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: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > 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>; > }; > }; > }; > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iQEcBAEBAgAGBQJSk/2uAAoJEPb4VsMIzTzirLAH/0H3n2a8s8qvizr+YOOCnLvr > iiK21Mh/Gi9wLgvpU16oEDiOP5p2da7TUKI7AnIGY48SnBrB+E0C2UVHVn7L/4aX > cputqr5mEswV3RUOaEg7s1HHbXp249LJ4Z8IByxesO4lVCRGVTcz+i121uDGKrH4 > OoybBl/YuDACo3D1AZShNq+m8lLIAyEUT3UOEPJdxsa1V/Zwf4MdQbY1YMC6Twqs > kmLPCgKlS7wKeFvpYG/cmWZEG/fFlBiCey3mmJDy6DK+YC6Mq1WEFJEU4zWec3kI > cJwyA20U+GC5cz7CZfDjkLhMinXnOhz8oP9RGCKlKrz22DlEJd4/mXnHwEK1c1o= > =GHoW > -----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
