diff mbox series

[U-Boot,v3,3/3] net: designware: Add reset ctrl to driver

Message ID 1525749566-50769-4-git-send-email-ley.foon.tan@intel.com
State Changes Requested
Delegated to: Tom Rini
Headers show
Series drivers: Add reset ctrl to drivers | expand

Commit Message

Ley Foon Tan May 8, 2018, 3:19 a.m. UTC
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>
---
 drivers/net/designware.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

Comments

Simon Glass May 13, 2018, 10:01 p.m. UTC | #1
On 8 May 2018 at 13:19, Ley Foon Tan <ley.foon.tan@intel.com> wrote:
> 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>
> ---
>  drivers/net/designware.c |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>
Joe Hershberger May 15, 2018, 9:08 p.m. UTC | #2
On Mon, May 7, 2018 at 10:19 PM, Ley Foon Tan <ley.foon.tan@intel.com> wrote:
> 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>

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Ley Foon Tan May 24, 2018, 2:22 a.m. UTC | #3
On Wed, May 16, 2018 at 5:08 AM, Joe Hershberger <joe.hershberger@ni.com> wrote:
> On Mon, May 7, 2018 at 10:19 PM, Ley Foon Tan <ley.foon.tan@intel.com> wrote:
>> 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>
>
> Acked-by: Joe Hershberger <joe.hershberger@ni.com>

Hi Joe

Will you merge this patch to mainline?

Regards
Ley Foon
Joe Hershberger June 12, 2018, 8:50 p.m. UTC | #4
On Wed, May 23, 2018 at 9:22 PM, Ley Foon Tan <lftan.linux@gmail.com> wrote:
> On Wed, May 16, 2018 at 5:08 AM, Joe Hershberger <joe.hershberger@ni.com> wrote:
>> On Mon, May 7, 2018 at 10:19 PM, Ley Foon Tan <ley.foon.tan@intel.com> wrote:
>>> 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>
>>
>> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
>
> Hi Joe
>
> Will you merge this patch to mainline?

OK... it was assigned to Tom in patchwork, but I moved it to me.

-Joe
diff mbox series

Patch

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index cf12521..6797691 100644
--- 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>
@@ -664,6 +665,7 @@  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;
 
@@ -710,6 +712,12 @@  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,