try init micrel phy with RGMII GTX_CLK = +0.96

4f0864cd · Peter Jansweijer · a7422e4a · 4f0864cd
Commit 4f0864cd authored Apr 07, 2020 by Peter Jansweijer
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system-user.dtsi .../meta-user/recipes-bsp/device-tree/files/system-user.dtsi +3 -1

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--- a/sw/embedded/testos/project-spec/meta-user/recipes-bsp/device-tree/files/system-user.dtsi
+++ b/sw/embedded/testos/project-spec/meta-user/recipes-bsp/device-tree/files/system-user.dtsi
@@ -24,8 +24,10 @@
   phy0: ethernet-phy@0 {
    comptaible = "micrel,ksz9031";
    device_type = "ethernet-phy";
-    txc-skew-ps = <960>;
    reg = <0>;
+    /* txc-skew-ps = <960>; */
+	/* see Micrel KSZ9031 datasheet par. 3.9.3 and table 3.4 & 3.5 */
+	micrel,reg-init = <0xd 0x2 0xe 0x8 0xd 0x4002 0xe 0x03ef>;
   };
  }; 
 };