[#4638] change cpufreq doesn't take effect on bf537 now
Submitted By: Mingquan Pan
Open Date
2008-11-12 05:43:25 Close Date
2008-11-19 05:57:48
Priority:
Medium Assignee:
Michael Hennerich
Status:
Closed Fixed In Release:
N/A
Found In Release:
N/A Release:
Category:
N/A Board:
N/A
Processor:
N/A Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Fixed
Uboot version or rev.:
Toolchain version or rev.:
Oct 10
App binary format:
N/A
Summary: change cpufreq doesn't take effect on bf537 now
Details:
change cpufreq doesn't take effect on bf537 from about Nov 7 on bf537.
Linux version 2.6.28-rc2-ADI-2009R1-pre-svn5608 (test@uclinux52-ad73311-lcd) (gcc version 4.1.2 (ADI svn)) #25 Mon Nov 10 14:07:24 CST 2008
console [early_BFuart0] enabled
early printk enabled on early_BFuart0
Warning: limiting memory to 56MB due to hardware anomaly 05000263
Board Memory: 64MB
Kernel Managed Memory: 64MB
Memory map:
fixedcode = 0x00000400-0x00000490
text = 0x00001000-0x0010dca0
rodata = 0x0010dca0-0x0015f27c
bss = 0x0015f280-0x0016f2fc
data = 0x0016f2fc-0x00180000
stack = 0x0017e000-0x00180000
init = 0x00180000-0x004b4000
available = 0x004b4000-0x037ff000
DMA Zone = 0x03f00000-0x04000000
Hardware Trace Active and Enabled
Reset caused by Software reset
Blackfin support (C) 2004-2008 Analog Devices, Inc.
Compiled for ADSP-BF537 Rev 0.2
Blackfin Linux support by blackfin.uclinux.org/
Processor Speed: 500 MHz core clock and 100 MHz System Clock
boot memmap: 00000000004b4000 - 00000000037ff000 (usable)
On node 0 totalpages: 14335
free_area_init_node: node 0, pgdat 0017bc24, node_mem_map 004b9000
DMA zone: 112 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 14223 pages, LIFO batch:3
Normal zone: 0 pages used for memmap
Movable zone: 0 pages used for memmap
NOMPU: setting up cplb tables for global access
Instruction Cache Enabled for CPU0
Data Cache Enabled for CPU0 (write-through)
Built 1 zonelists in Zone order, mobility grouping off. Total pages: 14223
Kernel command line: root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600 ip=10.100.4.50:10.100.4.174:10.100.4.174:255.255.255.0:BF537:eth0:off
Configuring Blackfin Priority Driven Interrupts
PID hash table entries: 256 (order: 8, 1024 bytes)
console handover: boot [early_BFuart0] -> real [ttyBF0]
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Kernel managed physical pages: 14335
Memory available: 51944k/65536k RAM, (3280k init code, 1075k kernel code, 457k data, 1024k dma, 7756k reserved)
Calibrating delay loop... 995.32 BogoMIPS (lpj=1990656)
Security Framework initialized
Mount-cache hash table entries: 512
Blackfin Scratchpad data SRAM: 4 KB
Blackfin L1 Data A SRAM: 16 KB (15 KB free)
Blackfin L1 Data B SRAM: 16 KB (16 KB free)
Blackfin L1 Instruction SRAM: 48 KB (41 KB free)
PDA for CPU0 reserved at 00160608
net_namespace: 288 bytes
NET: Registered protocol family 16
Blackfin GPIO Controller
Blackfin DMA Controller
stamp_init(): registering device resources
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
Setting up Blackfin MMR debugfs
msgmni has been set to 101
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler cfq registered
Serial: Blackfin serial driver
bfin-uart.1: ttyBF0 at MMIO 0xffc00400 (irq = 18) is a BFIN-UART
brd: module loaded
bfin_mac_mdio: probed
bfin_mac: attached PHY driver [SMSC LAN83C185] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=19)@sclk=100MHz)
bfin_mac bfin_mac.0: Blackfin on-chip Ethernet MAC driver, Version 1.1
bfin-spi bfin-spi.0: Blackfin BF5xx on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@7
rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0
bfin-wdt: initialized: timeout=20 sec (nowayout=0)
TCP cubic registered
NET: Registered protocol family 17
rtc-bfin rtc-bfin: setting system clock to 1970-01-01 02:22:15 UTC (8535)
IP-Config: Complete:
device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,
host=BF537, domain=, nis-domain=(none),
bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=
Freeing unused kernel memory: 3280k freed
dma_alloc_init: dma_page @ 0x004b0000 - 256 pages at 0x03f00000
PHY: 0:01 - Link is Up - 100/Full
root:/>
Case 1 ...PASS
Case 1 ...PASS
cd /usr/bin
root:/usr/bin> cpufreq-info
cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: bfin cpufreq
CPUs which need to switch frequency at the same time: 0
hardware limits: 250 MHz - 500 MHz
available frequency steps: 500 MHz, 250 MHz
available cpufreq governors: userspace
current policy: frequency should be within 250 MHz and 500 MHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency is 500 MHz (asserted by call to hardware).
cpufreq stats: 500 MHz:100.00%, 250 MHz:0.00%
root:/usr/bin>
Case 2 ...PASS
Case 2 ...PASS
cat /proc/cpuinfo
processor : 0
vendor_id : Analog Devices
cpu family : 0x27c8
model name : ADSP-BF537 500(MHz CCLK) 100(MHz SCLK) (mpu off)
stepping : 2
cpu MHz : 500.000/100.000
bogomips : 995.32
Calibration : 497664000 loops
cache size : 16 KB(L1 icache) 32 KB(L1 dcache-wt) 0 KB(L2 cache)
dbank-A/B : cache/cache
icache setup : 4 Sub-banks/4 Ways, 32 Lines/Way
dcache setup : 2 Super-banks/4 Sub-banks/2 Ways, 64 Lines/Way
board name : ADDS-BF537-STAMP
board memory : 65536 kB (0x00000000 -> 0x04000000)
kernel memory : 57336 kB (0x00001000 -> 0x037ff000)
root:/usr/bin>
Case 3 ...PASS
Case 3 ...PASS
cpufreq-set -f 250000
root:/usr/bin>
Case 4 ...PASS
Case 4 ...PASS
cat /proc/cpuinfo
processor : 0
vendor_id : Analog Devices
cpu family : 0x27c8
model name : ADSP-BF537 500(MHz CCLK) 100(MHz SCLK) (mpu off)
stepping : 2
cpu MHz : 500.000/100.000
bogomips : 995.32
Calibration : 497664000 loops
cache size : 16 KB(L1 icache) 32 KB(L1 dcache-wt) 0 KB(L2 cache)
dbank-A/B : cache/cache
icache setup : 4 Sub-banks/4 Ways, 32 Lines/Way
dcache setup : 2 Super-banks/4 Sub-banks/2 Ways, 64 Lines/Way
board name : ADDS-BF537-STAMP
board memory : 65536 kB (0x00000000 -> 0x04000000)
kernel memory : 57336 kB (0x00001000 -> 0x037ff000)
root:/usr/bin>
Case 5 ...FAIL
config file for kernel is attached.
Follow-ups
--- Michael Hennerich 2008-11-18 04:08:23
CPU frequency worked however /proc/cpuinfo didn't.
Fixed on trunk.
-Michael
--- Mingquan Pan 2008-11-19 05:57:48
Yes, it fixed on bf537.Close.
Files
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Duplicates
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Tags
File Name File Type File Size Posted By
config.linux.cpufreq application/octet-stream 33171 Mingquan Pan