From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiaolei Li Subject: [PATCH v2 0/5] MTK NAND driver improvements and fixes Date: Tue, 30 Apr 2019 18:02:45 +0800 Message-ID: <20190430100250.28083-1-xiaolei.li@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org To: miquel.raynal@bootlin.com, richard@nod.at Cc: linux-mediatek@lists.infradead.org, xiaolei.li@mediatek.com, linux-mtd@lists.infradead.org, srv_heupstream@mediatek.com List-Id: linux-mediatek@lists.infradead.org The following patch set mainly contains: * Fix low level time calculation of read/write cycle to meet tRC_min and tWC_min requirements. * Refine RE# pulse width calculation and data sampling to improve read performance. * Add CS validity check. * Fix oob buffer pointer wrongly setting and empty page threshold setting. Changes on v2 relative to: -------------------- tree : git://git.infradead.org/linux-mtd.git branch : master commit : 'commit 3e35730dd754 ("mtd: powernv_flash: Fix device registration error") Patch v2: --------- - Fix type - Reference correct faulty patch - Refine code to do calculation and condition in separate steps - Fix empty threshold calculation Tests: ------ * ubifs and jffs2 are validated on NAND device MT29F16G08ADBCA by 'dd' command. * all drivers/mtd/tests/* pass. * speed test: eraseblock write speed is 11087 KiB/s eraseblock read speed is 19986 KiB/s page write speed is 10689 KiB/s page read speed is 18724 KiB/s 2 page write speed is 10611 KiB/s 2 page read speed is 18713 KiB/s erase speed is 103696 KiB/s 2x multi-block erase speed is 354248 KiB/s 4x multi-block erase speed is 350459 KiB/s 8x multi-block erase speed is 356173 KiB/s 16x multi-block erase speed is 356173 KiB/s 32x multi-block erase speed is 358120 KiB/s 64x multi-block erase speed is 356173 KiB/s Xiaolei Li (5): mtd: rawnand: mtk: Correct low level time calculation of r/w cycle mtd: rawnand: mtk: Improve data sampling timing for read cycle mtd: rawnand: mtk: Add validity check for CE# pin setting mtd: rawnand: mtk: Fix wrongly assigned OOB buffer pointer issue mtd: rawnand: mtk: Setup empty page threshold correctly drivers/mtd/nand/raw/mtk_nand.c | 93 ++++++++++++++++++++++++++++----- 1 file changed, 79 insertions(+), 14 deletions(-) -- 2.18.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/