[U-Boot] [PATCH 3/3] net: designware: Add reset ctrl to driver

[Ley Foon Tan]

Add code to reset all reset signals as in Ethernet DT node. A reset property is an optional feature,
so only print out a warning and do not fail if a reset property is not present.

If a reset property is discovered, then use it to deassert, thus bringing the
IP out of reset.

Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
---
 drivers/net/designware.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 43670a7..e34f3fb 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -16,6 +16,7 @@
 #include <miiphy.h>
 #include <malloc.h>
 #include <pci.h>
+#include <reset.h>
 #include <linux/compiler.h>
 #include <linux/err.h>
 #include <linux/kernel.h>
@@ -713,6 +714,18 @@ int designware_eth_probe(struct udevice *dev)
 	}
 #endif
 
+#ifdef CONFIG_DM_RESET
+	struct reset_ctl_bulk reset_bulk;
+
+	ret = reset_get_bulk(dev, &reset_bulk);
+	if (ret) {
+		dev_warn(dev, "Can't get reset: %d\n", ret);
+		return;
+	}
+
+	reset_deassert_bulk(&reset_bulk);
+#endif
+
 #ifdef CONFIG_DM_PCI
 	/*
 	 * If we are on PCI bus, either directly attached to a PCI root port,
-- 
1.7.1