Most NVME devcies maintain data in internal cache for an uncertain
times, and u-boot has no method to force NVME to flush cache.
So this patch adds FUA to avoid data loss caused by power off after data
programming.
Signed-off-by: Jon Lin <jon....@rock-chips.com>
Reviewed-by: Stefan Agner <ste...@agner.ch>
---
Changes in v3:
Only enable FUA when vwc is enabled
drivers/nvme/nvme.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c
index 3c529a2fce..9623c896a1 100644
--- a/drivers/nvme/nvme.c
+++ b/drivers/nvme/nvme.c
@@ -762,6 +762,10 @@ static ulong nvme_blk_rw(struct udevice *udev, lbaint_t
blknr,
c.rw.appmask = 0;
c.rw.metadata = 0;
+ /* Enable FUA for data integrity if vwc is enabled */
+ if (dev->vwc)
+ c.rw.control |= NVME_RW_FUA;
+
while (total_lbas) {
if (total_lbas < lbas) {
lbas = (u16)total_lbas;
--
2.17.1
