[PATCH] Add M25P20-old

[Kyösti Mälkki]

This older revision (?) of M25P20 chip was not detected correctly.
Similar case was with M25P40 detection.

I have misplaced my narrow SOIC-8 adapter and cannot reproduce the
test logs at the moment.

Signed-off-by: Kyösti Mälkki 
---
 flashchips.c | 27 +++++++++++++++++++++++++++
 flashchips.h |  1 +
 2 files changed, 28 insertions(+)

diff --git a/flashchips.c b/flashchips.c
index d4ab1be..7321e6c 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -8327,6 +8327,33 @@ const struct flashchip flashchips[] = {
    },

{
+		.vendor		= "ST",
+		.name		= "M25P20-old",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= 0, /* Not used. */
+		.model_id	= ST_M25P20_RES,
+		.total_size	= 256,
+		.page_size	= 256,
+		.feature_bits	= FEATURE_WRSR_WREN,
+		.tested		= TEST_OK_PREW,
+		.probe		= probe_spi_res1,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {64 * 1024, 4} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			}
+		},
+		.unlock		= spi_disable_blockprotect,
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read,
+	},
+
+	{
    	.vendor		= "ST", /* Numonyx */
    	.name		= "M25P40",
    	.bustype	= BUS_SPI,
diff --git a/flashchips.h b/flashchips.h
index 1a0696f..c4c72ba 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -572,6 +572,7 @@
 #define ST_M25P10A		0x2011
 #define ST_M25P10_RES		0x10	/* Same code as M25P05. */
 #define ST_M25P20		0x2012
+#define ST_M25P20_RES		0x11
 #define ST_M25P40		0x2013
 #define ST_M25P40_RES		0x12
 #define ST_M25P80		0x2014

[Stefan Tauner]

On Sat, 23 Feb 2013 13:28:05 +0200
Kyösti Mälkki  wrote:
> This older revision (?) of M25P20 chip was not detected correctly.
> Similar case was with M25P40 detection.
>
> I have misplaced my narrow SOIC-8 adapter and cannot reproduce the
> test logs at the moment.
>
> Signed-off-by: Kyösti Mälkki

Acked-by: Stefan Tauner 
Thanks, I have added a few more details and committed it in r1652.