From: Yang Li <yang.li@amlogic.com>

User-space applications (e.g., PipeWire) depend on
ISO-formatted timestamps for precise audio sync.

Signed-off-by: Yang Li <yang.li@amlogic.com>
---
Changes in v2:
- Support SOCK_RCVTSTAMPNS via CMSG for ISO sockets
- Link to v1: https://lore.kernel.org/r/20250429-iso_ts-v1-1-e586f30de6cb@amlogic.com
---
 net/bluetooth/iso.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index fc22782cbeeb..6927c593a1d6 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -2308,6 +2308,9 @@ void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
 				goto drop;
 			}
 
+			/* Record the timestamp to skb*/
+			skb->skb_mstamp_ns = le32_to_cpu(hdr->ts);
+
 			len = __le16_to_cpu(hdr->slen);
 		} else {
 			struct hci_iso_data_hdr *hdr;

---
base-commit: 3bc46213b81278f3a9df0324768e152de71eb9fe
change-id: 20250421-iso_ts-c82a300ae784

Best regards,
-- 
Yang Li <yang.li@amlogic.com>