[U-Boot] [UBOOT][PATCH 5/5] am43xx: add delay before xfer

[Sourav Poddar]

Without this delay, write/read is failing.
Looks like, the WIP always remain set and hence a timeout
occurs leading to the error.

Signed-off-by: Sourav Poddar <sourav.poddar at ti.com>
---
Hi Jagan,
This patch seems to be necessary for read/write.
I tested by changing few timing variables, but it did not help.
The same driver works on J6 with a differnet flash(S25FL256S).
Is any one tested macronix flash at uboot?

 drivers/spi/ti_qspi.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/spi/ti_qspi.c b/drivers/spi/ti_qspi.c
index 5666250..aa7b6ae 100644
--- a/drivers/spi/ti_qspi.c
+++ b/drivers/spi/ti_qspi.c
@@ -285,6 +285,9 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
 		qslave->cmd |= QSPI_3_PIN;
 	qslave->cmd |= 0xfff;
 
+#ifdef CONFIG_AM43XX
+	udelay(100);
+#endif
 	while (words--) {
 		if (txp) {
 			debug("tx cmd %08x dc %08x data %02x\n",
-- 
1.7.1