Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753111AbaGKHz5 (ORCPT ); Fri, 11 Jul 2014 03:55:57 -0400 Received: from top.free-electrons.com ([176.31.233.9]:33559 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752885AbaGKHz4 (ORCPT ); Fri, 11 Jul 2014 03:55:56 -0400 From: Boris BREZILLON To: David Woodhouse , Brian Norris , linux-mtd@lists.infradead.org Cc: Lee Jones , linux-kernel@vger.kernel.org, Boris BREZILLON Subject: [PATCH 1/2] mtd: nand: define struct nand_timings Date: Fri, 11 Jul 2014 09:49:41 +0200 Message-Id: <1405064982-11456-2-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1405064982-11456-1-git-send-email-boris.brezillon@free-electrons.com> References: <1405064982-11456-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Define a struct containing the standard NAND timings as described in NAND datasheets. Signed-off-by: Boris BREZILLON --- include/linux/mtd/nand.h | 49 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 2f0af28..a3a45f2 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -947,4 +947,53 @@ static inline int jedec_feature(struct nand_chip *chip) return chip->jedec_version ? le16_to_cpu(chip->jedec_params.features) : 0; } + +/** + * struct nand_sdr_timings - SDR NAND chip timings + * + * This struct defines the timing requirements of a SDR NAND chip. + * These informations can be found in every NAND datasheets and the timings + * meaning are described in the ONFI specifications: + * www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing + * Parameters) + * + * All these timings are expressed in picoseconds. + */ + +struct nand_sdr_timings { + u32 tALH_min; + u32 tADL_min; + u32 tALS_min; + u32 tAR_min; + u32 tCEA_max; + u32 tCEH_min; + u32 tCH_min; + u32 tCHZ_max; + u32 tCLH_min; + u32 tCLR_min; + u32 tCLS_min; + u32 tCOH_min; + u32 tCS_min; + u32 tDH_min; + u32 tDS_min; + u32 tFEAT_max; + u32 tIR_min; + u32 tITC_max; + u32 tRC_min; + u32 tREA_max; + u32 tREH_min; + u32 tRHOH_min; + u32 tRHW_min; + u32 tRHZ_max; + u32 tRLOH_min; + u32 tRP_min; + u32 tRR_min; + u64 tRST_max; + u32 tWB_max; + u32 tWC_min; + u32 tWH_min; + u32 tWHR_min; + u32 tWP_min; + u32 tWW_min; +}; #endif /* __LINUX_MTD_NAND_H */ -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/