Author: kevans
Date: Mon Jan 21 14:35:36 2019
New Revision: 343255
URL: https://svnweb.freebsd.org/changeset/base/343255
Log:
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.
MFC after: 1 week
Modified:
head/sys/arm/allwinner/if_awg.c
Modified: head/sys/arm/allwinner/if_awg.c
==============================================================================
--- head/sys/arm/allwinner/if_awg.c Mon Jan 21 08:24:49 2019
(r343254)
+++ head/sys/arm/allwinner/if_awg.c Mon Jan 21 14:35:36 2019
(r343255)
@@ -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");
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