1// SPDX-License-Identifier: GPL-2.0
2/*
3 * dts file for Hisilicon HiKey970 Development Board
4 *
5 * Copyright (C) 2016, Hisilicon Ltd.
6 * Copyright (C) 2018, Linaro Ltd.
7 *
8 */
9
10/dts-v1/;
11
12#include "hi3670.dtsi"
13#include "hikey970-pinctrl.dtsi"
14
15/ {
16	model = "HiKey970";
17	compatible = "hisilicon,hi3670-hikey970", "hisilicon,hi3670";
18
19	aliases {
20		serial0 = &uart0;
21		serial1 = &uart1;
22		serial2 = &uart2;
23		serial3 = &uart3;
24		serial4 = &uart4;
25		serial5 = &uart5;
26		serial6 = &uart6;       /* console UART */
27	};
28
29	chosen {
30		stdout-path = "serial6:115200n8";
31	};
32
33	memory@0 {
34		device_type = "memory";
35		/* expect bootloader to fill in this region */
36		reg = <0x0 0x0 0x0 0x0>;
37	};
38};
39
40/*
41 * Legend: proper name = the GPIO line is used as GPIO
42 *         NC = not connected (pin out but not routed from the chip to
43 *              anything the board)
44 *         "[PER]" = pin is muxed for [peripheral] (not GPIO)
45 *         "" = no idea, schematic doesn't say, could be
46 *              unrouted (not connected to any external pin)
47 *         LSEC = Low Speed External Connector
48 *         HSEC = High Speed External Connector
49 *
50 * Line names are taken from "hikey970-schematics.pdf" from HiSilicon.
51 *
52 * For the lines routed to the external connectors the
53 * lines are named after the 96Boards CE Specification 1.0,
54 * Appendix "Expansion Connector Signal Description".
55 *
56 * When the 96Board naming of a line and the schematic name of
57 * the same line are in conflict, the 96Board specification
58 * takes precedence, which means that the external UART on the
59 * LSEC is named UART0 while the schematic and SoC names this
60 * UART2. This is only for the informational lines i.e. "[FOO]",
61 * the GPIO named lines "GPIO-A" thru "GPIO-L" are the only
62 * ones actually used for GPIO.
63 */
64&gpio0 {
65	/* GPIO_000-GPIO_007 */
66	gpio-line-names =
67		"",
68		"TP901", /* TEST_MODE connected to TP901 */
69		"",
70		"GPIO_003_USB_HUB_RESET_N",
71		"NC",
72		"[AP_GPS_REF_CLK]",
73		"[I2C3_SCL]",
74		"[I2C3_SDA]";
75};
76
77&gpio1 {
78	/* GPIO_008-GPIO_015 */
79	gpio-line-names =
80		"[UART0_CTS]", /* LSEC pin 3: GPIO_008_UART2_CTS_N */
81		"[UART0_RTS]", /* LSEC pin 9: GPIO_009_UART2_RTS_N */
82		"[UART0_TXD]", /* LSEC pin 5: GPIO_010_UART2_TXD */
83		"[UART0_RXD]", /* LSEC pin 7: GPIO_011_UART2_RXD */
84		"[USER_LED5]",
85		"GPIO-I", /* LSEC pin 31: GPIO_013_CAM0_RST_N */
86		"[USER_LED3]",
87		"[USER_LED4]";
88};
89
90&gpio2 {
91	/* GPIO_016-GPIO_023 */
92	gpio-line-names =
93		"GPIO-G", /* LSEC pin 29: GPIO_016_LCD_TE0 */
94		"[CSI0_MCLK]", /* HSEC pin 15: ISP_CCLK0_MCAM */
95		"[CSI1_MCLK]", /* HSEC pin 17: ISP_CCLK1_SCAM */
96		"GPIO_019_BT_ACTIVE",
97		"[I2C2_SCL]", /* HSEC pin 32: ISP_SCL0 */
98		"[I2C2_SDA]", /* HSEC pin 34: ISP_SDA0 */
99		"[I2C3_SCL]", /* HSEC pin 36: ISP_SCL1 */
100		"[I2C3_SDA]"; /* HSEC pin 38: ISP_SDA1 */
101};
102
103&gpio3 {
104	/* GPIO_024-GPIO_031 */
105	gpio-line-names =
106		"GPIO_024_WIFI_ACTIVE",
107		"GPIO_025_PERST_M.2",
108		"[I2C4_SCL]",
109		"[I2C4_SDA]",
110		"NC",
111		"GPIO-H", /* LSEC pin 30: GPIO_029_LCD_RST_N */
112		"[USER_LED1]",
113		"GPIO-L"; /* LSEC pin 34: GPIO_031 */
114};
115
116&gpio4 {
117	/* GPIO_032-GPIO_039 */
118	gpio-line-names =
119		"GPIO-K", /* LSEC pin 33: GPIO_032_CAM1_RST_N */
120		"GPIO_033_PMU1_EN",
121		"GPIO_034_USBSW_SEL",
122		/*
123		 * These two pins should be used for SD(IO) data according
124		 * to the 96boards specification but seems to be repurposed
125		 * for UART 0. They are however named according to the spec.
