From fea884ff51cc2ed1016b4e13a9fcc728bd4f357e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Fri, 29 Dec 2017 23:09:32 +0100 Subject: bcm53xx: add early support for kernel 4.14 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Don't switch to it by default yet as it requires more testing. Signed-off-by: Rafał Miłecki --- ...-detect-JEDEC-incompatible-w25q128-using-.patch | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 target/linux/bcm53xx/patches-4.14/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch (limited to 'target/linux/bcm53xx/patches-4.14/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch') diff --git a/target/linux/bcm53xx/patches-4.14/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch b/target/linux/bcm53xx/patches-4.14/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch new file mode 100644 index 0000000000..75105261ac --- /dev/null +++ b/target/linux/bcm53xx/patches-4.14/400-mtd-spi-nor-detect-JEDEC-incompatible-w25q128-using-.patch @@ -0,0 +1,34 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +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 +--- + +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -1205,6 +1205,18 @@ 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); + } + -- cgit v1.2.3