dts: imx: Add fixed-link property to HSC and DDC (imx53) devices

Those two boards are supposed to be run with a single u-boot binary.
There are notable differences though - HSC uses DSA switch (which
phy_id == 0x0) and DCC (DP83848C).

After the commit 3bf135b6c367
("drivers: net: phy: Ignore PHY ID 0 during PHY probing") the PHY devices
with phy_id == 0 are not created in U-Boot anymore. This caused regression
on HSC.

To fix this problem - the fec's 'fixed-link' node has been introduced and
the phy_id is not assessed anymore. This approach works on both boards.

Signed-off-by: Lukasz Majewski <lukma@denx.de>

diff --git a/arch/arm/dts/imx53-kp-u-boot.dtsi b/arch/arm/dts/imx53-kp-u-boot.dtsi
index acab9b3657e7e37bb06ec502552b36b5b2cd053f..a112db9d1ae830255903a1a3fa4e480d180585c3 100644 (file)
--- a/arch/arm/dts/imx53-kp-u-boot.dtsi
+++ b/arch/arm/dts/imx53-kp-u-boot.dtsi
@@ -5,6 +5,13 @@
  * SPDX-License-Identifier:     GPL-2.0+ or X11
  */
 
+&fec {
+       fixed-link { /* RMII fixed link for both HSC|DDC */
+               speed = <100>;
+               full-duplex;
+       };
+};
+
 &pmic {
        u-boot,i2c-transaction-bytes = <3>;
 };