UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Observer jtyx
Observer
987 Views
Registered: ‎08-17-2010

problem with hdmi2.0 dp159 driver

Jump to solution

In the DP159 driver file <dp159.c>,  Two chip addresses are defined as follows:

 

#define I2C_DP159_ZOMBIE_ADDR 0x2C
#define I2C_DP159_ES_ADDR 0x5E

 

But from sn65dp159 datasheet, I can only find 8-bit wide address definition : 0xB6 0xB8 0xBA 0xBC

 

I think the I2C_DP159_ES_ADDR  should be corresponding to 0xBC,so why the driver difine this address as ES address? And  Where is I2C_DP159_ZOMBIE_ADDR  address coming from?

 

Best Regards

 

 

 

 

0 Kudos
1 Solution

Accepted Solutions
Xilinx Employee
Xilinx Employee
927 Views
Registered: ‎08-02-2007

Re: problem with hdmi2.0 dp159 driver

Jump to solution

@jtyx

 

 

ZOMBIE is the very old DP159, which is even before the engineering sample. At that time, TI called it ZOMBIE.

 

ES should refer to engineer sample.

4 Replies
Explorer
Explorer
956 Views
Registered: ‎06-13-2012

Re: problem with hdmi2.0 dp159 driver

Jump to solution

Hi @jtyx,

 

xilinx i2c uses 7 bit address, so address is defined as 0x5E as the 8th bit of i2c comunication is the R/W bit.

The address defined is shifted right by 1 digit, if you shift back left 1 the result is (0x5E * 2) = 0xBC that's what you're looking for.

Observer jtyx
Observer
945 Views
Registered: ‎08-17-2010

Re: problem with hdmi2.0 dp159 driver

Jump to solution

yes ,i know the difference between 7bit address and 8bit address.

 

My question is what does ES mean (I2C_DP159_ES_ADDR ), not engineer sample?

 

And what does ZOMBIE mean , where does  0x2C come from?

 

Thanks

0 Kudos
Xilinx Employee
Xilinx Employee
928 Views
Registered: ‎08-02-2007

Re: problem with hdmi2.0 dp159 driver

Jump to solution

@jtyx

 

 

ZOMBIE is the very old DP159, which is even before the engineering sample. At that time, TI called it ZOMBIE.

 

ES should refer to engineer sample.

Observer jtyx
Observer
890 Views
Registered: ‎08-17-2010

Re: problem with hdmi2.0 dp159 driver

Jump to solution
Now i konw, thanks a lot!
0 Kudos