehci requests > probe deferral > > ==========================log end================================= > > =======================dts============================================== > > > /* > * Hardkernel's Exynos4412 based tiny4412 1306 board device tree > source * * Copyright (c) 2013 Tomoya Gitsufuki > <ayaka@xxxxxxxxxxxxxxxx> * * Device tree source file for > Friendyarm tiny4412 1306 board which is based on * Samsung's > Exynos4412 SoC. * * This program is free software; you can > redistribute it and/or modify * it under the terms of the GNU > General Public License version 2 as * published by the Free > Software Foundation. */ > > /dts-v1/; #include "exynos4412.dtsi" > > / { model = "Friendly Arm Tiny4412 1306 board based on Exynos4412"; > compatible = "friendlyarm,tiny4412-1306", "samsung,exynos4412"; > > memory { reg = <0x40000000 0x40000000>; }; > > chosen { bootargs ="root=/dev/mmcblk0p1 rootfstype=ext4 rw > console=ttySAC0,115200 init=/sbin/init"; }; > > leds { compatible = "gpio-leds"; led1 { label = "led1:heart"; > gpios = <&gpm4 0 1>; default-state = "on"; linux,default-trigger = > "heartbeat"; }; led2 { label = "led2:mmc0"; gpios = <&gpm4 1 1>; > default-state = "on"; linux,default-trigger = "mmc0"; }; > > }; > > regulators { compatible = "simple-bus"; #address-cells = <1>; > > vemmc_reg: regulator-0 { compatible = "regulator-fixed"; > regulator-name = "VMEM_VDD_2.8V"; regulator-min-microvolt = > <2800000>; regulator-max-microvolt = <2800000>; gpio = <&gpk0 2 0>; > enable-active-high; }; > > }; > > /* mshc@12550000 { #address-cells = <1>; #size-cells = <0>; > pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>; pinctrl-names > = "default"; status = "okay"; > > vmmc-supply = <&vemmc_reg>; clocks = <&clock 301>, <&clock 149>; > clocks-name = "dwmci", "sclk_dwmci"; clock-frequency = > <400000000>; > > num-slots = <1>; supports-highspeed; broken-cd; fifo-depth = > <0x80>; card-detect-delay = <200>; samsung,dw-mshc-sdr-timing = <2 > 3>; samsung,dw-mshc-ddr-timing = <1 2>; > > slot@0 { reg = <0>; bus-width = <8>; }; }; */ > > rtc@10070000 { status = "okay"; }; > > sdhci@12530000 { bus-width = <4>; pinctrl-0 = <&sd2_clk &sd2_cmd > &sd2_bus4 &sd2_cd>; pinctrl-names = "default"; status = "okay"; }; > > sdhci@1254000 { bus-width = <4>; pinctrl-0 = <&sd3_clk &sd3_cmd > &sd3_bus4 &sd3_cd>; pinctrl-names = "default"; status = "okay"; }; > > sdhci@12550000 { compatible = "samsung,exynos4210-sdhci"; > #address-cells = <1>; #size-cells = <0>; reg = <0x12550000 0x1000>; > interrupts = <0 77 0>; non-removable; pinctrl-0 = <&sd4_clk > &sd4_cmd &sd4_bus4 &sd4_bus8>; pinctrl-names = "default"; status = > "okay"; > > bus-width = <8>; vmmc-supply = <&vemmc_reg>; clocks = <&clock > 301>, <&clock 149>; clocks-name = "dwmci", "sclk_dwmci"; > clock-frequency = <400000000>; > > }; > > /* the usb phy of hsic0, hsic1 and otg are in the same place */ > usb_phy: otg@125B0000 { #address-cells = <1>; #size-cells = <1>; > compatible = "samsung,exynos4210-usbphy"; reg = <0x125B0000 0x100>; > ranges; > > clocks = <&clock 2>, <&clock 305>; clock-names = "xusbxti", "otg"; > usbphy-sys { /* USB device and host PHY_CONTROL registers */ reg > = <0x10020704 0x8>; }; }; > > ehci@12580000 { usb-phy = <&usb_phy>; status = "okay"; }; > ohci@12590000 { status = "okay"; }; > > > codec@13400000 { samsung,mfc-r = <0x43000000 0x800000>; > samsung,mfc-l = <0x51000000 0x800000>; status = "okay"; }; > > serial@13800000 { status = "okay"; }; > > serial@13810000 { status = "okay"; }; > > serial@13820000 { status = "okay"; }; > > serial@13830000 { status = "okay"; }; > > fixed-rate-clocks { xxti { compatible = "samsung,clock-xxti"; > clock-frequency = <0>; }; > > xusbxti { compatible = "samsung,clock-xusbxti"; clock-frequency = > <24000000>; }; }; > > i2c@13860000 { status = "okay"; samsung,i2c-sda-delay = <100>; > samsung,i2c-max-bus-freq = <200000>; > > wm8960@10 { compatible = "wlf,wm8960"; reg = <0x10>; }; }; }; >> > > -- To unsubscribe from this list: send the line "unsubscribe > linux-samsung-soc" in the body of a message to > majordomo@xxxxxxxxxxxxxxx More majordomo info at > http://vger.kernel.org/majordomo-info.html > > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJSlDj0AAoJEPb4VsMIzTziji8H/jgZfK7ZArb6kK74jb/P8vOv OIsOw301smAp83LafMd1BWzInkhZnMp+4g/uTawjWDGPw3rJOiu8Qcyr4VmI1r4h oXfcVS+p27qAVsMN+11e9fFKu2DsDwxb/aidau6OAAi5+U3h0rHTptRzIzbqbnxp 5lOV1eldrnXSRIsUTYmaPVLUcVRAD0p8zcPmOH79XghrcHdTisYA/yjFgu2mQJgE QgaDaEgwoFwXrTkg/w+fHHZFdOUHhursSzIGR8HUKirK2Sg2KaPRU+MXPf8nVY8B 1MEX7pnI+7feOK20eNEc9H8GmCph8MnjCsY+9DxwxqDeBkP31BhTVGIxK+ajmzw= =aRRx -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
