Hi. I added support for IS25LP016 by copying the configuration from IS25LP064 and modifying it. I'm not sure if the feature_bits are set correctly, but writing, reading and erasing works fine.

Ondrej Hennel

From af04e4f19ff01084be6b4bbb69cf1bdb7513cf67 Mon Sep 17 00:00:00 2001
From: Ondrej Hennel <ondrej.hennel@gmail.com>
Date: Thu, 9 Sep 2021 14:24:36 +0200
Subject: [PATCH] add support for IS25LP016

Signed-off-by: Ondrej Hennel <ondrej.hennel@gmail.com>
---
flashchips.c | 41 +++++++++++++++++++++++++++++++++++++++++
flashchips.h | 1 +
2 files changed, 42 insertions(+)

diff --git a/flashchips.c b/flashchips.c
index 3187a49..467e55d 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -7301,6 +7301,47 @@ const struct flashchip flashchips[] = {
.voltage = {4500, 5500},
},

+ {
+ .vendor = "ISSI",
+ .name = "IS25LP016",
+ .bustype = BUS_SPI,
+ .manufacture_id = ISSI_ID_SPI,
+ .model_id = ISSI_IS25LP016,
+ .total_size = 2048,
+ .page_size = 256,
+ /* OTP: 1024B total; read 0x48; write 0x42 */
+ .feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP,
+ .tested = TEST_UNTESTED,
+ .probe = probe_spi_rdid,
+ .probe_timing = TIMING_ZERO,
+ .block_erasers =
+ {
+ {
+ .eraseblocks = { {4 * 1024, 512} },
+ .block_erase = spi_block_erase_20,
+ }, {
+ .eraseblocks = { {4 * 1024, 512} },
+ .block_erase = spi_block_erase_d7,
+ }, {
+ .eraseblocks = { {32 * 1024, 64} },
+ .block_erase = spi_block_erase_52,
+ }, {
+ .eraseblocks = { {64 * 1024, 32} },
+ .block_erase = spi_block_erase_d8,
+ }, {
+ .eraseblocks = { {2 * 1024 * 1024, 1} },
+ .block_erase = spi_block_erase_60,
+ }, {
+ .eraseblocks = { {2 * 1024 * 1024, 1} },
+ .block_erase = spi_block_erase_c7,
+ }
+ },
+ .unlock = spi_disable_blockprotect,
+ .write = spi_chip_write_256,
+ .read = spi_chip_read,
+ .voltage = {2300, 3600},
+ },
+
{
.vendor = "ISSI",
.name = "IS25LP064",
diff --git a/flashchips.h b/flashchips.h
index e190dca..f87e30e 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -472,6 +472,7 @@

#define ISSI_ID 0xD5 /* ISSI Integrated Silicon Solutions, see also PMC. */
#define ISSI_ID_SPI 0x9D /* ISSI ID used for SPI flash, see also PMC_ID_NOPREFIX */
+#define ISSI_IS25LP016 0x6015
#define ISSI_IS25LP064 0x6017
#define ISSI_IS25LP128 0x6018
#define ISSI_IS25LP256 0x6019
--
2.25.1