DataFlash AT45DB021 support

Some boards based on AT91SAM926X-EK use smaller DF chips to keep bootstrap, u-boot and its environment, using NAND or other external storage for kernel and rootfs. This patch adds support for small 1024x263 chip. Signed-off-by: Sergey Lapin <slapin@ossfans.org>

DataFlash AT45DB021 support
Some boards based on AT91SAM926X-EK use smaller DF chips to keep bootstrap, u-boot and its environment, using NAND or other external storage for kernel and rootfs. This patch adds support for small 1024x263 chip. Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Sergey Lapin · Jean-Christophe PLAGNIOL-VILLARD
1 parent 4109df6f75
Showing 2 changed files with 15 additions and 0 deletions Side-by-side Diff
drivers/mtd/dataflash.c
include/dataflash.h
@@ -54,6 +54,17 @@
 				&dataflash_info[i].Desc);
  
 		switch (dfcode) {
+		case AT45DB021:
+			dataflash_info[i].Device.pages_number = 1024;
+			dataflash_info[i].Device.pages_size = 263;
+			dataflash_info[i].Device.page_offset = 9;
+			dataflash_info[i].Device.byte_mask = 0x300;
+			dataflash_info[i].Device.cs = cs[i].cs;
+			dataflash_info[i].Desc.DataFlash_state = IDLE;
+			dataflash_info[i].logical_address = cs[i].addr;
+			dataflash_info[i].id = dfcode;
+			found[i] += dfcode;;
+			break;
 		case AT45DB161:
 			dataflash_info[i].Device.pages_number = 4096;
 			dataflash_info[i].Device.pages_size = 528;
@@ -178,6 +189,9 @@
 		if (dataflash_info[i].id != 0) {
 			printf("DataFlash:");
 			switch (dataflash_info[i].id) {
+			case AT45DB021:
+				printf("AT45DB021\n");
+				break;
 			case AT45DB161:
 				printf("AT45DB161\n");
 				break;
@@ -137,6 +137,7 @@
 /*-------------------------------------------------------------------------------------------------*/
  
 #define AT45DB161	0x2c
+#define AT45DB021	0x14
 #define AT45DB321	0x34
 #define AT45DB642	0x3c
 #define AT45DB128	0x10
...	...	@@ -54,6 +54,17 @@
54	54	&dataflash_info[i].Desc);
55	55
56	56	switch (dfcode) {
	57	+ case AT45DB021:
	58	+ dataflash_info[i].Device.pages_number = 1024;
	59	+ dataflash_info[i].Device.pages_size = 263;
	60	+ dataflash_info[i].Device.page_offset = 9;
	61	+ dataflash_info[i].Device.byte_mask = 0x300;
	62	+ dataflash_info[i].Device.cs = cs[i].cs;
	63	+ dataflash_info[i].Desc.DataFlash_state = IDLE;
	64	+ dataflash_info[i].logical_address = cs[i].addr;
	65	+ dataflash_info[i].id = dfcode;
	66	+ found[i] += dfcode;;
	67	+ break;
57	68	case AT45DB161:
58	69	dataflash_info[i].Device.pages_number = 4096;
59	70	dataflash_info[i].Device.pages_size = 528;
...	...	@@ -178,6 +189,9 @@
178	189	if (dataflash_info[i].id != 0) {
179	190	printf("DataFlash:");
180	191	switch (dataflash_info[i].id) {
	192	+ case AT45DB021:
	193	+ printf("AT45DB021\n");
	194	+ break;
181	195	case AT45DB161:
182	196	printf("AT45DB161\n");
183	197	break;
...	...	@@ -137,6 +137,7 @@
137	137	/-------------------------------------------------------------------------------------------------/
138	138
139	139	#define AT45DB161 0x2c
	140	+#define AT45DB021 0x14
140	141	#define AT45DB321 0x34
141	142	#define AT45DB642 0x3c
142	143	#define AT45DB128 0x10