From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jagan Teki Date: Mon, 28 Dec 2015 14:30:37 +0530 Subject: [U-Boot] [PATCH v3 4/4] sf: Write quad bit along with read status In-Reply-To: <1451293237-11122-1-git-send-email-jteki@openedev.com> References: <1451293237-11122-1-git-send-email-jteki@openedev.com> Message-ID: <1451293237-11122-4-git-send-email-jteki@openedev.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de While setting quad bit on spansion, macronix code is writing only particular quad bit this may give wrong functionality with other register bits, So this patch fix the issue where it with write previous read reg status along particular quad bit. Cc: Vignesh R Cc: Mugunthan V N Cc: Simon Glass Cc: Bin Meng Cc: Michal Simek Cc: Siva Durga Prasad Paladugu Signed-off-by: Jagan Teki --- Changes for v3: - none Changes for v2: - none drivers/mtd/spi/spi_flash.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 56217c2..38ed115 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -843,7 +843,7 @@ static int macronix_quad_enable(struct spi_flash *flash) if (qeb_status & STATUS_QEB_MXIC) return 0; - ret = write_sr(flash, STATUS_QEB_MXIC); + ret = write_sr(flash, qeb_status | STATUS_QEB_MXIC); if (ret < 0) return ret; @@ -871,7 +871,7 @@ static int spansion_quad_enable(struct spi_flash *flash) if (qeb_status & STATUS_QEB_WINSPAN) return 0; - ret = write_cr(flash, STATUS_QEB_WINSPAN); + ret = write_cr(flash, qeb_status | STATUS_QEB_WINSPAN); if (ret < 0) return ret; -- 1.9.1