linux/arch/arm/boot/dts/ls1021a-twr.dts
Vladimir Oltean c7861adbe3 ARM: dts: ls1021: Fix SGMII PCS link remaining down after PHY disconnect
Each eTSEC MAC has its own TBI (SGMII) PCS and private MDIO bus.
But due to a DTS oversight, both SGMII-compatible MACs of the LS1021 SoC
are pointing towards the same internal PCS. Therefore nobody is
controlling the internal PCS of eTSEC0.

Upon initial ndo_open, the SGMII link is ok by virtue of U-boot
initialization. But upon an ifdown/ifup sequence, the code path from
ndo_open -> init_phy -> gfar_configure_serdes does not get executed for
the PCS of eTSEC0 (and is executed twice for MAC eTSEC1). So the SGMII
link remains down for eTSEC0. On the LS1021A-TWR board, to signal this
failure condition, the PHY driver keeps printing
'803x_aneg_done: SGMII link is not ok'.

Also, it changes compatible of mdio0 to "fsl,etsec2-mdio" to match
mdio1 device.

Fixes: 055223d4d2 ("ARM: dts: ls1021a: Enable the eTSEC ports on QDS and TWR")
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-04-21 15:51:28 +08:00

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/*
* Copyright 2013-2014 Freescale Semiconductor, Inc.
* Copyright 2018 NXP
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this file; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
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* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/dts-v1/;
#include "ls1021a.dtsi"
/ {
model = "LS1021A TWR Board";
compatible = "fsl,ls1021a-twr", "fsl,ls1021a";
aliases {
enet2_rgmii_phy = &rgmii_phy1;
enet0_sgmii_phy = &sgmii_phy2;
enet1_sgmii_phy = &sgmii_phy0;
};
sys_mclk: clock-mclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <24576000>;
};
regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;
reg_3p3v: regulator@0 {
compatible = "regulator-fixed";
reg = <0>;
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
};
sound {
compatible = "simple-audio-card";
simple-audio-card,format = "i2s";
simple-audio-card,widgets =
"Microphone", "Microphone Jack",
"Headphone", "Headphone Jack",
"Speaker", "Speaker Ext",
"Line", "Line In Jack";
simple-audio-card,routing =
"MIC_IN", "Microphone Jack",
"Microphone Jack", "Mic Bias",
"LINE_IN", "Line In Jack",
"Headphone Jack", "HP_OUT",
"Speaker Ext", "LINE_OUT";
simple-audio-card,cpu {
sound-dai = <&sai1>;
frame-master;
bitclock-master;
};
simple-audio-card,codec {
sound-dai = <&codec>;
frame-master;
bitclock-master;
};
};
panel: panel {
compatible = "nec,nl4827hc19-05b";
port {
panel_in: endpoint {
remote-endpoint = <&dcu_out>;
};
};
};
};
&dcu {
status = "okay";
port {
dcu_out: endpoint {
remote-endpoint = <&panel_in>;
};
};
};
&dspi1 {
bus-num = <0>;
status = "okay";
dspiflash: s25fl064k@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spansion,s25fl064k";
spi-max-frequency = <16000000>;
spi-cpol;
spi-cpha;
reg = <0>;
};
};
&enet0 {
tbi-handle = <&tbi0>;
phy-handle = <&sgmii_phy2>;
phy-connection-type = "sgmii";
status = "okay";
};
&enet1 {
tbi-handle = <&tbi1>;
phy-handle = <&sgmii_phy0>;
phy-connection-type = "sgmii";
status = "okay";
};
&enet2 {
phy-handle = <&rgmii_phy1>;
phy-connection-type = "rgmii-id";
status = "okay";
};
&i2c0 {
status = "okay";
ina220@40 {
compatible = "ti,ina220";
reg = <0x40>;
shunt-resistor = <1000>;
};
ina220@41 {
compatible = "ti,ina220";
reg = <0x41>;
shunt-resistor = <1000>;
};
};
&i2c1 {
status = "okay";
codec: sgtl5000@a {
#sound-dai-cells = <0>;
compatible = "fsl,sgtl5000";
reg = <0x0a>;
VDDA-supply = <&reg_3p3v>;
VDDIO-supply = <&reg_3p3v>;
clocks = <&sys_mclk>;
};
};
&ifc {
#address-cells = <2>;
#size-cells = <1>;
/* NOR Flash on board */
ranges = <0x0 0x0 0x0 0x60000000 0x08000000>;
status = "okay";
nor@0,0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "cfi-flash";
reg = <0x0 0x0 0x8000000>;
big-endian;
bank-width = <2>;
device-width = <1>;
};
};
&lpuart0 {
status = "okay";
};
&mdio0 {
sgmii_phy0: ethernet-phy@0 {
reg = <0x0>;
};
rgmii_phy1: ethernet-phy@1 {
reg = <0x1>;
};
sgmii_phy2: ethernet-phy@2 {
reg = <0x2>;
};
tbi0: tbi-phy@1f {
reg = <0x1f>;
device_type = "tbi-phy";
};
};
&mdio1 {
tbi1: tbi-phy@1f {
reg = <0x1f>;
device_type = "tbi-phy";
};
};
&esdhc {
status = "okay";
};
&sai1 {
status = "okay";
};
&sata {
status = "okay";
};
&uart0 {
status = "okay";
};
&uart1 {
status = "okay";
};
&can0 {
status = "okay";
};
&can1 {
status = "okay";
};
&can2 {
status = "disabled";
};
&can3 {
status = "disabled";
};