* [U-Boot] [PATCH] drivers/net/phy: implement fallback mechanism for negative phy adresses
@ 2019-03-29 6:03 Hannes Schmelzer
2019-03-29 6:08 ` Hannes Schmelzer
2019-03-29 8:23 ` Michal Simek
0 siblings, 2 replies; 3+ messages in thread
From: Hannes Schmelzer @ 2019-03-29 6:03 UTC (permalink / raw)
To: u-boot
Negative phy-addresses can occour if the caller function was not able to
determine a valid phy address (from device-tree for example). In this
case we catch this here and search for ANY phy device on the given mdio-
bus.
Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
---
drivers/net/phy/phy.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 0c8b29d..916b525 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -922,13 +922,14 @@ struct phy_device *phy_connect(struct mii_dev *bus, int addr,
#endif
{
struct phy_device *phydev = NULL;
+ uint mask = (addr > 0) ? (0x1 << addr) : 0xffffffff;
#ifdef CONFIG_PHY_FIXED
phydev = phy_connect_fixed(bus, dev, interface);
#endif
if (!phydev)
- phydev = phy_find_by_mask(bus, 1 << addr, interface);
+ phydev = phy_find_by_mask(bus, mask, interface);
if (phydev)
phy_connect_dev(phydev, dev);
--
2.7.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [U-Boot] [PATCH] drivers/net/phy: implement fallback mechanism for negative phy adresses
2019-03-29 6:03 [U-Boot] [PATCH] drivers/net/phy: implement fallback mechanism for negative phy adresses Hannes Schmelzer
@ 2019-03-29 6:08 ` Hannes Schmelzer
2019-03-29 8:23 ` Michal Simek
1 sibling, 0 replies; 3+ messages in thread
From: Hannes Schmelzer @ 2019-03-29 6:08 UTC (permalink / raw)
To: u-boot
On 3/29/19 7:03 AM, Hannes Schmelzer wrote:
> Negative phy-addresses can occour if the caller function was not able to
> determine a valid phy address (from device-tree for example). In this
> case we catch this here and search for ANY phy device on the given mdio-
> bus.
>
> Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
>
> ---
>
> drivers/net/phy/phy.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
> index 0c8b29d..916b525 100644
> --- a/drivers/net/phy/phy.c
> +++ b/drivers/net/phy/phy.c
> @@ -922,13 +922,14 @@ struct phy_device *phy_connect(struct mii_dev *bus, int addr,
> #endif
> {
> struct phy_device *phydev = NULL;
> + uint mask = (addr > 0) ? (0x1 << addr) : 0xffffffff;
>
> #ifdef CONFIG_PHY_FIXED
> phydev = phy_connect_fixed(bus, dev, interface);
> #endif
>
> if (!phydev)
> - phydev = phy_find_by_mask(bus, 1 << addr, interface);
> + phydev = phy_find_by_mask(bus, mask, interface);
>
> if (phydev)
> phy_connect_dev(phydev, dev);
This fallback is only useful if the board has absolutely no description
of the phy connected to some MAC.
With some drivers, like the MXC_FEC, it is possible to configure
a phy-address within the board header.
In days where DM is more and more used, i would suggest having
a meaningful device-tree which also describes the connected ethernet-phy.
cheers,
Hannes
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] [PATCH] drivers/net/phy: implement fallback mechanism for negative phy adresses
2019-03-29 6:03 [U-Boot] [PATCH] drivers/net/phy: implement fallback mechanism for negative phy adresses Hannes Schmelzer
2019-03-29 6:08 ` Hannes Schmelzer
@ 2019-03-29 8:23 ` Michal Simek
1 sibling, 0 replies; 3+ messages in thread
From: Michal Simek @ 2019-03-29 8:23 UTC (permalink / raw)
To: u-boot
Please fix subject net: phy: should be fine.
On 29. 03. 19 7:03, Hannes Schmelzer wrote:
> Negative phy-addresses can occour if the caller function was not able to
> determine a valid phy address (from device-tree for example). In this
> case we catch this here and search for ANY phy device on the given mdio-
> bus.
>
> Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
>
> ---
>
> drivers/net/phy/phy.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
> index 0c8b29d..916b525 100644
> --- a/drivers/net/phy/phy.c
> +++ b/drivers/net/phy/phy.c
> @@ -922,13 +922,14 @@ struct phy_device *phy_connect(struct mii_dev *bus, int addr,
> #endif
> {
> struct phy_device *phydev = NULL;
> + uint mask = (addr > 0) ? (0x1 << addr) : 0xffffffff;
s/0x1/1/
>
> #ifdef CONFIG_PHY_FIXED
> phydev = phy_connect_fixed(bus, dev, interface);
> #endif
>
> if (!phydev)
> - phydev = phy_find_by_mask(bus, 1 << addr, interface);
> + phydev = phy_find_by_mask(bus, mask, interface);
>
> if (phydev)
> phy_connect_dev(phydev, dev);
>
When subject and that stuff above are fixed please add
Tested-by: Michal Simek <michal.simek@xilinx.com>
And then we can remove our code from zynq_gem (phy_dectection()).
Thanks,
Michal
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-03-29 6:03 [U-Boot] [PATCH] drivers/net/phy: implement fallback mechanism for negative phy adresses Hannes Schmelzer
2019-03-29 6:08 ` Hannes Schmelzer
2019-03-29 8:23 ` Michal Simek
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