add more interfaces

diff --git a/shakti/m_class/RGMII.mdwn b/shakti/m_class/RGMII.mdwn
new file mode 100644 (file)
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+++ b/shakti/m_class/RGMII.mdwn
@@ -0,0 +1,4 @@
+# RGMII Gigabit Ethernet PHY
+
+* 
+* <https://github.com/alexforencich/verilog-ethernet/blob/master/rtl/eth_mac_1g_rgmii.v>