From b6bfb8971dd039a60e1cff1895ab9be8be0915b3 Mon Sep 17 00:00:00 2001 From: Jon Lin Date: Tue, 19 Oct 2021 10:40:53 +0800 Subject: [PATCH] nvme: Enable FUA 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 Reviewed-by: Stefan Agner --- 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; -- 2.39.5