126		 */
127		"[SD_DAT1]", /* HSEC pin 3: GPIO_035_UART0_RXD */
128		"[SD_DAT2]", /* HSEC pin 5: GPIO_036_UART0_TXD */
129		"[UART1_RXD]", /* LSEC pin 13: DEBUG_UART6_RXD */
130		"[UART1_TXD]", /* LSEC pin 11: DEBUG_UART6_TXD */
131		"[SOC_GPS_UART3_CTS_N]"; /* TP2304 */
132};
133
134&gpio5 {
135	/* GPIO_040-GPIO_047 */
136	gpio-line-names =
137		"[SOC_GPS_UART3_RTS_N]", /* TP2302 */
138		"[SOC_GPS_UART3_RXD]", /* TP2303 */
139		"[SOC_GPS_UART3_TXD]", /* TP2305 */
140		"[SOC_BT_UART4_CTS_N]",
141		"[SOC_BT_UART4_RTS_N]",
142		"[SOC_BT_UART4_RXD]",
143		"[SOC_BT_UART4_TXD]",
144		"NC";
145};
146
147&gpio6 {
148	/* GPIO_048-GPIO_055 */
149	gpio-line-names =
150		"NC",
151		"GPIO_049_USER_LED6",
152		"GPIO_050_CAN_RST",
153		"GPIO_051_WIFI_EN",
154		"GPIO-D", /* LSEC pin 26 */
155		"GPIO-J", /* LSEC pin 32 */
156		"GPIO_054_BT_EN",
157		"[GPIO_055_SEL]";
158};
159
160&gpio7 {
161	/* GPIO_056-GPIO_063 */
162	gpio-line-names =
163		"[PCIE_PERST_L]", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
164};
165
166&gpio8 {
167	/* GPIO_064-GPIO_071 */
168	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
169};
170
171&gpio9 {
172	/* GPIO_072-GPIO_079 */
173	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
174};
175
176&gpio10 {
177	/* GPIO_080-GPIO_087 */
178	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
179};
180
181&gpio11 {
182	/* GPIO_088-GPIO_095 */
183	gpio-line-names = "NC", "NC", "NC", "NC", "NC", "NC", "NC", "NC";
184};
185
186&gpio12 {
187	/* GPIO_096-GPIO_103 */
188	gpio-line-names = "NC", "", "", "", "", "", "", "";
189};
190
191&gpio13 {
192	/* GPIO_104-GPIO_111 */
193	gpio-line-names = "", "", "", "", "", "", "", "";
194};
195
196&gpio14 {
197	/* GPIO_112-GPIO_119 */
198	gpio-line-names = "", "", "", "", "", "", "", "";
199};
200
201&gpio15 {
202	/* GPIO_120-GPIO_127 */
203	gpio-line-names = "", "", "", "", "", "", "", "";
204};
205
206&gpio16 {
207	/* GPIO_128-GPIO_135 */
208	gpio-line-names =
209		"[WL_SDIO_CLK]",
210		"[WL_SDIO_CMD]",
211		"[WL_SDIO_DATA0]",
212		"[WL_SDIO_DATA1]",
213		"[WL_SDIO_DATA2]",
214		"[WL_SDIO_DATA3]",
215		"[ETH_ISOLATE]",
216		"NC";
217};
218
219&gpio17 {
220	/* GPIO_136-GPIO_143 */
221	gpio-line-names =
222		"[MINI1CLK_EN]", "NC", "", "", "", "", "", "";
223};
224
225&gpio18 {
226	/* GPIO_144-GPIO_151 */
227	gpio-line-names =
228		"[SPI1_SCLK]", /* HSEC pin 9: GPIO_144_SPI3_CLK */
229		"[SPI1_DIN]", /* HSEC pin 11: GPIO_145_SPI3_DI */
230		"[SPI1_DOUT]", /* HSEC pin 1: GPIO_146_SPI3_DO */
231		"[SPI1_CS]", /* HSEC pin 7: GPIO_147_SPI3_CS0_N */
232		"[POWER_INT_N]",
233		"[CDMA_GPS_SYNC]",
234		"GPIO_150_PEX_INTA",
235		"GPIO_151_CAN_INT";
236};
237
238&gpio19 {
239	/* GPIO_152-GPIO_159 */
240	gpio-line-names = "", "", "", "", "", "", "", "";
241};
242
243&gpio20 {
244	/* GPIO_160-GPIO_167 */
245	gpio-line-names =
246		"[SD_CLK]",
247		"[SD_CMD]",
248		"[SD_DATA0]",
249		"[SD_DATA1]",
250		"[SD_DATA2]",
