On 03/27/2018 01:18 PM, Andrew Lunn wrote:

On Tue, Mar 27, 2018 at 12:31:42PM -0400, Murali Karicheri wrote:

quoted

As a preparatory patch to add support for 2u cpsw hardware found on
K2G SoC, make call to gbe_sgmii_config() conditional. This is required
since 2u uses RGMII interface instead of SGMII and to allow for driver
re-use.

Signed-off-by: Murali Karicheri <redacted>
---
 drivers/net/ethernet/ti/netcp_ethss.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c
index 56dbc0b..1dea891 100644
--- a/drivers/net/ethernet/ti/netcp_ethss.c
+++ b/drivers/net/ethernet/ti/netcp_ethss.c

@@ -2271,7 +2271,8 @@ static int gbe_slave_open(struct gbe_intf *gbe_intf)
 
 	void (*hndlr)(struct net_device *) = gbe_adjust_link;
 
-	gbe_sgmii_config(priv, slave);
+	if ((priv->ss_version == GBE_SS_VERSION_14) || IS_SS_ID_NU(priv))
+		gbe_sgmii_config(priv, slave);

Or maybe:

   if (slave->phy_node == PHY_INTERFACE_MODE_SGMII)
   	gbe_sgmii_config(priv, slave);

	Andrew
Actually, on specific cpsw hardware, driver supports specific interface. Driver also

uses link-interface DT property to configure this and link-interface can be without phy
as well. So essentially the above code looks good IMO.

I need to change this as 

if (IS_SS_ID_VER_14(priv) || IS_SS_ID_NU(priv))
    gbe_sgmii_config(priv, slave);

Based on the link-interface, driver selects the phy mode and pass it to of_phy_connect().

I will update the above in v3.
-- 
Murali Karicheri
Linux Kernel, Keystone