commit e5a70d4850b69c3bb5e03c699e238a786d87f371
author Michal Simek <michal.simek@xilinx.com> Fri Oct 15 15:03:29 2021 +0200
committer Michal Simek <michal.simek@xilinx.com> Thu Oct 21 08:53:55 2021 +0200
tree 6025465af09d03c7ad30b20aff1653d4856c3783
parent d959bfc4b671f014e79069339326bb65b31b9688

net: gem: Disable broadcast setting

There is no need for GEM to accepts broadcast packets because they are not
handled by u-boot anyway. That's why use HW IP feature and don't waste time
on these packats which will be dropped anyway.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Link: https://lore.kernel.org/r/0e236c3a6514a2a633ef3a5b71a967c46f7fbae7.1634303007.git.michal.simek@xilinx.com

drivers/net/zynq_gem.c

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index ff59982..c309c3c 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -60,6 +60,7 @@
 #define ZYNQ_GEM_NWCFG_SPEED100		0x00000001 /* 100 Mbps operation */
 #define ZYNQ_GEM_NWCFG_SPEED1000	0x00000400 /* 1Gbps operation */
 #define ZYNQ_GEM_NWCFG_FDEN		0x00000002 /* Full Duplex mode */
+#define ZYNQ_GEM_NWCFG_NO_BRDC		BIT(5) /* No broadcast */
 #define ZYNQ_GEM_NWCFG_FSREM		0x00020000 /* FCS removal */
 #define ZYNQ_GEM_NWCFG_SGMII_ENBL	0x08000000 /* SGMII Enable */
 #define ZYNQ_GEM_NWCFG_PCS_SEL		0x00000800 /* PCS select */
@@ -77,6 +78,7 @@
 
 #define ZYNQ_GEM_NWCFG_INIT		(ZYNQ_GEM_DBUS_WIDTH | \
 					ZYNQ_GEM_NWCFG_FDEN | \
+					ZYNQ_GEM_NWCFG_NO_BRDC | \
 					ZYNQ_GEM_NWCFG_FSREM | \
 					ZYNQ_GEM_NWCFG_MDCCLKDIV)