mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 00:11:13 +00:00
aa0aa47aa1
Newer batches of several Mikrotik boards contain this yet-unsupported flash chip, for instance: - rb941-2nd (hAP lite) - rb952ui-5ac2nd (hAP ac lite) - RBM33G and probably other Mikrotik boards need this patch as well. The patch was submitted upstream by Robert Marko: https://patchwork.ozlabs.org/patch/934181/ Closes: FS#1715 Signed-off-by: Baptiste Jonglez <git@bitsofnetworks.org> Cc: Robert Marko <robimarko@gmail.com> [Rebased + refreshed on current kernels] Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
|
|
Subject: [PATCH] mtd: spi-nor: detect JEDEC incompatible w25q128 using 0x90
|
|
command
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Some w25q128 chipsets don't support RDID (0x9f) command, they reply with
|
|
0xff-s only. To suppose such flashes fallback to the 0x90 command.
|
|
|
|
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
|
|
---
|
|
|
|
--- a/drivers/mtd/spi-nor/spi-nor.c
|
|
+++ b/drivers/mtd/spi-nor/spi-nor.c
|
|
@@ -1220,6 +1220,18 @@ static const struct flash_info *spi_nor_
|
|
}
|
|
dev_err(nor->dev, "unrecognized JEDEC id bytes: %02x, %02x, %02x\n",
|
|
id[0], id[1], id[2]);
|
|
+
|
|
+ tmp = nor->read_reg(nor, 0x90, id, SPI_NOR_MAX_ID_LEN);
|
|
+ if (tmp < 0) {
|
|
+ dev_dbg(nor->dev, " error %d reading JEDEC ID\n", tmp);
|
|
+ return ERR_PTR(tmp);
|
|
+ }
|
|
+ dev_info(nor->dev, "using Read Manufacturer / Device ID command (0x%02x) returned %02x %02x\n",
|
|
+ 0x90, id[0x03], id[0x04]);
|
|
+ if (id[0x03] == 0xef && id[0x04] == 0x17) {
|
|
+ return spi_nor_match_id("w25q128");
|
|
+ }
|
|
+
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
|