* [U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ?
@ 2004-09-17 9:26 Sudhakar
2004-09-17 15:28 ` Scott Harper
0 siblings, 1 reply; 2+ messages in thread
From: Sudhakar @ 2004-09-17 9:26 UTC (permalink / raw)
To: u-boot
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.
--
Thanks and Regards,
Sudhakar V
GDA Technologies Ltd.
http://www.gdatech.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* [U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ?
2004-09-17 9:26 [U-Boot-Users] Regarding Local Bus Peripheral Access thru LCS Chip Selects ? Sudhakar
@ 2004-09-17 15:28 ` Scott Harper
0 siblings, 0 replies; 2+ messages in thread
From: Scott Harper @ 2004-09-17 15:28 UTC (permalink / raw)
To: u-boot
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.
^ permalink raw reply [flat|nested] 2+ messages in thread
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