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kernel: Add support for Winbond w25q128jv SPI NOR flash

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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>
This commit is contained in:
Baptiste Jonglez
2018-10-18 11:08:20 +02:00
committed by Koen Vandeputte
parent 44084d89f2
commit aa0aa47aa1
8 changed files with 86 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
target/linux/ramips/patches-4.14/0053-mtd-spi-nor-add-w25q256-3b-mode-switch.patch
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@@ -116,7 +116,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_LOCK);
return ret;
@@ -1170,7 +1222,7 @@ static const struct flash_info spi_nor_i
@@ -1175,7 +1227,7 @@ static const struct flash_info spi_nor_i
{ "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
@@ -125,7 +125,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
{ "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024,
SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) },
@@ -1230,6 +1282,9 @@ static int spi_nor_read(struct mtd_info
@@ -1235,6 +1287,9 @@ static int spi_nor_read(struct mtd_info
if (ret)
return ret;
@@ -135,7 +135,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
while (len) {
loff_t addr = from;
@@ -1254,6 +1309,18 @@ static int spi_nor_read(struct mtd_info
@@ -1259,6 +1314,18 @@ static int spi_nor_read(struct mtd_info
ret = 0;
read_err:
@@ -154,7 +154,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ);
return ret;
}
@@ -1355,6 +1422,10 @@ static int spi_nor_write(struct mtd_info
@@ -1360,6 +1427,10 @@ static int spi_nor_write(struct mtd_info
if (ret)
return ret;
@@ -165,7 +165,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
for (i = 0; i < len; ) {
ssize_t written;
loff_t addr = to + i;
@@ -1395,6 +1466,7 @@ static int spi_nor_write(struct mtd_info
@@ -1400,6 +1471,7 @@ static int spi_nor_write(struct mtd_info
}
write_err:
@@ -173,7 +173,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
return ret;
}
@@ -2811,8 +2883,10 @@ int spi_nor_scan(struct spi_nor *nor, co
@@ -2816,8 +2888,10 @@ int spi_nor_scan(struct spi_nor *nor, co
} else if (mtd->size > 0x1000000) {
/* enable 4-byte addressing if the device exceeds 16MiB */
nor->addr_width = 4;