svn commit: r346036 - stable/12/sys/arm/allwinner

[Kyle Evans]

Author: kevans
Date: Mon Apr  8 17:59:42 2019
New Revision: 346036
URL: https://svnweb.freebsd.org/changeset/base/346036

Log:
  MFC r343255: awg: fix soft reset failure with no link
  
  U-Boot will leave the ephy reset de-asserted and the MAC soft reset will
  fail on these boards with internal PHY and no link established. Toggle reset
  again before proceeding to attach/init.

Modified:
  stable/12/sys/arm/allwinner/if_awg.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/arm/allwinner/if_awg.c
==============================================================================
--- stable/12/sys/arm/allwinner/if_awg.c	Mon Apr  8 17:55:04 2019	(r346035)
+++ stable/12/sys/arm/allwinner/if_awg.c	Mon Apr  8 17:59:42 2019	(r346036)
@@ -1466,6 +1466,12 @@ awg_setup_extres(device_t dev)
 		goto fail;
 	}
 	if (rst_ephy != NULL) {
+		/*
+		 * The ephy reset is left de-asserted by U-Boot.  Assert it
+		 * here to make sure that we're in a known good state going
+		 * into the PHY reset.
+		 */
+		hwreset_assert(rst_ephy);
 		error = hwreset_deassert(rst_ephy);
 		if (error != 0) {
 			device_printf(dev, "cannot de-assert ephy reset\n");