From 87a2da4e2cb5d750945e2402ab9a7c8f609e7f28 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineering.com>
Date: Fri, 4 May 2018 16:22:40 -0500
Subject: Add Atmel AT25DF021A support

---
 flashchips.c | 39 +++++++++++++++++++++++++++++++++++++++
 flashchips.h |  1 +
 2 files changed, 40 insertions(+)

diff --git a/flashchips.c b/flashchips.c
index abbc083..e883062 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -1521,6 +1521,45 @@ const struct flashchip flashchips[] = {
 		.voltage	= {2700, 3600}, /* 2.3-3.6V & 2.7-3.6V models available */
 	},
 
+	{
+		.vendor		= "Atmel",
+		.name		= "AT25DF021A",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= ATMEL_ID,
+		.model_id	= ATMEL_AT25DF021A,
+		.total_size	= 256,
+		.page_size	= 256,
+		/* OTP: 128B total, 64B pre-programmed; read 0x77; write 0x9B */
+		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP,
+		.tested		= TEST_UNTESTED,
+		.probe		= probe_spi_rdid,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {4 * 1024, 64} },
+				.block_erase = spi_block_erase_20,
+			}, {
+				.eraseblocks = { {32 * 1024, 8} },
+				.block_erase = spi_block_erase_52,
+			}, {
+				.eraseblocks = { {64 * 1024, 4} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = spi_block_erase_60,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			}
+		},
+		.printlock	= spi_prettyprint_status_register_at25df,
+		.unlock		= spi_disable_blockprotect_at2x_global_unprotect,
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read,
+		.voltage	= {2700, 3600}, /* 2.3-3.6V & 2.7-3.6V models available */
+	},
+
 	{
 		.vendor		= "Atmel",
 		.name		= "AT25DF041A",
diff --git a/flashchips.h b/flashchips.h
index 7171a62..d5c80cb 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -132,6 +132,7 @@
 
 #define ATMEL_ID		0x1F	/* Atmel (now used by Adesto) */
 #define ATMEL_AT25DF021		0x4300
+#define ATMEL_AT25DF021A	0x4301
 #define ATMEL_AT25DF041A	0x4401
 #define ATMEL_AT25DF081		0x4502	/* EDI 0x00. AT25DL081 has same ID + EDI 0x0100 */
 #define ATMEL_AT25DF081A	0x4501	/* Yes, 81A has a lower number than 81 */
-- 
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