From 875a59c9a9e584d99d8e9e5aa8435ec9300bfe91 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Thu, 8 Jan 2026 16:05:08 +0100
Subject: [PATCH] net: airoha: npu: Init BA memory region if provided via DTS

Initialize NPU Block Ack memory region if reserved via DTS.
Block Ack memory region is used by NPU MT7996 (Eagle) offloading.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260108-airoha-ba-memory-region-v3-2-bf1814e5dcc4@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 drivers/net/ethernet/airoha/airoha_npu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -519,6 +519,14 @@ static int airoha_npu_wlan_init_memory(s
 	if (err)
 		return err;
 
+	if (of_property_match_string(npu->dev->of_node, "memory-region-names",
+				     "ba") >= 0) {
+		cmd = WLAN_FUNC_SET_WAIT_DRAM_BA_NODE_ADDR;
+		err = airoha_npu_wlan_set_reserved_memory(npu, 0, "ba", cmd);
+		if (err)
+			return err;
+	}
+
 	cmd = WLAN_FUNC_SET_WAIT_IS_FORCE_TO_CPU;
 	return airoha_npu_wlan_msg_send(npu, 0, cmd, &val, sizeof(val),
 					GFP_KERNEL);
