* [PATCH] mtd: mtk-nor: adjust sequence of trigger function and assignment function
@ 2015-12-18 2:35 Bayi Cheng
0 siblings, 0 replies; only message in thread
From: Bayi Cheng @ 2015-12-18 2:35 UTC (permalink / raw)
To: David Woodhouse, Brian Norris
Cc: Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
Matthias Brugger, Daniel Kurtz, Sascha Hauer, devicetree,
linux-arm-kernel, linux-mediatek, linux-kernel, linux-mtd,
srv_heupstream, Bayi Cheng
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
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