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net: designware: Add reset ctrl to driver

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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>
This commit is contained in:
Ley Foon Tan 2018-06-14 18:45:23 +08:00 committed by Tom Rini
parent b051eecbda
commit 495c70f9df
1 changed files with 8 additions and 0 deletions
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8
drivers/net/designware.c
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@ -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,