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 ---
arch/arm/dts/imx53-kp-u-boot.dtsi | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm/dts/imx53-kp-u-boot.dtsi b/arch/arm/dts/imx53-kp-u-boot.dtsi index acab9b3657..a112db9d1a 100644 --- 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>; };