[PATCH] [PowerPC] MPC8272ADS: fix device tree for 8 MB flash size
From: Wolfgang Denk <hidden>
Date: 2009-05-12 19:06:41
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
The current device tree for the MPC8272ADS assumes a mapping of 32 MB of NOR flash at 0xFE00.0000, while there are actually only 8 MB on the boards, mapped at 0xFF80.0000. When booting an uImage with such a device tree, the kernel crashes because 0xFE00.0000 is not mapped. Also introduce aliases for serial[01] and ethernet[01]. Signed-off-by: Wolfgang Denk <redacted> Cc: Scott Wood <redacted> cc: Kumar Gala <redacted> --- I am not really sure what the typical flash size on MPC8272ADS boards is. The board I used for testing is marked as "Prototype", so it may not be the release configuration. On the other hand, the manual also says 8 MB, Vitaly Borduk confirms 8 MB on his board, too, and Scott Wood eventually tested only with cuImage which fixes up the localbus mappings, thus eventually concealing the issue. I'm posting this as reference in case the 8 MB should turn out to be correct. -- wd arch/powerpc/boot/dts/mpc8272ads.dts | 19 +++++++++++++------ 1 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/boot/dts/mpc8272ads.dts b/arch/powerpc/boot/dts/mpc8272ads.dts
index 2a1929a..60f3327 100644
--- a/arch/powerpc/boot/dts/mpc8272ads.dts
+++ b/arch/powerpc/boot/dts/mpc8272ads.dts@@ -17,6 +17,13 @@ #address-cells = <1>; #size-cells = <1>; + aliases { + ethernet0 = ð0; + ethernet1 = ð1; + serial0 = &scc1; + serial1 = &scc4; + }; + cpus { #address-cells = <1>; #size-cells = <0>;
@@ -46,13 +53,13 @@ #size-cells = <1>; reg = <0xf0010100 0x40>; - ranges = <0x0 0x0 0xfe000000 0x2000000 + ranges = <0x0 0x0 0xff800000 0x00800000 0x1 0x0 0xf4500000 0x8000 0x3 0x0 0xf8200000 0x8000>; flash@0,0 { compatible = "jedec-flash"; - reg = <0x0 0x0 0x2000000>; + reg = <0x0 0x0 0x00800000>; bank-width = <4>; device-width = <1>; };
@@ -144,7 +151,7 @@ reg = <0x119f0 0x10 0x115f0 0x10>; }; - serial@11a00 { + scc1: serial@11a00 { device_type = "serial"; compatible = "fsl,mpc8272-scc-uart", "fsl,cpm2-scc-uart";
@@ -155,7 +162,7 @@ fsl,cpm-command = <0x800000>; }; - serial@11a60 { + scc4: serial@11a60 { device_type = "serial"; compatible = "fsl,mpc8272-scc-uart", "fsl,cpm2-scc-uart";
@@ -192,7 +199,7 @@ }; }; - ethernet@11300 { + eth0: ethernet@11300 { device_type = "network"; compatible = "fsl,mpc8272-fcc-enet", "fsl,cpm2-fcc-enet";
@@ -205,7 +212,7 @@ fsl,cpm-command = <0x12000300>; }; - ethernet@11320 { + eth1: ethernet@11320 { device_type = "network"; compatible = "fsl,mpc8272-fcc-enet", "fsl,cpm2-fcc-enet";
--
1.6.0.6