am3358 u-boot stopped at gpmc_init() function

fly100

Other Parts Discussed in Thread: SYSCONFIG

hi, I am coming again. I make a new board based the starterKit board. When I try to run u-boot an the board, it stopped at the gpmc_init() int the evm.c file. In the gpmc_init() function, it stopped at this line:writel(0x00000008, &gpmc_cfg->sysconfig); I know this is configing the gpmc register,but why it bolcked at this place?thanks

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Please check if clocks to the GPMC module have been enabled beforehand.

0 fly100 over 10 years ago in reply to Biser Gatchev-XID

Intellectual 620 points

thank you, would you please tell me in detail? How to check ? where can I find the message related in the am335x TRM datasheet?

0 Ivan Matrakov over 10 years ago in reply to fly100

TI__Expert 4475 points

Hi ,

Please could you see from the TRM:
7.1.2.2 GPMC Clock and Reset Management
7.1.2.3 GPMC Signal List
but in principle GPMC works with PD_PER_L3S_GCLK clock domain.
BTW why you not find differences between official SDK release and your custom release.

BR
Ivan

0 fly100 over 10 years ago in reply to Ivan Matrakov

Intellectual 620 points

thank you, our board is same to the official..but also has some question. and I test DDR use the emulator,firstly the test failed but when connected to the board and test again, the ddr test passed. I am so confused, the hardware design is same to the official. could you help to analyze this question? thanks

0 fly100 over 10 years ago in reply to Biser Gatchev-XID

Intellectual 620 points

hi, I check the CM_PER_GPMC_CLKCTRL register' value is 2. this means the clock is enabled, is it right?thanks

0 fly100 over 10 years ago

Intellectual 620 points

can somebody help me? I need help, thanks

0 Biser Gatchev-XID over 10 years ago in reply to fly100

TI__Guru**** 393215 points

Please post what u-boot and Linux versions are you using. Also post what is your boot setting.

0 fly100 over 10 years ago in reply to Biser Gatchev-XID

Intellectual 620 points

u-boot version is u-boot-2011.09-psp04.06.00.08, the boot setting sysboot[15:0] = 0100 0010 0001 0011, I haven't use linux now, just use the u-boot. thanks

0 Ivan Matrakov over 10 years ago in reply to fly100

TI__Expert 4475 points

Hi,

You are using very old SDK 5.0. Please update your software to SDK 7.0 or upgrade your to SDK 6.0

BR
Ivan

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am3358 u-boot stopped at gpmc_init() function