[U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ?
Hi all,
I'm working in a MPC 8540 based board where the Local Bus Chip Selects [ LCS1 - LCS 7 ] are used to connect variuos peripherals such as NPU,CPLD etc.
To access the devices thru Uboot , What are the changes to be done ?
I have configured the BRn/ORn Settings and I treid to access the devices by reading a Read Only Register.But when i try to probe i could find any chip select Assertion.
Is there any configuration to be done to start using the Chip selects ?
If anyone have some idea please share some info to me.
Don't forget to setup the TLB1_MAS register and the LAW registers.
Look at init.S in the MPC8540ads for examples. I had to change this for my board.
Scott
On Friday 17 September 2004 02:26, Sudhakar wrote:
Hi all,
I'm working in a MPC 8540 based board where the Local Bus Chip Selects [ LCS1 - LCS 7 ] are used to connect variuos peripherals such as NPU,CPLD etc.
To access the devices thru Uboot , What are the changes to be done ?
I have configured the BRn/ORn Settings and I treid to access the devices by reading a Read Only Register.But when i try to probe i could find any chip select Assertion.
Is there any configuration to be done to start using the Chip selects ?
If anyone have some idea please share some info to me.
participants (2)
-
Scott Harper -
Sudhakar