[PATCH] spi/zynqmp_gqspi.c: Use a sane timeout value in milliseconds

[Mike Looijmans]

The timeout passed to wait_for_bit... is in milliseconds, not in CPU cycles
or something similar what the setting suggested.

Rename the constant to GQSPI_TIMEOUT_MS to make it clear that the timeout
is in milliseconds.

Set the timeout to 10 seconds. You'll be hard pressed to find a NOR flash
that this controller cannot read front to end in 10 seconds in a reasonable
configuration (i.e. a speed of 100MHz or more).

Signed-off-by: Mike Looijmans <mike.looijmans at topic.nl>
---
 drivers/spi/zynqmp_gqspi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/zynqmp_gqspi.c b/drivers/spi/zynqmp_gqspi.c
index a72986be90..596a6a4eef 100644
--- a/drivers/spi/zynqmp_gqspi.c
+++ b/drivers/spi/zynqmp_gqspi.c
@@ -84,7 +84,7 @@
 #define GQSPI_MAX_BAUD_RATE_VAL		7
 #define GQSPI_DFLT_BAUD_RATE_VAL	2
 
-#define GQSPI_TIMEOUT			100000000
+#define GQSPI_TIMEOUT_MS		10000
 
 #define GQSPI_BAUD_DIV_SHIFT		2
 #define GQSPI_LPBK_DLY_ADJ_LPBK_SHIFT	5
@@ -228,7 +228,7 @@ static void zynqmp_qspi_fill_gen_fifo(struct zynqmp_qspi_priv *priv,
 	int ret = 0;
 
 	ret = wait_for_bit_le32(&regs->isr, GQSPI_IXR_GFEMTY_MASK, 1,
-				GQSPI_TIMEOUT, 1);
+				GQSPI_TIMEOUT_MS, 1);
 	if (ret)
 		printf("%s Timeout\n", __func__);
 
@@ -406,7 +406,7 @@ static int zynqmp_qspi_fill_tx_fifo(struct zynqmp_qspi_priv *priv, u32 size)
 
 	while (size) {
 		ret = wait_for_bit_le32(&regs->isr, GQSPI_IXR_TXNFULL_MASK, 1,
-					GQSPI_TIMEOUT, 1);
+					GQSPI_TIMEOUT_MS, 1);
 		if (ret) {
 			printf("%s: Timeout\n", __func__);
 			return ret;
@@ -551,7 +551,7 @@ static int zynqmp_qspi_start_dma(struct zynqmp_qspi_priv *priv,
 	}
 
 	ret = wait_for_bit_le32(&dma_regs->dmaisr, GQSPI_DMA_DST_I_STS_DONE,
-				1, GQSPI_TIMEOUT, 1);
+				1, GQSPI_TIMEOUT_MS, 1);
 	if (ret) {
 		printf("DMA Timeout:0x%x\n", readl(&dma_regs->dmaisr));
 		return -ETIMEDOUT;
-- 
2.17.1