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From: Bayi Cheng <bayi.cheng@mediatek.com>
To: David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Kumar Gala <galak@codeaurora.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Daniel Kurtz <djkurtz@chromium.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-mtd@lists.infradead.org>,
	<srv_heupstream@mediatek.com>,
	Bayi Cheng <bayi.cheng@mediatek.com>
Subject: [PATCH] mtd: mtk-nor: adjust sequence of trigger function and assignment function
Date: Fri, 18 Dec 2015 10:35:43 +0800	[thread overview]
Message-ID: <1450406143-29679-1-git-send-email-bayi.cheng@mediatek.com> (raw)

move write data register before excute command to avoid
missing first byte write to nor flash

Change-Id: Ie9d7ae30f9de1f3e976d2e1de5d8ee28837598c8
Signed-off-by: Bayi Cheng <bayi.cheng@mediatek.com>
---
 drivers/mtd/spi-nor/mtk-quadspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c
index dd269650..04da971 100644
--- a/drivers/mtd/spi-nor/mtk-quadspi.c
+++ b/drivers/mtd/spi-nor/mtk-quadspi.c
@@ -272,10 +272,10 @@ static int mt8173_nor_write_single_byte(struct mt8173_nor *mt8173_nor,
 	mt8173_nor_set_addr(mt8173_nor, addr);
 
 	for (i = 0; i < length; i++) {
+		writeb(*data++, mt8173_nor->base + MTK_NOR_WDATA_REG);
 		ret = mt8173_nor_execute_cmd(mt8173_nor, MTK_NOR_PIO_WR_CMD);
 		if (ret < 0)
 			return ret;
-		writeb(*data++, mt8173_nor->base + MTK_NOR_WDATA_REG);
 	}
 	return 0;
 }
-- 
1.8.1.1.dirty


WARNING: multiple messages have this Message-ID (diff)
From: Bayi Cheng <bayi.cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
To: David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
	Brian Norris
	<computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
	Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	Ian Campbell
	<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
	Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
	Matthias Brugger
	<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Daniel Kurtz <djkurtz-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
	Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org,
	Bayi Cheng <bayi.cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Subject: [PATCH] mtd: mtk-nor: adjust sequence of trigger function and assignment function
Date: Fri, 18 Dec 2015 10:35:43 +0800	[thread overview]
Message-ID: <1450406143-29679-1-git-send-email-bayi.cheng@mediatek.com> (raw)

move write data register before excute command to avoid
missing first byte write to nor flash

Change-Id: Ie9d7ae30f9de1f3e976d2e1de5d8ee28837598c8
Signed-off-by: Bayi Cheng <bayi.cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
---
 drivers/mtd/spi-nor/mtk-quadspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c
index dd269650..04da971 100644
--- a/drivers/mtd/spi-nor/mtk-quadspi.c
+++ b/drivers/mtd/spi-nor/mtk-quadspi.c
@@ -272,10 +272,10 @@ static int mt8173_nor_write_single_byte(struct mt8173_nor *mt8173_nor,
 	mt8173_nor_set_addr(mt8173_nor, addr);
 
 	for (i = 0; i < length; i++) {
+		writeb(*data++, mt8173_nor->base + MTK_NOR_WDATA_REG);
 		ret = mt8173_nor_execute_cmd(mt8173_nor, MTK_NOR_PIO_WR_CMD);
 		if (ret < 0)
 			return ret;
-		writeb(*data++, mt8173_nor->base + MTK_NOR_WDATA_REG);
 	}
 	return 0;
 }
-- 
1.8.1.1.dirty

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WARNING: multiple messages have this Message-ID (diff)
From: bayi.cheng@mediatek.com (Bayi Cheng)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mtd: mtk-nor: adjust sequence of trigger function and assignment function
Date: Fri, 18 Dec 2015 10:35:43 +0800	[thread overview]
Message-ID: <1450406143-29679-1-git-send-email-bayi.cheng@mediatek.com> (raw)

move write data register before excute command to avoid
missing first byte write to nor flash

Change-Id: Ie9d7ae30f9de1f3e976d2e1de5d8ee28837598c8
Signed-off-by: Bayi Cheng <bayi.cheng@mediatek.com>
---
 drivers/mtd/spi-nor/mtk-quadspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c
index dd269650..04da971 100644
--- a/drivers/mtd/spi-nor/mtk-quadspi.c
+++ b/drivers/mtd/spi-nor/mtk-quadspi.c
@@ -272,10 +272,10 @@ static int mt8173_nor_write_single_byte(struct mt8173_nor *mt8173_nor,
 	mt8173_nor_set_addr(mt8173_nor, addr);
 
 	for (i = 0; i < length; i++) {
+		writeb(*data++, mt8173_nor->base + MTK_NOR_WDATA_REG);
 		ret = mt8173_nor_execute_cmd(mt8173_nor, MTK_NOR_PIO_WR_CMD);
 		if (ret < 0)
 			return ret;
-		writeb(*data++, mt8173_nor->base + MTK_NOR_WDATA_REG);
 	}
 	return 0;
 }
-- 
1.8.1.1.dirty

             reply	other threads:[~2015-12-18  2:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-18  2:35 Bayi Cheng [this message]
2015-12-18  2:35 ` [PATCH] mtd: mtk-nor: adjust sequence of trigger function and assignment function Bayi Cheng
2015-12-18  2:35 ` Bayi Cheng

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