Hi,
I am using dm8168-evm DDR2 board and EZSDK_5_01_01_80 software.
Now I want to test the I2C speed of the board.
In sprugx8.pdf it said that "Support for standard mode (up to 100K bits/s) and fast mode (up to 400K bits/s)".
But in my test I just got 4K bits/s.
I don't know how to calculate the System clock frequency of my chip now, so I checked the code of linux kernel in psp.
In /arch/arm/mach-omap2/board-ti8168evm.c
------------------------------------------------------------------------------------------------------------------------------------------
static int __init ti816x_evm_i2c_init(void)
{
omap_register_i2c_bus(1, 100, ti816x_i2c_boardinfo0, //clkrate is 100KHz?
ARRAY_SIZE(ti816x_i2c_boardinfo0));
omap_register_i2c_bus(2, 100, ti816x_i2c_boardinfo1,
ARRAY_SIZE(ti816x_i2c_boardinfo1));
return 0;
}
----------------------------------------------------------------------------------------------------------------------------------------------
Should I change the parameters in omap_register_i2c_bus to make the I2C become faster?
Or is there any other method to deal with the problem?
Best regards,
lei
