[i2c] Do I need ucode relocation patch?

[i2c] Do I need ucode relocation patch?

[???]

Hello.

I'm running Montavista hardhat Linux kernel-2.2.14 with my custom board.

Since there is video decoder board which is connected by I2C bus with MPC860SAR on board, I have to adopt i2c device driver of Kim Jorgensen and my first attempt to write a value to i2c bus makes Linux hang.

There are many posting of I2C and SCC1 conflict, so I've searched 860 errata from Motorola web site. But my 860 is not listed anywhere on it.

The version number of MPC860SAR is "XPC860SRZP50D3 , QQFV00261 , 2K20A".
I'm using SCC1 as ethernet and SMC1 as ttyS0.

Do I need ucode relocation patch to work with i2c bus?

Thanks in advance.

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[i2c] Do I need ucode relocation patch?

[Cha Hyun Joon]

Hello.

I'm running Montavista hardhat Linux kernel-2.2.14 with my custom board.

Since there is video decoder board which is connected by I2C bus with MPC860SAR on board, I have to adopt i2c device driver of Kim Jorgensen and my first attempt to write a value to i2c bus makes Linux hang.

There are many posting of I2C and SCC1 conflict, so I've searched 860 errata from Motorola web site. But my 860 is not listed anywhere on it.

The version number of MPC860SAR is "XPC860SRZP50D3 , QQFV00261 , 2K20A".
I'm using SCC1 as ethernet and SMC1 as ttyS0.

Do I need ucode relocation patch to work with i2c bus?

Thanks in advance.

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RE: [i2c] Do I need ucode relocation patch?

[Ian Abbott]

Hi,

On Monday, December 04, 2000 5:15 PM you wrote:

> I'm using SCC1 as ethernet and SMC1 as ttyS0.
>
> Do I need ucode relocation patch to work with i2c bus?

Yes. This is because the size of the parameter area for SCC1 ethernet is
bigger than the area allocated it, so they overlap the usual I2C
parameter area. (There is a similar conflict between SCC2 ethernet and
SPI.) The relocation patch moves the I2C and SPI parameters to a new
parameter area.

Be aware that the CPM I2C commands for initializing RX and TX buffer
parameters, etc. do not work when using the relocation patch.

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RE: [i2c] Do I need ucode relocation patch?

[Tobias Otto-Adamczak]

> > I'm using SCC1 as ethernet and SMC1 as ttyS0.
> > Do I need ucode relocation patch to work with i2c bus?
>
> Yes. This is because the size of the parameter area for SCC1 ethernet is
> bigger than the area allocated it, so they overlap the usual I2C
> parameter area. (There is a similar conflict between SCC2 ethernet and
> SPI.)

There is a pdf document from Motorola with some helpful notes about that
topic:

http://www.mot.com/SPS/ADC/pps/download/8XX/i2c_spi.pdf

Ciao - Tobias


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