From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris BREZILLON Subject: [RFC PATCH 2/9] mtd: nand: define struct nand_timings Date: Wed, 8 Jan 2014 15:21:57 +0100 Message-ID: <1389190924-26226-3-git-send-email-b.brezillon@overkiz.com> References: <1389190924-26226-1-git-send-email-b.brezillon@overkiz.com> Return-path: In-Reply-To: <1389190924-26226-1-git-send-email-b.brezillon@overkiz.com> Sender: linux-doc-owner@vger.kernel.org To: Maxime Ripard , Rob Landley , Russell King , David Woodhouse , Grant Likely Cc: devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, dev@linux-sunxi.org, Boris BREZILLON List-Id: devicetree@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 | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 9e6c8f9..3dda312 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -805,4 +805,48 @@ static inline bool nand_is_slc(struct nand_chip *chip) { return chip->bits_per_cell == 1; } + +/** + * struct nand_timings - NAND chip timing definitions + * + * This struct defines the timing requirements of a NAND chip. + * These informations can be found in every NAND datasheets. + * + * All fields are optional and depend on the hardware driver requirements + */ +struct nand_timings { + u32 tCLS_min; + u32 tCLH_min; + u32 tCS_min; + u32 tCH_min; + u32 tWP_min; + u32 tALS_min; + u32 tALH_min; + u32 tDS_min; + u32 tDH_min; + u32 tWC_min; + u32 tWH_min; + u32 tR_max; + u32 tAR_min; + u32 tCLR_min; + u32 tRR_min; + u32 tRP_min; + u32 tWB_max; + u32 tRC_min; + u32 tREA_max; + u32 tRHZ_max; + u32 tCHZ_max; + u32 tRHOH_min; + u32 tRLOH_min; + u32 tCOH_min; + u32 tREH_min; + u32 tWHR_min; + u32 tRHW_min; + u32 tIR_min; + u32 tCR_min; + u32 tADL_min; + u32 tRST_max; + u32 tWW_min; +}; + #endif /* __LINUX_MTD_NAND_H */ -- 1.7.9.5