From 50eb243762f143cf56878af10c5cc3f96d6e051a Mon Sep 17 00:00:00 2001
From: Seppo Takalo <seppo.takalo@arm.com>
Date: Fri, 21 Dec 2018 15:07:43 +0200
Subject: [PATCH] Don't consume 36 kB just for Ethernet buffers.

Kintis EMAC is consuming 16 rinbuffers for input, and 8 buffers for output.
This is over-use because input packets are immediately allocated from
heap when passed to LwIP. Therefore the number can be creatly reduced.
---
 .../emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json          | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json b/features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json
index 2e1ef2e320..102de42f02 100644
--- a/features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json
+++ b/features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json
@@ -1,7 +1,7 @@
 {
     "name": "kinetis-emac",
     "config": {
-        "rx-ring-len": 16,
-        "tx-ring-len": 8
+        "rx-ring-len": 2,
+        "tx-ring-len": 1
     }
 }