diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.10/0152-mtd-nand-pxa3xx-Add-multiple-chunk-write-support.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.10/0152-mtd-nand-pxa3xx-Add-multiple-chunk-write-support.patch | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/target/linux/mvebu/patches-3.10/0152-mtd-nand-pxa3xx-Add-multiple-chunk-write-support.patch b/target/linux/mvebu/patches-3.10/0152-mtd-nand-pxa3xx-Add-multiple-chunk-write-support.patch deleted file mode 100644 index 058dc0bc3c..0000000000 --- a/target/linux/mvebu/patches-3.10/0152-mtd-nand-pxa3xx-Add-multiple-chunk-write-support.patch +++ /dev/null @@ -1,146 +0,0 @@ -From db95c66cebb6297595a5a32b369d1033b08775ce Mon Sep 17 00:00:00 2001 -From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> -Date: Thu, 14 Nov 2013 18:25:38 -0300 -Subject: [PATCH 152/203] mtd: nand: pxa3xx: Add multiple chunk write support - -This commit adds write support for large pages (4 KiB, 8 KiB). -Such support is implemented by issuing a multiple command sequence, -transfering a set of 2 KiB chunks per transaction. - -The splitted command sequence requires to send the SEQIN command -independently of the PAGEPROG command and therefore it's set as -an execution command. - -Since PAGEPROG enables ECC, each 2 KiB chunk of data is written -together with ECC code at a controller-fixed location within -the flash page. - -Currently, only devices with a 4 KiB page size has been tested. - -Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> -Tested-by: Daniel Mack <zonque@gmail.com> -Signed-off-by: Brian Norris <computersforpeace@gmail.com> ---- - drivers/mtd/nand/pxa3xx_nand.c | 81 +++++++++++++++++++++++++++++++++++++----- - 1 file changed, 73 insertions(+), 8 deletions(-) - ---- a/drivers/mtd/nand/pxa3xx_nand.c -+++ b/drivers/mtd/nand/pxa3xx_nand.c -@@ -760,6 +760,20 @@ static int prepare_set_command(struct px - - info->buf_start = column; - set_command_address(info, mtd->writesize, 0, page_addr); -+ -+ /* -+ * Multiple page programming needs to execute the initial -+ * SEQIN command that sets the page address. -+ */ -+ if (mtd->writesize > PAGE_CHUNK_SIZE) { -+ info->ndcb0 |= NDCB0_CMD_TYPE(0x1) -+ | NDCB0_EXT_CMD_TYPE(ext_cmd_type) -+ | addr_cycle -+ | command; -+ /* No data transfer in this case */ -+ info->data_size = 0; -+ exec_cmd = 1; -+ } - break; - - case NAND_CMD_PAGEPROG: -@@ -769,13 +783,40 @@ static int prepare_set_command(struct px - break; - } - -- info->ndcb0 |= NDCB0_CMD_TYPE(0x1) -- | NDCB0_AUTO_RS -- | NDCB0_ST_ROW_EN -- | NDCB0_DBC -- | (NAND_CMD_PAGEPROG << 8) -- | NAND_CMD_SEQIN -- | addr_cycle; -+ /* Second command setting for large pages */ -+ if (mtd->writesize > PAGE_CHUNK_SIZE) { -+ /* -+ * Multiple page write uses the 'extended command' -+ * field. This can be used to issue a command dispatch -+ * or a naked-write depending on the current stage. -+ */ -+ info->ndcb0 |= NDCB0_CMD_TYPE(0x1) -+ | NDCB0_LEN_OVRD -+ | NDCB0_EXT_CMD_TYPE(ext_cmd_type); -+ info->ndcb3 = info->chunk_size + -+ info->oob_size; -+ -+ /* -+ * This is the command dispatch that completes a chunked -+ * page program operation. -+ */ -+ if (info->data_size == 0) { -+ info->ndcb0 = NDCB0_CMD_TYPE(0x1) -+ | NDCB0_EXT_CMD_TYPE(ext_cmd_type) -+ | command; -+ info->ndcb1 = 0; -+ info->ndcb2 = 0; -+ info->ndcb3 = 0; -+ } -+ } else { -+ info->ndcb0 |= NDCB0_CMD_TYPE(0x1) -+ | NDCB0_AUTO_RS -+ | NDCB0_ST_ROW_EN -+ | NDCB0_DBC -+ | (NAND_CMD_PAGEPROG << 8) -+ | NAND_CMD_SEQIN -+ | addr_cycle; -+ } - break; - - case NAND_CMD_PARAM: -@@ -919,8 +960,15 @@ static void armada370_nand_cmdfunc(struc - case NAND_CMD_READOOB: - ext_cmd_type = EXT_CMD_TYPE_MONO; - break; -+ case NAND_CMD_SEQIN: -+ ext_cmd_type = EXT_CMD_TYPE_DISPATCH; -+ break; -+ case NAND_CMD_PAGEPROG: -+ ext_cmd_type = EXT_CMD_TYPE_NAKED_RW; -+ break; - default: - ext_cmd_type = 0; -+ break; - } - - prepare_start_command(info, command); -@@ -958,7 +1006,16 @@ static void armada370_nand_cmdfunc(struc - } - - /* Check if the sequence is complete */ -- if (info->data_size == 0) -+ if (info->data_size == 0 && command != NAND_CMD_PAGEPROG) -+ break; -+ -+ /* -+ * After a splitted program command sequence has issued -+ * the command dispatch, the command sequence is complete. -+ */ -+ if (info->data_size == 0 && -+ command == NAND_CMD_PAGEPROG && -+ ext_cmd_type == EXT_CMD_TYPE_DISPATCH) - break; - - if (command == NAND_CMD_READ0 || command == NAND_CMD_READOOB) { -@@ -967,6 +1024,14 @@ static void armada370_nand_cmdfunc(struc - ext_cmd_type = EXT_CMD_TYPE_LAST_RW; - else - ext_cmd_type = EXT_CMD_TYPE_NAKED_RW; -+ -+ /* -+ * If a splitted program command has no more data to transfer, -+ * the command dispatch must be issued to complete. -+ */ -+ } else if (command == NAND_CMD_PAGEPROG && -+ info->data_size == 0) { -+ ext_cmd_type = EXT_CMD_TYPE_DISPATCH; - } - } while (1); - |