| Message ID | 20230612195657.245125-8-eajames@linux.ibm.com |
|---|---|
| State | Accepted |
| Commit | 52300909f4670ac552bfeb33c1355b896eac8c06 |
| Headers | show |
| Series | fsi: Miscellaneous fixes and I2C Responder driver | expand |
diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c index 437f87b4a6a3..f0a19cd451a0 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);
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. Fixes: 4a851d714ead ("fsi: aspeed: Support CFAM reset GPIO") Signed-off-by: Eddie James <eajames@linux.ibm.com> --- drivers/fsi/fsi-master-aspeed.c | 2 ++ 1 file changed, 2 insertions(+)