From f0e970fd2a5f802f7f2553a13a2f1e4e4bf7d5ee Mon Sep 17 00:00:00 2001
From: Stefan Chulski <stefanc@marvell.com>
Date: Wed, 9 Aug 2017 10:37:47 +0300
Subject: [PATCH] net: mvpp2x: decrease size of AGGR_TXQ and CPU_DESC_CHUNK
U-boot use single physical tx queue with size 16 descriptors.
So aggregated tx queue size should be equal to physical tx queue
and cpu descriptor chunk(number of descriptors delivered from
physical tx queue to aggregated tx queue by one chunk) shouldn't be
larger than physical tx queue.
Fix:
Set AGGR_TXQ and CPU_DESC_CHUNK to be 16 descriptors, same as
physical TXQ.
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Tested-by: iSoC Platform CI <ykjenk@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
Reviewed-by: Igal Liberman <igall@marvell.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Stefan Roese <sr@denx.de>
---
drivers/net/mvpp2.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
index 426b2c2dce2..355eb39293b 100644
--- a/drivers/net/mvpp2.c
+++ b/drivers/net/mvpp2.c
@@ -617,10 +617,10 @@ enum mv_netc_lanes {
#define MVPP2_MAX_TXD 16
/* Amount of Tx descriptors that can be reserved at once by CPU */
-#define MVPP2_CPU_DESC_CHUNK 64
+#define MVPP2_CPU_DESC_CHUNK 16
/* Max number of Tx descriptors in each aggregated queue */
-#define MVPP2_AGGR_TXQ_SIZE 256
+#define MVPP2_AGGR_TXQ_SIZE 16
/* Descriptor aligned size */
#define MVPP2_DESC_ALIGNED_SIZE 32
--
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