From c6457e3b8bc79a97381cf7deffa08f7c5a24f86c Mon Sep 17 00:00:00 2001
From: Sergey Lapin <slapin@ossfans.org>
Date: Thu, 5 Jun 2008 11:06:29 +0400
Subject: [PATCH] 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>
---
drivers/mtd/dataflash.c | 14 ++++++++++++++
include/dataflash.h | 1 +
2 files changed, 15 insertions(+)
diff --git a/drivers/mtd/dataflash.c b/drivers/mtd/dataflash.c
index 8247aa03b5..a092dc634f 100644
--- a/drivers/mtd/dataflash.c
+++ b/drivers/mtd/dataflash.c
@@ -54,6 +54,17 @@ int AT91F_DataflashInit (void)
&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 @@ void dataflash_print_info (void)
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;
diff --git a/include/dataflash.h b/include/dataflash.h
index f20c738686..80f0633aa9 100644
--- a/include/dataflash.h
+++ b/include/dataflash.h
@@ -137,6 +137,7 @@ struct dataflash_addr {
/*-------------------------------------------------------------------------------------------------*/
#define AT45DB161 0x2c
+#define AT45DB021 0x14
#define AT45DB321 0x34
#define AT45DB642 0x3c
#define AT45DB128 0x10
--
2.39.5