net: designware: Add reset ctrl to driver

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@intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 10a8709..19db0a8 100644 (file)
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -15,6 +15,7 @@
 #include <miiphy.h>
 #include <malloc.h>
 #include <pci.h>
+#include <reset.h>
 #include <linux/compiler.h>
 #include <linux/err.h>
 #include <linux/kernel.h>
@@ -673,6 +674,7 @@ int designware_eth_probe(struct udevice *dev)
        u32 iobase = pdata->iobase;
        ulong ioaddr;
        int ret;
+       struct reset_ctl_bulk reset_bulk;
 #ifdef CONFIG_CLK
        int i, err, clock_nb;
 
@@ -719,6 +721,12 @@ int designware_eth_probe(struct udevice *dev)
        }
 #endif
 
+       ret = reset_get_bulk(dev, &reset_bulk);
+       if (ret)
+               dev_warn(dev, "Can't get reset: %d\n", ret);
+       else
+               reset_deassert_bulk(&reset_bulk);
+
 #ifdef CONFIG_DM_PCI
        /*
         * If we are on PCI bus, either directly attached to a PCI root port,