[PATCH 5/7] ARM: mxs: convert tx28 board to device tree
From: Lothar Waßmann <hidden>
Date: 2012-07-13 09:21:09
Shawn Guo writes:
Hi Lothar, On Mon, Jul 09, 2012 at 03:04:53PM +0200, Lothar Wa?mann wrote:quoted
This doesn't work at least because the pins that are used for PHY strap options need to be reconfigured for their FEC functionality after releasing the PHY reset. But even after adding the missing reconfiguration the ethernet PHY does not work.Can you please test the branch below to see if ethernet PHY works?
No. See bootlog below. The following patch is required for the kernel to build:
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig@@ -82,6 +82,7 @@ config MODULE_TX28 select MXS_HAVE_PLATFORM_MXS_MMC select MXS_HAVE_PLATFORM_MXS_PWM select MXS_HAVE_PLATFORM_RTC_STMP3XXX + select MXS_OCOTP config MODULE_M28 bool
git://git.linaro.org/people/shawnguo/linux-2.6.git mxs/dt/tx28 I hope I have addressed the issue with pin configuration there. But I'm not sure if "enet_out" clock needs to be enabled on tx28. I have enabled it in the code above. You need to remove enable_clk_enet_out call from tx28_init, if it's not needed.
ENET_CLK is required on the module.
## Booting kernel from Legacy Image at 40100000 ...
Image Name: Linux-3.5.0-rc6-next-20120712-ka
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2277008 Bytes = 2.2 MiB
Load Address: 40008000
Entry Point: 40008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0
Linux version 3.5.0-rc6-next-20120712-karo+ (lothar at ipc1) (gcc version 4.5.3 (GCC) ) #5 PREEMPT Fri Jul 13 11:06
:19 CEST 2012
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Ka-Ro electronics TX28 module
Memory policy: ECC disabled, Data cache writeback
On node 0 totalpages: 32768
free_area_init_node: node 0, pgdat c046db28, node_mem_map c04a8000
Normal zone: 256 pages used for memmap
Normal zone: 0 pages reserved
Normal zone: 32512 pages, LIFO batch:7
pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512
Kernel command line: init=/linuxrc mtdparts=gpmi-nand:128k at 0x20000(env),1m(u-boot),4m(linux),16m(rootfs),-(userfs) root=/dev/nfs nfsroot=192.168.1.225:/tftpboot/KARO/imx28-new,nolock ip=bootp debug panic=1 console=ttyAMA0,115200 ro
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 125136k/125136k available, 5936k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc0419d40 (4168 kB)
.init : 0xc041a000 - 0xc043be28 ( 136 kB)
.data : 0xc043c000 - 0xc046e540 ( 202 kB)
.bss : 0xc046e564 - 0xc04a7020 ( 227 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:304
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 4294967286ms
Console: colour dummy device 80x30
Calibrating delay loop... 226.09 BogoMIPS (lpj=1130496)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x402fc958 - 0x402fc9b0
------------[ cut here ]------------
WARNING: at /usr/local/src/arm/projects/imx28/linux-tx28-dt/kernel/workqueue.c:1217 worker_enter_idle+0x114/0x13
0()
Modules linked in:
[<c001381c>] (unwind_backtrace+0x0/0xe4) from [<c001adf8>] (warn_slowpath_common+0x4c/0x64)
[<c001adf8>] (warn_slowpath_common+0x4c/0x64) from [<c001ae28>] (warn_slowpath_null+0x18/0x1c)
[<c001ae28>] (warn_slowpath_null+0x18/0x1c) from [<c0030304>] (worker_enter_idle+0x114/0x130)
[<c0030304>] (worker_enter_idle+0x114/0x130) from [<c0030348>] (start_worker+0x28/0x34)
[<c0030348>] (start_worker+0x28/0x34) from [<c0420954>] (init_workqueues+0x144/0x2bc)
[<c0420954>] (init_workqueues+0x144/0x2bc) from [<c00088e4>] (do_one_initcall+0x9c/0x174)
[<c00088e4>] (do_one_initcall+0x9c/0x174) from [<c041a7b0>] (kernel_init+0x50/0x1b4)
[<c041a7b0>] (kernel_init+0x50/0x1b4) from [<c000f464>] (kernel_thread_exit+0x0/0x8)
---[ end trace 84ec6457efae102a ]---
devtmpfs: initialized
pinctrl core: initialized pinctrl subsystem
dummy:
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
gpiochip_add: registered GPIOs 0 to 31 on device: imx28-gpio.0
gpiochip_add: registered GPIOs 32 to 63 on device: imx28-gpio.1
gpiochip_add: registered GPIOs 64 to 95 on device: imx28-gpio.2
gpiochip_add: registered GPIOs 96 to 127 on device: imx28-gpio.3
gpiochip_add: registered GPIOs 128 to 159 on device: imx28-gpio.4
Serial: AMBA PL011 UART driver
duart: ttyAMA0 at MMIO 0x80074000 (irq = 47) is a PL011 rev2
console [ttyAMA0] enabled
bio: create slab <bio-0> at 0
mxs-dma imx28-dma-apbh: initialized
mxs-dma imx28-dma-apbx: initialized
Switching to clocksource mxs_timer
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
NetWinder Floating Point Emulator V0.97 (double precision)
NFS: Registering the id_resolver key type
Key type id_resolver registered
jffs2: version 2.2. (NAND) (SUMMARY) ?? 2001-2006 Red Hat, Inc.
msgmni has been set to 244
alg: No test for stdrng (krng)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
uart-pl011 duart: no DMA platform data
mxs-auart.1: ttyAPP1 at MMIO 0x8006c000 (irq = 113) is a mxs-auart.1
mxs-auart mxs-auart.1: Found APPUART 3.1.0
brd: module loaded
loop: module loaded
GPMI NAND driver registered. (IMX)
libphy: fec_enet_mii_bus: probed
mousedev: PS/2 mouse device common for all mice
rtc-ds1307 0-0068: SET TIME!
rtc-ds1307 0-0068: rtc core: registered ds1339 as rtc0
stmp3xxx-rtc stmp3xxx-rtc.0: rtc core: registered stmp3xxx-rtc as rtc1
Registered led device: GPIO-LED
TCP: cubic registered
NET: Registered protocol family 17
Key type dns_resolver registered
rtc-ds1307 0-0068: setting system clock to 2000-01-01 00:00:33 UTC (946684833)
eth0: no PHY, assuming direct connection to switch
libphy: PHY fixed-0:00 not found
eth0: could not attach to PHY
IP-Config: Failed to open eth0
IP-Config: No network devices available
script "uboot": global timeout
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
[<c001381c>] (unwind_backtrace+0x0/0xe4) from [<c02fa1e0>] (panic+0x90/0x1e8)
[<c02fa1e0>] (panic+0x90/0x1e8) from [<c041ac94>] (mount_block_root+0x1d4/0x230)
[<c041ac94>] (mount_block_root+0x1d4/0x230) from [<c041aee4>] (mount_root+0xd0/0xf0)
[<c041aee4>] (mount_root+0xd0/0xf0) from [<c041b054>] (prepare_namespace+0x150/0x1b0)
[<c041b054>] (prepare_namespace+0x150/0x1b0) from [<c041a8cc>] (kernel_init+0x16c/0x1b4)
[<c041a8cc>] (kernel_init+0x16c/0x1b4) from [<c000f464>] (kernel_thread_exit+0x0/0x8)
Rebooting in 1 seconds..
Lothar Wa?mann
--
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