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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2010-11-10 10:59:04 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-11-12 08:08:01 +0100 |
| commit | 2cb2a68b92eb6630e86f6f11e38f40417ee9f424 (patch) | |
| tree | cec8f695be56fc46ef5fc0380bcc8e6587467d93 /drivers | |
| parent | bb81ff75d484994a710abfc18cae37d62d3b1087 (diff) | |
| download | barebox-2cb2a68b92eb6630e86f6f11e38f40417ee9f424.tar.gz barebox-2cb2a68b92eb6630e86f6f11e38f40417ee9f424.tar.xz | |
imx nand: remove unnecessary register write
NFC_SP_EN is cleared in probe and never set again, so we do not
need to clear it in other functions again.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/nand_imx.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/mtd/nand/nand_imx.c b/drivers/mtd/nand/nand_imx.c index b49b7db240..4b749741f2 100644 --- a/drivers/mtd/nand/nand_imx.c +++ b/drivers/mtd/nand/nand_imx.c @@ -321,16 +321,10 @@ static void send_page(struct imx_nand_host *host, static void send_read_id(struct imx_nand_host *host) { struct nand_chip *this = &host->nand; - u16 tmp; /* NANDFC buffer 0 is used for device ID output */ writew(0x0, host->regs + NFC_BUF_ADDR); - /* Read ID into main buffer */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - writew(NFC_ID, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ @@ -362,7 +356,7 @@ static u16 get_dev_status(struct imx_nand_host *host) { void *main_buf = host->main_area0; u32 store; - u16 ret, tmp; + u16 ret; writew(0x0, host->regs + NFC_BUF_ADDR); @@ -373,11 +367,6 @@ static u16 get_dev_status(struct imx_nand_host *host) */ store = readl(main_buf); - /* Read status into main buffer */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - writew(NFC_STATUS, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ |