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armv8/ls1043ardb: RGMII ports require internal delay 

The correct setting for the RGMII ports on LS1043ARDB is to
enable delay on both Rx and Tx so the interface mode used must
be PHY_INTERFACE_MODE_RGMII_ID. There is a pull-up that turns
on Rx internal delay by default and the u-boot does not
override that (yet) so in u-boot the interface is functional.
In Linux the PHY driver is clearing the Rx delay for the
"rgmii-txid" mode and the reception does not work.
Changing the RGMII mode to internal delay here ensures that
device tree fix-ups for the PHY connection type turn on both
Tx and Rx internal delay in Linux.

Fixes: 5a78a472f6 ("armv8/ls1043a: RGMII PHY requires internal
	delay on Tx")
Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Madalin Bucur 2020-03-12 14:53:45 +02:00 committed by Priyanka Jain
parent e219d7d0f1
commit 00160cf32e
1 changed files with 2 additions and 2 deletions
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4
drivers/net/fm/ls1043.c
View File

@ -65,12 +65,12 @@ phy_interface_t fman_port_enet_if(enum fm_port port)
if (port == FM1_DTSEC3)
if ((rcwsr13 & FSL_CHASSIS2_RCWSR13_EC1) ==
FSL_CHASSIS2_RCWSR13_EC1_DTSEC3_RGMII) {
return PHY_INTERFACE_MODE_RGMII_TXID;
return PHY_INTERFACE_MODE_RGMII_ID;
}
if (port == FM1_DTSEC4)
if ((rcwsr13 & FSL_CHASSIS2_RCWSR13_EC2) ==
FSL_CHASSIS2_RCWSR13_EC2_DTSEC4_RGMII) {
return PHY_INTERFACE_MODE_RGMII_TXID;
return PHY_INTERFACE_MODE_RGMII_ID;
}
/* handle SGMII */