The EthernetAVB should not depend on the bootloader to setup correct drive-strength values. Values for drive-strength where found by examine the registers after the bootloader have configured the registers and successfully used the EthernetAVB.
Signed-off-by: Niklas Söderlund <[email protected]> --- arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts | 28 ++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts index b1eab68..7f49d19 100644 --- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts +++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts @@ -225,8 +225,32 @@ }; avb_pins: avb { - groups = "avb_mdc"; - function = "avb"; + mux { + groups = "avb_mdc", "avb_mii"; + function = "avb"; + }; + + pins_mdc { + groups = "avb_mdc"; + drive-strength = <24>; + }; + + pins_mii_tx { + pins = "PIN_AVB_TX_CTL", "PIN_AVB_TXC", "PIN_AVB_TD0", + "PIN_AVB_TD1", "PIN_AVB_TD2", "PIN_AVB_TD3"; + drive-strength = <12>; + }; + + pins_mii_rx { + pins = "PIN_AVB_RX_CTL", "PIN_AVB_RXC", "PIN_AVB_RD0", + "PIN_AVB_RD1", "PIN_AVB_RD2", "PIN_AVB_RD3"; + drive-strength = <24>; + }; + + pins_mii_clk { + pins = "PIN_AVB_TXCREFCLK"; + drive-strength = <24>; + }; }; du_pins: du { -- 2.10.2
