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armv8/ls1046ardb: RGMII ports require internal delay

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The correct setting for the RGMII ports on LS1046ARDB 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: cc1aa218f5 ("armv8/ls1046a: 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 14:53:46 +02:00 committed by Priyanka Jain
parent 00160cf32e
commit 4fb2264b28
1 changed files with 2 additions and 2 deletions
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4
drivers/net/fm/ls1046.c
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@ -71,12 +71,12 @@ 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, only MAC 2/5/6/9/10 available */
switch (port) {