Hi Nobuhiro Iwamatsu, Now I'm porting USB on board T-Engine(SH7727) - My configure following : #define CONFIG_CMD_USB #define CONFIG_USB_OHCI_NEW 1 #define CONFIG_USB_STORAGE 1 #define CFG_USB_OHCI_REGS_BASE 0x04000400 #define CFG_USB_OHCI_SLOT_NAME "s3c2400" #define CFG_USB_OHCI_MAX_ROOT_PORTS 15 #define CONFIG_DOS_PARTITION 1 #define CONFIG_SYS_CLK_FREQ 33333333 #define TMU_CLK_DIVIDER 4 /* 4 (default), 16, 64, 256 or 1024 */ #define CFG_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER) - And in lowlevel_init.S, I change USB clock following: UCLKCR_A: .long 0xA40A0008 UCLKCR_D: .long 0xA5C0 mov.l UCLKCR_A,r1 mov.l UCLKCR_D,r0 mov.w r0,@r1 - When I'm starting board with above configue, I see the led of USB device is blinking. Then I run command "usb start", the led turn off and u-boot don't find any USB device, with following logs: DEBUG: OHCI controller usb-s3c2400 state DEBUG: control: 0x0000008f HCFS=operational IE PLE CBSR=3 DEBUG: cmdstatus: 0x00000000 SOC=0 DEBUG: intrstatus: 0x00000004 SF DEBUG: intrenable: 0x00000053 RHSC UE WDH SO DEBUG: hcca frame #0019 DEBUG: roothub.a: 02001202 POTPGT=2 NOCP NPS NDP=2 DEBUG: roothub.b: 00000000 PPCM=0000 DR=0000 DEBUG: roothub.status: 00000000 DEBUG: roothub.portstatus [0] = 0x00000100 PPS DEBUG: roothub.portstatus [1] = 0x00010101 CSC PPS CCS scanning bus for devices... New Device 0 usb_control_msg: request: 0x6, requesttype: 0x80 value 0x100 index 0x0 length 0x8 INFO: submit_control_msg DEBUG: SUB URB:[ 42] dev: 0,ep: 0-I,type:CTRL,len:0/8 stat:0x80000000 DEBUG: SUB(rh) URB:[ 45] dev: 0,ep: 0-I,type:CTRL,len:0/8 stat:0x80000000 INFO: Root-Hub: adr: 0 cmd(8): 00000680 0001 0000 0800 DEBUG: roothub.a: 02001202 POTPGT=2 NOCP NPS NDP=2 DEBUG: roothub.b: 00000000 PPCM=0000 DR=0000 DEBUG: roothub.status: 00000000 DEBUG: roothub.portstatus [0] = 0x00000100 PPS DEBUG: roothub.portstatus [1] = 0x00010101 CSC PPS CCS DEBUG: RET(rh) URB:[ 56] dev: 0,ep: 0-I,type:CTRL,len:0/8 stat:0x2 usb_ohci.c: cmd(8): 80 06 01 00 00 00 00 08 usb_ohci.c: data(0/8): USB device not responding, giving up (status=2) 0 USB Device(s) found scanning bus for storage devices... 0 Storage Device (s) found - I don't know what is wrong in my configure, I think the CONFIG_SYS_CLK_FREQ and CFG_HZ is incorrect and I can't start USB device, and clock which I control in lowlevel_init.S following: FRQCR_A: .long 0xA415FF80 /* FRQCR Address(Frequency Control Register) */ FRQCR_D: .long 0x1103 /* I:B:P=8:4:2 */ Can you help me about this problem and tell me about any other wrong things in my configure? why the led turn off when I run command "usb start"?
thanks
Nobuhiro Iwamatsu wrote:
Hi,
2008/8/20 thaoth thaoth@cybersoft-vn.com:
Hi Nobuhiro Iwamatsu,
- Clock frequency of board.
#define CONFIG_SYS_CLK_FREQ 33333333 #define TMU_CLK_DIVIDER 4 /* 4 (default), 16, 64, 256 or 1024 */ #define CFG_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
I don't understand how to set CONFIG_SYS_CLK_FREQ value. From T-Engine support, they said clock frequency of board is 144MHz.
Please set outside clock to CONFIG_SYS_CLK_FREQ.
- Cross compiler tool chain : GCC vs T-Engine toolchain
There are two tool chains
http://www.superh-linux.org/archive/bsp/sh7721_se/toolchain_sh3_gcc4.2.tar.g... support elf32-sh-linux target.
- Tool chain from T-Engine forum support elf32-sh-tkernel
Using both cross compilers, we could turn on LED on debug board by setting correct value LED_A and LED_B value.
- ICE or JTAG debugger and LED debugging.
I don't have these debug tools, and so hard for debugging. T-Engine/SH7727 DevKit has debug board with 8 LEDs. I could turn on/off these LEDs by setting correct value to 0xA1600000 memory. But C function turn on/off LED cannot work. For example
int cpu_init(void) { // Turn off LED 1 to notify cpu_init is called. outw(0x00 & 0xFF, 0xa1600000); return 0; }
I don't know why it isn't called?
I think that cpu_init is not carried out. I think that u-boot stopped on lowlevel_init function.
Would you please give me your ideas? Thank you a lot.
I will get T-Engine board ...... Please wait.
Best regards, Nobuhiro _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot