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c2bcdabf2a
Patch picked from commit 82618062cf
This enables 4B opcodes for MX25L25635F, to fix the reboot crash
issue (FS#1120) At least 3 devices are using this flash
- GeHua GHL-R-001
- Youku YK1
- Newifi D1
Now the MX25L25635F can be correctly detected without breaking MX25L25635E
[ 3.034324] spi-mt7621 1e000b00.spi: sys_freq: 220000000
[ 3.045962] m25p80 spi0.0: mx25l25635f (32768 Kbytes)
[ 3.056098] 4 fixed-partitions partitions found on MTD device spi0.0
[ 3.068748] Creating 4 MTD partitions on "spi0.0":
Signed-off-by: Deng Qingfang <dengqf6@mail2.sysu.edu.cn>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [added deprecation notice]
73 lines
2.6 KiB
Diff
73 lines
2.6 KiB
Diff
This hack can be dropped after the next stable release from
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v5.x-tree.
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The problem was fixed upstream by
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commit 2bffa65da43e ("mtd: spi-nor: Add a post BFPT fixup for MX25L25635E")
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For reference see:
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<https://github.com/openwrt/openwrt/pull/1743>
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--- a/drivers/mtd/spi-nor/spi-nor.c
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+++ b/drivers/mtd/spi-nor/spi-nor.c
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@@ -1098,6 +1098,7 @@ static const struct flash_info spi_nor_i
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{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
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{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
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{ "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
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+ { "mx25l25635f", INFO(0xc22019, 0, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
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{ "mx25u25635f", INFO(0xc22539, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_4B_OPCODES) },
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{ "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
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{ "mx66l51235l", INFO(0xc2201a, 0, 64 * 1024, 1024, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
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@@ -1267,11 +1268,12 @@ static const struct flash_info spi_nor_i
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{ },
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};
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-static const struct flash_info *spi_nor_read_id(struct spi_nor *nor)
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+static const struct flash_info *spi_nor_read_id(struct spi_nor *nor,
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+ const char *name)
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{
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int tmp;
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u8 id[SPI_NOR_MAX_ID_LEN];
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- const struct flash_info *info;
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+ const struct flash_info *info, *first_match = NULL;
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tmp = nor->read_reg(nor, SPINOR_OP_RDID, id, SPI_NOR_MAX_ID_LEN);
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if (tmp < 0) {
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@@ -1282,10 +1284,16 @@ static const struct flash_info *spi_nor_
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for (tmp = 0; tmp < ARRAY_SIZE(spi_nor_ids) - 1; tmp++) {
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info = &spi_nor_ids[tmp];
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if (info->id_len) {
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- if (!memcmp(info->id, id, info->id_len))
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- return &spi_nor_ids[tmp];
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+ if (!memcmp(info->id, id, info->id_len)) {
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+ if (!name || !strcmp(name, info->name))
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+ return info;
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+ if (!first_match)
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+ first_match = info;
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+ }
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}
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}
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+ if (first_match)
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+ return first_match;
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dev_err(nor->dev, "unrecognized JEDEC id bytes: %02x, %02x, %02x\n",
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id[0], id[1], id[2]);
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return ERR_PTR(-ENODEV);
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@@ -2765,7 +2773,7 @@ int spi_nor_scan(struct spi_nor *nor, co
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info = spi_nor_match_id(name);
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/* Try to auto-detect if chip name wasn't specified or not found */
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if (!info)
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- info = spi_nor_read_id(nor);
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+ info = spi_nor_read_id(nor, NULL);
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if (IS_ERR_OR_NULL(info))
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return -ENOENT;
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@@ -2776,7 +2784,7 @@ int spi_nor_scan(struct spi_nor *nor, co
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if (name && info->id_len) {
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const struct flash_info *jinfo;
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- jinfo = spi_nor_read_id(nor);
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+ jinfo = spi_nor_read_id(nor, name);
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if (IS_ERR(jinfo)) {
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return PTR_ERR(jinfo);
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} else if (jinfo != info) {
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