diff options
Diffstat (limited to 'target/linux/generic/backport-4.14/403-v4.15-0001-mtd-spi-nor-add-a-quad_enable-callback-in-struct-fla.patch')
| -rw-r--r-- | target/linux/generic/backport-4.14/403-v4.15-0001-mtd-spi-nor-add-a-quad_enable-callback-in-struct-fla.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.14/403-v4.15-0001-mtd-spi-nor-add-a-quad_enable-callback-in-struct-fla.patch b/target/linux/generic/backport-4.14/403-v4.15-0001-mtd-spi-nor-add-a-quad_enable-callback-in-struct-fla.patch new file mode 100644 index 0000000000..6cc7b44c1f --- /dev/null +++ b/target/linux/generic/backport-4.14/403-v4.15-0001-mtd-spi-nor-add-a-quad_enable-callback-in-struct-fla.patch @@ -0,0 +1,47 @@ +From e27072851bf7d706c592fc528549b52023b17a09 Mon Sep 17 00:00:00 2001 +From: Andy Yan <andy.yan@rock-chips.com> +Date: Mon, 28 Aug 2017 09:58:29 +0800 +Subject: [PATCH 1/2] mtd: spi-nor: add a quad_enable callback in struct + flash_info + +Some manufacturers may use different bit to set QE on different +memories. + +The GD25Q256 from GigaDevice is an example, which uses S6(bit 6 +of the Status Register-1) to set QE, which is different with +other supported memories from GigaDevice that use S9(bit 1 of +the Status Register-2). This makes it is impossible to select +the quad enable method by distinguishing the MFR. This patch +introduce a quad_enable function which can be set per memory +in the flash_info list table. + +Signed-off-by: Andy Yan <andy.yan@rock-chips.com> +Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> + +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -89,6 +89,8 @@ struct flash_info { + #define NO_CHIP_ERASE BIT(12) /* Chip does not support chip erase */ + #define SPI_NOR_SKIP_SFDP BIT(13) /* Skip parsing of SFDP tables */ + #define USE_CLSR BIT(14) /* use CLSR command */ ++ ++ int (*quad_enable)(struct spi_nor *nor); + }; + + #define JEDEC_MFR(info) ((info)->id[0]) +@@ -2433,6 +2435,15 @@ static int spi_nor_init_params(struct sp + params->quad_enable = spansion_quad_enable; + break; + } ++ ++ /* ++ * Some manufacturer like GigaDevice may use different ++ * bit to set QE on different memories, so the MFR can't ++ * indicate the quad_enable method for this case, we need ++ * set it in flash info list. ++ */ ++ if (info->quad_enable) ++ params->quad_enable = info->quad_enable; + } + + /* Override the parameters with data read from SFDP tables. */ |