251		"[SD_DATA3]",
252		"GPIO_166_ETHCLK_EN",
253		"GPIO_167_USER_LED2";
254};
255
256&gpio21 {
257	/* GPIO_168-GPIO_175 */
258	gpio-line-names =
259		"GPIO_168_GPS_EN",
260		"GPIO-C", /* LSEC pin 25: GPIO_169_USIM1_CLK */
261		"GPIO-E", /* LSEC pin 27: GPIO_170_USIM1_RST */
262		"GPIO-B", /* LSEC pin 24: GPIO_171_USIM1_DATA */
263		"", "", "", "", "";
264};
265
266&gpio22 {
267	/* GPIO_176-GPIO_183 */
268	gpio-line-names =
269		"[PMU_PWR_HOLD]",
270		"GPIO_177_WL_WAKEUP_AP",
271		"[JTAG_TCK]",
272		"[JTAG_TMS]",
273		"[JTAG_TDI]",
274		"[JTAG_TMS]",
275		"GPIO_182_FATAL_ERR",
276		"NC";
277};
278
279&gpio23 {
280	/* GPIO_184-GPIO_191 */
281	gpio-line-names =
282		"GPIO_184_JTAG_SEL",
283		"GPIO-F", /* LSEC pin 28: GPIO_185_LCD_BL_PWM */
284		"[I2C0_SCL]", /* LSEC pin 15: GPIO_186_I2C0_SCL */
285		"[I2C0_SDA]", /* LSEC pin 17: GPIO_187_I2C0_SDA */
286		"[GPIO_188_I2C1_SCL]", /* Actual SoC I2C1_SCL */
287		"[GPIO_189_I2C1_SDA]", /* Actual SoC I2C1_SDA */
288		"[I2C1_SCL]", /* LSEC pin 19: GPIO_190_I2C2_SCL */
289		"[I2C2_SDA]"; /* LSEC pin 21: GPIO_191_I2C2_SDA */
290};
291
292&gpio24 {
293	/* GPIO_192-GPIO_199 */
294	gpio-line-names =
295		"[SD_LED]",
296		"NC",
297		"[PCM_DI]", /* LSEC pin 22: GPIO_194_I2S0_DI */
298		"[PCM_DO]", /* LSEC pin 20: GPIO_195_I2S0_DO */
299		"[PCM_CLK]", /* LSEC pin 18: GPIO_196_I2S0_XCLK */
300		"[PCM_FS]", /* LSEC pin 16: GPIO_197_I2S0_XFS */
301		"",
302		"[I2S2_DO]";
303};
304
305&gpio25 {
306	/* GPIO_200-GPIO_207 */
307	gpio-line-names =
308		"[I2S2_XCLK]",
309		"[I2S2_XFS]",
310		"GPIO_202_PERST_ETH",
311		"GPIO_203_PWRON_DET",
312		"GPIO_204_PMU1_IRQ_N",
313		"GPIO_205_SD_DET",
314		"GPIO_206_GPS_MOTION_INT",
315		"GPIO_207_HDMI_SEL";
316};
317
318&gpio26 {
319	/* GPIO_208-GPIO_215 */
320	gpio-line-names =
321		"GPIO-A", /* LSEC pin 23: GPIO_208_WAKEUP_SOC */
322		"GPIO_209_VBUS_TYPEC",
323		"NC",
324		"NC",
325		"NC",
326		"[SPI0_SCLK]", /* LSEC pin 8: GPIO_213_SPI2_CLK */
327		"[SPI0_DIN]", /* LSEC pin 10: GPIO_214_SPI2_DI */
328		"[SPI0_DOUT]"; /* LSEC pin 14: GPIO_215_SPI2_DO */
329};
330
331&gpio27 {
332	/* GPIO_216-GPIO_223 */
333	gpio-line-names =
334		"[SPI0_CS]", /* LSEC pin 12: GPIO_216_SPI2_CS0_N */
335		"GPIO_217_HDMI_PD",
336		"GPIO_218_GPS_WAKEUP_AP",
337		"GPIO_219_M.2CLK_EN",
338		"GPIO_220_PERST_MINI",
339		"GPIO_221_CC_INT",
340		"[PCIE_CLKREQ_L]",
341		"NC";
342};
343
344&gpio28 {
345	/* GPIO_224-GPIO_231 */
346	gpio-line-names =
347		"[PMU0_INT]",
348		"[SPMI_DATA]",
349		"[SPMI_CLK]",
350		"[CAN_SPI_CLK]",
351		"[CAN_SPI_DI]",
352		"[CAN_SPI_DO]",
353		"[CAN_SPI_CS]",
354		"GPIO_231_HDMI_INT";
355};
356
357&uart0 {
358	/* On High speed expansion header */
359	label = "HS-UART0";
360	status = "okay";
361};
362
363&uart2 {
364	/* On Low speed expansion header */
365	label = "LS-UART0";
366	status = "okay";
367};
368
369&uart6 {
370	/* On Low speed expansion header */
371	label = "LS-UART1";
372	status = "okay";
373};
374