diff options
Diffstat (limited to 'meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0117-spi-nor-Add-flash-array-support.patch')
| -rw-r--r-- | meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0117-spi-nor-Add-flash-array-support.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0117-spi-nor-Add-flash-array-support.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0117-spi-nor-Add-flash-array-support.patch new file mode 100644 index 0000000..5003ae6 --- /dev/null +++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0117-spi-nor-Add-flash-array-support.patch @@ -0,0 +1,89 @@ +From 0d10eb085d28a442b147e63383d1836cb3e62ae4 Mon Sep 17 00:00:00 2001 +From: Dmitry Shifrin <dmitry.shifrin@cogentembedded.com> +Date: Mon, 19 Mar 2018 11:32:58 +0300 +Subject: [PATCH 08/12] spi-nor: Add flash array support + +Signed-off-by: Dmitry Shifrin <dmitry.shifrin@cogentembedded.com> +--- + drivers/mtd/spi-nor/spi-nor.c | 20 ++++++++++++++++++-- + include/linux/mtd/spi-nor.h | 12 ++++++++++++ + 2 files changed, 30 insertions(+), 2 deletions(-) + +diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c +index 1855bbe..3ced558 100644 +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -1338,6 +1338,9 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) + if (ret) + return ret; + ++ if (!nor->array_size) ++ nor->array_size = 1; ++ + if (name) + info = spi_nor_match_id(name); + /* Try to auto-detect if chip name wasn't specified or not found */ +@@ -1500,7 +1503,10 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) + /* Dedicated 4-byte command set */ + switch (nor->flash_read) { + case SPI_NOR_QUAD: +- nor->read_opcode = SPINOR_OP_READ4_1_1_4; ++ if (info->flags & SPANSION_S512FS_QUIRK) ++ nor->read_opcode = SPINOR_OP_READ4_1_4_4; ++ else ++ nor->read_opcode = SPINOR_OP_READ4_1_1_4; + break; + case SPI_NOR_DUAL: + nor->read_opcode = SPINOR_OP_READ4_1_1_2; +@@ -1528,7 +1534,17 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) + return -EINVAL; + } + +- nor->read_dummy = spi_nor_read_dummy_cycles(nor); ++ if (info->flags & SPANSION_S512FS_QUIRK) { ++ nor->read_dummy = 10; ++ nor->flags |= SNOR_F_USE_CLSR; ++ } else ++ nor->read_dummy = spi_nor_read_dummy_cycles(nor); ++ ++ /* recount parameters using array size */ ++ mtd->erasesize *= nor->array_size; ++ mtd->size *= nor->array_size; ++ nor->page_size *= nor->array_size; ++ mtd->writebufsize *= nor->array_size; + + dev_info(dev, "%s (%lld Kbytes)\n", info->name, + (long long)mtd->size >> 10); +diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h +index 99f7b2a..7216b09 100644 +--- a/include/linux/mtd/spi-nor.h ++++ b/include/linux/mtd/spi-nor.h +@@ -174,6 +174,7 @@ struct spi_nor { + bool sst_write_second; + u32 flags; + u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE]; ++ u8 array_size; + + int (*prepare)(struct spi_nor *nor, enum spi_nor_ops ops); + void (*unprepare)(struct spi_nor *nor, enum spi_nor_ops ops); +@@ -204,6 +205,17 @@ static inline struct device_node *spi_nor_get_flash_node(struct spi_nor *nor) + return mtd_get_of_node(&nor->mtd); + } + ++static inline void spi_nor_set_array_size(struct spi_nor *nor, ++ u8 size) ++{ ++ nor->array_size = size; ++} ++ ++static inline u8 spi_nor_get_array_size(struct spi_nor *nor) ++{ ++ return nor->array_size; ++} ++ + static inline int spi_nor_get_read_addr_nbits(u8 opcode) + { + if (opcode == SPINOR_OP_READ4_1_4_4) +-- +2.7.4 + |