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[POWERPC] Document and implement an improved flash device binding for powerpc

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This replaces the binding for flash chips in booting-without-of.txt
with an clarified and improved version.  It also makes
drivers/mtd/maps/physmap_of.c recognize this new binding.  Finally it
revises the Ebony device tree source to use the new binding as an
example.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Gibson
2007-09-07 13:23:53 +10:00
committed by Paul Mackerras
parent 3c607ce2a3
commit 2099172d61
3 changed files with 248 additions and 107 deletions
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30
arch/powerpc/boot/dts/ebony.dts
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@@ -138,13 +138,16 @@
interrupt-parent = <&UIC1>;
small-flash@0,80000 {
device_type = "rom";
compatible = "direct-mapped";
probe-type = "JEDEC";
compatible = "jedec-flash";
bank-width = <1>;
partitions = <0 80000>;
partition-names = "OpenBIOS";
reg = <0 80000 80000>;
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "OpenBIOS";
reg = <0 80000>;
read-only;
};
};
ds1743@1,0 {
@@ -154,14 +157,19 @@
};
large-flash@2,0 {
device_type = "rom";
compatible = "direct-mapped";
probe-type = "JEDEC";
compatible = "jedec-flash";
bank-width = <1>;
partitions = <0 380000
380000 80000>;
partition-names = "fs", "firmware";
reg = <2 0 400000>;
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "fs";
reg = <0 380000>;
};
partition@380000 {
label = "firmware";
reg = <380000 80000>;
};
};
ir@3,0 {