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GET /api/patches/208838/?format=api
{ "id": 208838, "url": "http://patchwork.ozlabs.org/api/patches/208838/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/1356952428-19824-9-git-send-email-jagannadh.teki@gmail.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1356952428-19824-9-git-send-email-jagannadh.teki@gmail.com>", "list_archive_url": null, "date": "2012-12-31T11:13:47", "name": "[U-Boot,08/12] cmd_sf: Add DOFR(Dual Output Fast Read) read instruction support", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "21d829ad9349d28e4bf341f87c4ff8404ab02a08", "submitter": { "id": 20045, "url": "http://patchwork.ozlabs.org/api/people/20045/?format=api", "name": "Jagan Teki", "email": "jagannadh.teki@gmail.com" }, "delegate": { "id": 17739, "url": "http://patchwork.ozlabs.org/api/users/17739/?format=api", "username": "jagan", "first_name": "Jagannadha Sutradharudu", "last_name": "Teki", "email": "jagannadh.teki@gmail.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/1356952428-19824-9-git-send-email-jagannadh.teki@gmail.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/208838/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/208838/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Received": [ "from theia.denx.de (theia.denx.de [85.214.87.163])\n\tby ozlabs.org (Postfix) with ESMTP id 164452C009A\n\tfor <incoming@patchwork.ozlabs.org>;\n\tMon, 31 Dec 2012 22:17:16 +1100 (EST)", "from localhost (localhost [127.0.0.1])\n\tby theia.denx.de (Postfix) with ESMTP id B17E84A17F;\n\tMon, 31 Dec 2012 12:17:11 +0100 (CET)", "from theia.denx.de ([127.0.0.1])\n\tby localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id mfbTAhgbFQvN; 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a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;\n\th=x-received:from:to:cc:subject:date:message-id:x-mailer:in-reply-to\n\t:references; bh=xLnxc3fZs4uHJFbNT63tTtcE4sFiaenRODR+oXJvNAc=;\n\tb=OjGXvORYtIxe9FnZTddoeKi/bE0zrPWHDe4CDXpulyk90aM60cc1fFgWKaRPaXDCCz\n\tYo43C/nUF0Jy8GdZzdlGpa1CbPBiPQbrQyGE0abbvyefD5C89kGRWF4uKORSJDI+LBCC\n\tqyYLcJo1liexpGzFJqfRK5GkKUAo5y7xGhyfGI/k5Ow1oH3jYDKVdwPYJqHJ9de67idD\n\tBryN5Iwdl0Wc7vcgGg1nueU/qjv5WRF8bGKCHlNqfvXCnVoxWEZl/a/vjkx0pReSCN4l\n\t2oAgLyX94VyeSM55HO0pednLbslfzhjHtvWS2Rv/cIkGs8I5RjyG6qBjjRJIgR1Wx+V9\n\tUTiQ==", "X-Received": "by 10.66.83.196 with SMTP id s4mr119709608pay.74.1356952466100; \n\tMon, 31 Dec 2012 03:14:26 -0800 (PST)", "From": "Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>", "To": "u-boot@lists.denx.de", "Date": "Mon, 31 Dec 2012 16:43:47 +0530", "Message-Id": "<1356952428-19824-9-git-send-email-jagannadh.teki@gmail.com>", "X-Mailer": "git-send-email 1.7.0.4", "In-Reply-To": "<1356952428-19824-1-git-send-email-jagannadh.teki@gmail.com>", "References": "<1356952428-19824-1-git-send-email-jagannadh.teki@gmail.com>", "Subject": "[U-Boot] [PATCH 08/12] cmd_sf: Add DOFR(Dual Output Fast Read) read\n\tinstruction support", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.11", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<http://lists.denx.de/mailman/options/u-boot>,\n\t<mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<http://lists.denx.de/pipermail/u-boot>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<http://lists.denx.de/mailman/listinfo/u-boot>,\n\t<mailto:u-boot-request@lists.denx.de?subject=subscribe>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "u-boot-bounces@lists.denx.de", "Errors-To": "u-boot-bounces@lists.denx.de" }, "content": "This patch provides a support to read a flash using 'dofr'\nread instruction(rd_inst) for 'sf read' and 'sf update' commands.\n\n'dofr' will effectively increases the data transfer rate\nby up to two times, as compared to the afr(Array Fast Read).\n\nExample:\nread 0x2000 length bytes starting at offset 0x0 to memory at 0x10000\nusing dofr read instruction.\nu-boot> sf read dofr 0x10000 0x0 0x2000\n\nerase and write 0x2000 length bytes from memory at 0x10000 address to\nflash offset at 0x0 using pp write instruction and dofr read instruction.\nu-boot> sf update pp dofr 0x10000 0x0 0x2000\n\nSigned-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>\n---\n common/cmd_sf.c | 10 +++++++---\n include/spi_flash_inst.h | 1 +\n 2 files changed, 8 insertions(+), 3 deletions(-)", "diff": "diff --git a/common/cmd_sf.c b/common/cmd_sf.c\nindex 3d9c93e..b971d2a 100644\n--- a/common/cmd_sf.c\n+++ b/common/cmd_sf.c\n@@ -281,6 +281,8 @@ static int sf_parse_rd_inst_arg(char *arg, u8 *rd_inst)\n \t\t*rd_inst = CMD_READ_ARRAY_FAST;\n \telse if (strcmp(arg, \"asr\") == 0)\n \t\t*rd_inst = CMD_READ_ARRAY_SLOW;\n+\telse if (strcmp(arg, \"dofr\") == 0)\n+\t\t*rd_inst = CMD_READ_DUAL_OUTPUT_FAST;\n \telse\n \t\treturn 1;\n \n@@ -630,9 +632,10 @@ U_BOOT_CMD(\n \t\"sf read rd_inst addr offset len\\n\"\n \t\"\t\t\t\t- read `len' bytes starting at\\n\"\n \t\"\t\t\t\t `offset' to memory at `addr' using\\n\"\n-\t\"\t\t\t\t afr | asr `rd_inst' read instructions\\n\"\n+\t\"\t\t\t\t afr | asr | dofr `rd_inst' read instructions\\n\"\n \t\"\t\t\t\t afr (Array Fast Read, 0bh)\\n\"\n \t\"\t\t\t\t asr (Array Slow Read, 02b)\\n\"\n+\t\"\t\t\t\t dofr (Dual Output Fast Read, 3bh)\\n\"\n \t\"sf write wr_inst addr offset len\\n\"\n \t\"\t\t\t\t- write `len' bytes from memory\\n\"\n \t\"\t\t\t\t at `addr' to flash at `offset' using\\n\"\n@@ -647,8 +650,9 @@ U_BOOT_CMD(\n \t\"\t\t\t\t pp | qpp `wr_inst' write instructions and\\n\"\n \t\"\t\t\t\t pp (Page Program, 02h)\\n\"\n \t\"\t\t\t\t qpp (Quad Page Program, 32h)\\n\"\n-\t\"\t\t\t\t afr | asr `rd_inst' read instructions\\n\"\n+\t\"\t\t\t\t afr | asr | dofr `rd_inst' read instructions\\n\"\n \t\"\t\t\t\t afr (Array Fast Read, 0bh)\\n\"\n-\t\"\t\t\t\t asr (Array Slow Read, 02b)\"\n+\t\"\t\t\t\t asr (Array Slow Read, 02b)\\n\"\n+\t\"\t\t\t\t dofr (Dual Output Fast Read, 3bh)\"\n \tSF_TEST_HELP\n );\ndiff --git a/include/spi_flash_inst.h b/include/spi_flash_inst.h\nindex 85c8e70..f8fcf5e 100644\n--- a/include/spi_flash_inst.h\n+++ b/include/spi_flash_inst.h\n@@ -31,5 +31,6 @@\n /* Read commands */\n #define CMD_READ_ARRAY_FAST\t\t0x0b\n #define CMD_READ_ARRAY_SLOW\t\t0x03\n+#define CMD_READ_DUAL_OUTPUT_FAST\t0x3b\n \n #endif /* _SPI_FLASH_INST_H_ */\n", "prefixes": [ "U-Boot", "08/12" ] }