Changeset 1115 for trunk/flash.h

Timestamp:

Jul 29, 2010 3:09:18 PM (3 years ago)

Author:

hailfinger

Message:

Add detailed status register printing and unlocking for all ATMEL AT25*
chips.

Add support for Atmel AT25DF081A and AT25DQ161.

Some chips require EWSR before WRSR, others require WREN before WRSR,
and some support both variants. Add feature_bits to select the correct
SPI command, and default to EWSR.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@…>
Tested-by: Steven Rosario
Acked-by: Uwe Hermann <uwe@…>

File:

• trunk/flash.h (modified) (2 diffs)

trunk/flash.h

@@ -70 +70 @@
 /*
  * How many different erase functions do we have per chip?
- */
-#define NUM_ERASEFUNCTIONS 5
+ * Atmel AT25FS010 has 6 different functions.
+ */
+#define NUM_ERASEFUNCTIONS 6
 
 #define FEATURE_REGISTERMAP     (1 << 0)
@@ -83 +84 @@
 #define FEATURE_ADDR_AAA        (2 << 2)
 #define FEATURE_ADDR_SHIFTED    (1 << 5)
+#define FEATURE_WRSR_EWSR       (1 << 6)
+#define FEATURE_WRSR_WREN       (1 << 7)
+#define FEATURE_WRSR_EITHER     (FEATURE_WRSR_EWSR | FEATURE_WRSR_WREN)
 
 struct flashchip {