Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...
[sfrench/cifs-2.6.git] / arch / arm / boot / dts / armada-388-clearfog.dtsi
1 /*
2  * Device Tree include file for SolidRun Clearfog 88F6828 based boards
3  *
4  *  Copyright (C) 2015 Russell King
5  *
6  * This board is in development; the contents of this file work with
7  * the A1 rev 2.0 of the board, which does not represent final
8  * production board.  Things will change, don't expect this file to
9  * remain compatible info the future.
10  *
11  * This file is dual-licensed: you can use it either under the terms
12  * of the GPL or the X11 license, at your option. Note that this dual
13  * licensing only applies to this file, and not this project as a
14  * whole.
15  *
16  *  a) This file is free software; you can redistribute it and/or
17  *     modify it under the terms of the GNU General Public License
18  *     version 2 as published by the Free Software Foundation.
19  *
20  *     This file is distributed in the hope that it will be useful
21  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
22  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  *     GNU General Public License for more details.
24  *
25  * Or, alternatively
26  *
27  *  b) Permission is hereby granted, free of charge, to any person
28  *     obtaining a copy of this software and associated documentation
29  *     files (the "Software"), to deal in the Software without
30  *     restriction, including without limitation the rights to use
31  *     copy, modify, merge, publish, distribute, sublicense, and/or
32  *     sell copies of the Software, and to permit persons to whom the
33  *     Software is furnished to do so, subject to the following
34  *     conditions:
35  *
36  *     The above copyright notice and this permission notice shall be
37  *     included in all copies or substantial portions of the Software.
38  *
39  *     THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
40  *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
41  *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
42  *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
43  *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
44  *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
45  *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
46  *     OTHER DEALINGS IN THE SOFTWARE.
47  */
48
49 #include "armada-388.dtsi"
50 #include "armada-38x-solidrun-microsom.dtsi"
51
52 / {
53         aliases {
54                 /* So that mvebu u-boot can update the MAC addresses */
55                 ethernet1 = &eth0;
56                 ethernet2 = &eth1;
57                 ethernet3 = &eth2;
58         };
59
60         chosen {
61                 stdout-path = "serial0:115200n8";
62         };
63
64         reg_3p3v: regulator-3p3v {
65                 compatible = "regulator-fixed";
66                 regulator-name = "3P3V";
67                 regulator-min-microvolt = <3300000>;
68                 regulator-max-microvolt = <3300000>;
69                 regulator-always-on;
70         };
71
72         soc {
73                 internal-regs {
74                         sata@a8000 {
75                                 /* pinctrl? */
76                                 status = "okay";
77                         };
78
79                         sata@e0000 {
80                                 /* pinctrl? */
81                                 status = "okay";
82                         };
83
84                         sdhci@d8000 {
85                                 bus-width = <4>;
86                                 cd-gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
87                                 no-1-8-v;
88                                 pinctrl-0 = <&microsom_sdhci_pins
89                                              &clearfog_sdhci_cd_pins>;
90                                 pinctrl-names = "default";
91                                 status = "okay";
92                                 vmmc = <&reg_3p3v>;
93                                 wp-inverted;
94                         };
95
96                         usb@58000 {
97                                 /* CON3, nearest  power. */
98                                 status = "okay";
99                         };
100
101                         usb3@f8000 {
102                                 /* CON7 */
103                                 status = "okay";
104                         };
105                 };
106
107                 pcie-controller {
108                         status = "okay";
109                         /*
110                          * The two PCIe units are accessible through
111                          * the mini-PCIe connectors on the board.
112                          */
113                         pcie@2,0 {
114                                 /* Port 1, Lane 0. CON3, nearest power. */
115                                 reset-gpios = <&expander0 1 GPIO_ACTIVE_LOW>;
116                                 status = "okay";
117                         };
118                 };
119         };
120 };
121
122 &eth1 {
123         /* ethernet@30000 */
124         bm,pool-long = <2>;
125         bm,pool-short = <1>;
126         buffer-manager = <&bm>;
127         phy-mode = "sgmii";
128         status = "okay";
129 };
130
131 &eth2 {
132         /* ethernet@34000 */
133         bm,pool-long = <3>;
134         bm,pool-short = <1>;
135         buffer-manager = <&bm>;
136         phy-mode = "sgmii";
137         status = "okay";
138
139         fixed-link {
140                 speed = <1000>;
141                 full-duplex;
142         };
143 };
144
145 &i2c0 {
146         /* Is there anything on this? */
147         clock-frequency = <100000>;
148         pinctrl-0 = <&i2c0_pins>;
149         pinctrl-names = "default";
150         status = "okay";
151
152         /*
153          * PCA9655 GPIO expander, up to 1MHz clock.
