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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

14
target/linux/layerscape/patches-4.9/401-mtd-spi-nor-support-layerscape.patch
View File

@@ -768,7 +768,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
{ "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) },
{
"w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64,
@@ -1196,6 +1220,53 @@ static const struct flash_info *spi_nor_
@@ -1201,6 +1225,53 @@ static const struct flash_info *spi_nor_
id[0], id[1], id[2]);
return ERR_PTR(-ENODEV);
}
@@ -822,7 +822,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
@@ -1415,7 +1486,7 @@ static int macronix_quad_enable(struct s
@@ -1420,7 +1491,7 @@ static int macronix_quad_enable(struct s
* Write status Register and configuration register with 2 bytes
* The first byte will be written to the status register, while the
* second byte will be written to the configuration register.
@@ -831,7 +831,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
*/
static int write_sr_cr(struct spi_nor *nor, u16 val)
{
@@ -1463,6 +1534,24 @@ static int spansion_quad_enable(struct s
@@ -1468,6 +1539,24 @@ static int spansion_quad_enable(struct s
return 0;
}
@@ -856,7 +856,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
static int set_quad_mode(struct spi_nor *nor, const struct flash_info *info)
{
int status;
@@ -1609,9 +1698,25 @@ int spi_nor_scan(struct spi_nor *nor, co
@@ -1614,9 +1703,25 @@ int spi_nor_scan(struct spi_nor *nor, co
write_sr(nor, 0);
spi_nor_wait_till_ready(nor);
}
@@ -882,7 +882,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
mtd->priv = nor;
mtd->type = MTD_NORFLASH;
mtd->writesize = 1;
@@ -1645,6 +1750,8 @@ int spi_nor_scan(struct spi_nor *nor, co
@@ -1650,6 +1755,8 @@ int spi_nor_scan(struct spi_nor *nor, co
nor->flags |= SNOR_F_USE_FSR;
if (info->flags & SPI_NOR_HAS_TB)
nor->flags |= SNOR_F_HAS_SR_TB;
@@ -891,7 +891,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
#ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
/* prefer "small sector" erase if possible */
@@ -1684,9 +1791,15 @@ int spi_nor_scan(struct spi_nor *nor, co
@@ -1689,9 +1796,15 @@ int spi_nor_scan(struct spi_nor *nor, co
/* Some devices cannot do fast-read, no matter what DT tells us */
if (info->flags & SPI_NOR_NO_FR)
nor->flash_read = SPI_NOR_NORMAL;
@@ -910,7 +910,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
ret = set_quad_mode(nor, info);
if (ret) {
dev_err(dev, "quad mode not supported\n");
@@ -1699,6 +1812,9 @@ int spi_nor_scan(struct spi_nor *nor, co
@@ -1704,6 +1817,9 @@ int spi_nor_scan(struct spi_nor *nor, co
/* Default commands */
switch (nor->flash_read) {