Thread (9 messages) flat view 9 messages, 4 authors, 2007-05-16

Re: Small fixes for the Ebony device tree

From: David Gibson <hidden>
Date: 2007-05-15 01:17:04

On Mon, May 14, 2007 at 02:59:31PM +0200, Segher Boessenkool wrote:
quoted
-			i-cache-size = <0>;
-			d-cache-size = <0>;
+			i-cache-size = <2000000>; /* 32 kB */
+			d-cache-size = <2000000>; /* 32 kB */
That's 32MB, not 32kB.  Better fix this :-)
Duh.  Fixed.
quoted
 	UIC0: interrupt-controller0 {
quoted
 	UIC1: interrupt-controller1 {
It's a shame you can't use unit addresses for these since
you use "dcr-reg" instead of "reg".  Oh well.
quoted
 		SDRAM0: sdram {
-			device_type = "memory-controller";
 			compatible = "ibm,sdram-440gp", "ibm,sdram";
Maybe rename the node to "memory-controller"?
Hmm, yeah, I guess so.
quoted
+		SRAM0: sram {
+			compatible = "ibm,sram440gp";
+			dcr-reg = <020 8 00a 1>;
+		};
Is this thing _only_ addressable over DCRs?  Weird.
Well... the control registers are certainly DCR only.  I guess there's
the actual SRAM itself, though whether this belongs in this node, or
elsewhere isn't immediately clear.  I haven't yet investigated how the
SRAM is mapped (it depends on DIP switch settings) so I'm certainly
not considering this node complete yet.
quoted
 		MAL0: mcmal {
-			device_type = "mcmal-dma";
+			device_type = "dma-controller";
 			compatible = "ibm,mcmal-440gp", "ibm,mcmal";
Remove "device_type", change name to "dma-controller"?
Don't really want to remove the device_type, because the MAL driver
looks for it at present.  Don't really want to change the name, since
that might encourage confusion with the other (more conventional) DMA
controller.
quoted
 			EBC0: ebc {
-				device_type = "ibm,ebc";
 				compatible = "ibm,ebc-440gp";
You forgot "ibm,ebc" here.
Hmm.. yeah, I guess.

Revised patch coming shortly.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson
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