[PATCH] fsi: aspeed: Reset master errors after CFAM reset

[Eddie James]

It has been observed that sometimes the FSI master will return all 0xffs
after a CFAM has been taken out of reset, without presenting any error.
Resetting the FSI master errors resolves the issue.

Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
 drivers/fsi/fsi-master-aspeed.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index 7cec1772820d..5eccab175e86 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -454,6 +454,8 @@ static ssize_t cfam_reset_store(struct device *dev, struct device_attribute *att
 	gpiod_set_value(aspeed->cfam_reset_gpio, 1);
 	usleep_range(900, 1000);
 	gpiod_set_value(aspeed->cfam_reset_gpio, 0);
+	usleep_range(900, 1000);
+	opb_writel(aspeed, ctrl_base + FSI_MRESP0, cpu_to_be32(FSI_MRESP_RST_ALL_MASTER));
 	mutex_unlock(&aspeed->lock);
 	trace_fsi_master_aspeed_cfam_reset(false);
 
-- 
2.31.1