From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Date: Fri, 28 Mar 2014 06:55:57 +0000 (+0530)
Subject: spi: zynq_qspi: Fix BAUD_RATE_DIV calculation
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=85525d938cf3afa4ef1b6258d87c628c41c63b9d;p=thirdparty%2Fu-boot.git

spi: zynq_qspi: Fix BAUD_RATE_DIV calculation

Correct the baud rate divisor calculation by looping
until baud_rate_val < 7 instead of 8 as 8 is an invalid
baud rate divisor.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c
index 6a30c4a685c..2332f23476d 100644
--- a/drivers/spi/zynq_qspi.c
+++ b/drivers/spi/zynq_qspi.c
@@ -458,7 +458,7 @@ static int zynq_qspi_setup_transfer(struct spi_device *qspi,
 	/* Set the clock frequency */
 	if (zqspi->speed_hz != req_hz) {
 		baud_rate_val = 0;
-		while ((baud_rate_val < 8) &&
+		while ((baud_rate_val < 7) &&
 			(zqspi->input_clk_hz / (2 << baud_rate_val)) > req_hz) {
 				baud_rate_val++;
 		}