[PATCH] update MTD OF implementation

Vitaly Wool vitalywool at gmail.com
Wed Dec 6 23:36:27 EST 2006


Hello folks,

the patch below updates the powerpc part of the MTD OF implementation with the new field probe-type and also fixes the typos/build warning for rom.c.
So therefore it in a way supersedes the patch from Geoff which can be seen at http://ozlabs.org/pipermail/linuxppc-dev/2006-December/028831.html.

 Documentation/powerpc/booting-without-of.txt |   19 +++++++++++--------
 arch/powerpc/sysdev/rom.c                    |    1 +
 2 files changed, 12 insertions(+), 8 deletions(-)

Signed-off-by: Vitaly Wool <vwool at ru.mvista.com>

diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index b3bd366..3399427 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1703,29 +1703,32 @@ platforms are moved over to use the flat
     Required properties:
 
      - device_type : has to be "rom"
-     - compatible : Should specify what this ROM device is compatible with
-       (i.e. "onenand"). Currently, this is most likely to be "direct-mapped"
-       (which corresponds to the MTD physmap mapping driver).
-     - regs : Offset and length of the register set (or memory mapping) for
+     - compatible : Should specify what this flash device is compatible with.
+       Currently, this is most likely to be "direct-mapped" (which
+       corresponds to the MTD physmap mapping driver).
+     - reg : Offset and length of the register set (or memory mapping) for
        the device.
+     - bank-width : Width of the flash data bus in bytes. Required
+       for the NOR flashes (compatible == "direct-mapped" and others) ONLY.
 
     Recommended properties :
 
-     - bank-width : Width of the flash data bus in bytes. Required
-       for the NOR flashes (compatible == "direct-mapped" and others) ONLY.
      - partitions : Several pairs of 32-bit values where the first value is
        partition's offset from the start of the device and the second one is
        partition size in bytes with LSB used to signify a read only
-       partititon (so, the parition size should always be an even number).
+       partition (so, the parition size should always be an even number).
      - partition-names : The list of concatenated zero terminated strings
        representing the partition names.
+     - probe-type : The type of probe which should be done for the chip
+       (JEDEC vs CFI actually). Valid ONLY for NOR flashes.
 
    Example:
 
  	flash at ff000000 {
  		device_type = "rom";
  		compatible = "direct-mapped";
- 		regs = <ff000000 01000000>;
+ 		probe-type = "CFI";
+ 		reg = <ff000000 01000000>;
  		bank-width = <4>;
  		partitions = <00000000 00f80000
  			      00f80000 00080001>;
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
diff --git a/arch/powerpc/sysdev/rom.c b/arch/powerpc/sysdev/rom.c
index bf5b3f1..c855a3b 100644
--- a/arch/powerpc/sysdev/rom.c
+++ b/arch/powerpc/sysdev/rom.c
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <asm/of_device.h>
+#include <asm/of_platform.h>
 
 static int __init powerpc_flash_init(void)
 {



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