154          *  0-CON3 CLKREQ#
155          *  1-CON3 PERST#
156          *  2-
157          *  3-CON3 W_DISABLE
158          *  4-
159          *  5-USB3 overcurrent
160          *  6-USB3 power
161          *  7-
162          *  8-JP4 P1
163          *  9-JP4 P4
164          * 10-JP4 P5
165          * 11-m.2 DEVSLP
166          * 12-SFP_LOS
167          * 13-SFP_TX_FAULT
168          * 14-SFP_TX_DISABLE
169          * 15-SFP_MOD_DEF0
170          */
171         expander0: gpio-expander@20 {
172                 /*
173                  * This is how it should be:
174                  * compatible = "onnn,pca9655", "nxp,pca9555";
175                  * but you can't do this because of the way I2C works.
176                  */
177                 compatible = "nxp,pca9555";
178                 gpio-controller;
179                 #gpio-cells = <2>;
180                 reg = <0x20>;
181
182                 pcie1_0_clkreq {
183                         gpio-hog;
184                         gpios = <0 GPIO_ACTIVE_LOW>;
185                         input;
186                         line-name = "pcie1.0-clkreq";
187                 };
188                 pcie1_0_w_disable {
189                         gpio-hog;
190                         gpios = <3 GPIO_ACTIVE_LOW>;
191                         output-low;
192                         line-name = "pcie1.0-w-disable";
193                 };
194                 usb3_ilimit {
195                         gpio-hog;
196                         gpios = <5 GPIO_ACTIVE_LOW>;
197                         input;
198                         line-name = "usb3-current-limit";
199                 };
200                 usb3_power {
201                         gpio-hog;
202                         gpios = <6 GPIO_ACTIVE_HIGH>;
203                         output-high;
204                         line-name = "usb3-power";
205                 };
206                 m2_devslp {
207                         gpio-hog;
208                         gpios = <11 GPIO_ACTIVE_HIGH>;
209                         output-low;
210                         line-name = "m.2 devslp";
211                 };
212                 sfp_los {
213                         /* SFP loss of signal */
214                         gpio-hog;
215                         gpios = <12 GPIO_ACTIVE_HIGH>;
216                         input;
217                         line-name = "sfp-los";
218                 };
219                 sfp_tx_fault {
220                         /* SFP laser fault */
221                         gpio-hog;
222                         gpios = <13 GPIO_ACTIVE_HIGH>;
223                         input;
224                         line-name = "sfp-tx-fault";
225                 };
226                 sfp_tx_disable {
227                         /* SFP transmit disable */
228                         gpio-hog;
229                         gpios = <14 GPIO_ACTIVE_HIGH>;
230                         output-low;
231                         line-name = "sfp-tx-disable";
232                 };
233                 sfp_mod_def0 {
234                         /* SFP module present */
235                         gpio-hog;
236                         gpios = <15 GPIO_ACTIVE_LOW>;
237                         input;
238                         line-name = "sfp-mod-def0";
239                 };
240         };
241
242         /* The MCP3021 is 100kHz clock only */
243         mikrobus_adc: mcp3021@4c {
244                 compatible = "microchip,mcp3021";
245                 reg = <0x4c>;
246         };
247
248         /* Also something at 0x64 */
249 };
250
251 &i2c1 {
252         /*
253          * Routed to SFP, mikrobus, and PCIe.
254          * SFP limits this to 100kHz, and requires an AT24C01A/02/04 with
255          *  address pins tied low, which takes addresses 0x50 and 0x51.
256          * Mikrobus doesn't specify beyond an I2C bus being present.
257          * PCIe uses ARP to assign addresses, or 0x63-0x64.
258          */
259         clock-frequency = <100000>;
260         pinctrl-0 = <&clearfog_i2c1_pins>;
261         pinctrl-names = "default";
262         status = "okay";
263 };
264
265 &pinctrl {
266         clearfog_i2c1_pins: i2c1-pins {
267                 /* SFP, PCIe, mSATA, mikrobus */
268                 marvell,pins = "mpp26", "mpp27";
269                 marvell,function = "i2c1";
270         };
271         clearfog_sdhci_cd_pins: clearfog-sdhci-cd-pins {
272                 marvell,pins = "mpp20";
273                 marvell,function = "gpio";
274         };
275         mikro_pins: mikro-pins {
276                 /* int: mpp22 rst: mpp29 */
277                 marvell,pins = "mpp22", "mpp29";
278                 marvell,function = "gpio";
279         };
280         mikro_spi_pins: mikro-spi-pins {
281                 marvell,pins = "mpp43";
282                 marvell,function = "spi1";
283         };
284         mikro_uart_pins: mikro-uart-pins {
285                 marvell,pins = "mpp24", "mpp25";
286                 marvell,function = "ua1";
287         };
288 };
289
290 &spi1 {
291         /*
292          * Add SPI CS pins for clearfog:
293          * CS0: W25Q32 (not populated on uSOM)
294          * CS1: PIC microcontroller (Pro models)
295          * CS2: mikrobus
296          */
297         pinctrl-0 = <&spi1_pins &mikro_spi_pins>;
298         pinctrl-names = "default";
299         status = "okay";
300 };
301
302 &uart1 {
303         /* mikrobus uart */
304         pinctrl-0 = <&mikro_uart_pins>;
305         pinctrl-names = "default";
306         status = "okay";
307 };