Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
#include <dt-bindings/pinctrl/bcm2835.h>
#include <dt-bindings/clock/bcm2835.h>
#include <dt-bindings/clock/bcm2835-aux.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/soc/bcm2835-pm.h>

/* firmware-provided startup stubs live here, where the secondary CPUs are
 * spinning.
 */
/memreserve/ 0x00000000 0x00001000;

/* This include file covers the common peripherals and configuration between
 * bcm2835 and bcm2836 implementations, leaving the CPU configuration to
 * bcm2835.dtsi and bcm2836.dtsi.
 */

/ {
	compatible = "brcm,bcm2835";
	model = "BCM2835";
	#address-cells = <1>;
	#size-cells = <1>;

	aliases {
		serial0 = &uart0;
		serial1 = &uart1;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	rmem: reserved-memory {
		#address-cells = <1>;
		#size-cells = <1>;
		ranges;

		cma: linux,cma {
			compatible = "shared-dma-pool";
			size = <0x4000000>; /* 64MB */
			reusable;
			linux,cma-default;
		};
	};

	thermal-zones {
		cpu_thermal: cpu-thermal {
			polling-delay-passive = <0>;
			polling-delay = <1000>;

			trips {
				cpu-crit {
					temperature = <90000>;
					hysteresis = <0>;
					type = "critical";
				};
			};

			cooling-maps {
			};
		};
	};

	soc {
		compatible = "simple-bus";
		#address-cells = <1>;
		#size-cells = <1>;

		system_timer: timer@7e003000 {
			compatible = "brcm,bcm2835-system-timer";
			reg = <0x7e003000 0x1000>;
			interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
			/* This could be a reference to BCM2835_CLOCK_TIMER,
			 * but we don't have the driver using the common clock
			 * support yet.
			 */
			clock-frequency = <1000000>;
		};

		txp: txp@7e004000 {
			compatible = "brcm,bcm2835-txp";
			reg = <0x7e004000 0x20>;
			interrupts = <1 11>;
		};

		clocks: cprman@7e101000 {
			compatible = "brcm,bcm2835-cprman";
			#clock-cells = <1>;
			reg = <0x7e101000 0x2000>;

			/* CPRMAN derives almost everything from the
			 * platform's oscillator.  However, the DSI
			 * pixel clocks come from the DSI analog PHY.
			 */
			clocks = <&clk_osc>,
				<&dsi0 0>, <&dsi0 1>, <&dsi0 2>,
				<&dsi1 0>, <&dsi1 1>, <&dsi1 2>;
		};

		mailbox: mailbox@7e00b880 {
			compatible = "brcm,bcm2835-mbox";
			reg = <0x7e00b880 0x40>;
			interrupts = <0 1>;
			#mbox-cells = <0>;
		};

		gpio: gpio@7e200000 {
			compatible = "brcm,bcm2835-gpio";
			reg = <0x7e200000 0xb4>;
			/*
			 * The GPIO IP block is designed for 3 banks of GPIOs.
			 * Each bank has a GPIO interrupt for itself.
			 * There is an overall "any bank" interrupt.
			 * In order, these are GIC interrupts 17, 18, 19, 20.
			 * Since the BCM2835 only has 2 banks, the 2nd bank
			 * interrupt output appears to be mirrored onto the
			 * 3rd bank's interrupt signal.
			 * So, a bank0 interrupt shows up on 17, 20, and
			 * a bank1 interrupt shows up on 18, 19, 20!
			 */
			interrupts = <2 17>, <2 18>, <2 19>, <2 20>;

			gpio-controller;
			#gpio-cells = <2>;

			interrupt-controller;
			#interrupt-cells = <2>;

			gpio-ranges = <&gpio 0 0 54>;

			/* Defines common pin muxing groups
			 *
			 * While each pin can have its mux selected
			 * for various functions individually, some
			 * groups only make sense to switch to a
			 * particular function together.
			 */
			dpi_gpio0: dpi-gpio0 {
				brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
					     12 13 14 15 16 17 18 19
					     20 21 22 23 24 25 26 27>;
				brcm,function = <BCM2835_FSEL_ALT2>;
			};
			emmc_gpio22: emmc-gpio22 {
				brcm,pins = <22 23 24 25 26 27>;
				brcm,function = <BCM2835_FSEL_ALT3>;
			};
			emmc_gpio34: emmc-gpio34 {
				brcm,pins = <34 35 36 37 38 39>;
				brcm,function = <BCM2835_FSEL_ALT3>;
				brcm,pull = <BCM2835_PUD_OFF
					     BCM2835_PUD_UP
					     BCM2835_PUD_UP
					     BCM2835_PUD_UP
					     BCM2835_PUD_UP
					     BCM2835_PUD_UP>;
			};
			emmc_gpio48: emmc-gpio48 {
				brcm,pins = <48 49 50 51 52 53>;
				brcm,function = <BCM2835_FSEL_ALT3>;
			};

			gpclk0_gpio4: gpclk0-gpio4 {
				brcm,pins = <4>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			gpclk1_gpio5: gpclk1-gpio5 {
				brcm,pins = <5>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			gpclk1_gpio42: gpclk1-gpio42 {
				brcm,pins = <42>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			gpclk1_gpio44: gpclk1-gpio44 {
				brcm,pins = <44>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			gpclk2_gpio6: gpclk2-gpio6 {
				brcm,pins = <6>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			gpclk2_gpio43: gpclk2-gpio43 {
				brcm,pins = <43>;
				brcm,function = <BCM2835_FSEL_ALT0>;
				brcm,pull = <BCM2835_PUD_OFF>;
			};

			i2c0_gpio0: i2c0-gpio0 {
				brcm,pins = <0 1>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			i2c0_gpio28: i2c0-gpio28 {
				brcm,pins = <28 29>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			i2c0_gpio44: i2c0-gpio44 {
				brcm,pins = <44 45>;
				brcm,function = <BCM2835_FSEL_ALT1>;
			};
			i2c1_gpio2: i2c1-gpio2 {
				brcm,pins = <2 3>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			i2c1_gpio44: i2c1-gpio44 {
				brcm,pins = <44 45>;
				brcm,function = <BCM2835_FSEL_ALT2>;
			};

			jtag_gpio22: jtag-gpio22 {
				brcm,pins = <22 23 24 25 26 27>;
				brcm,function = <BCM2835_FSEL_ALT4>;
			};

			pcm_gpio18: pcm-gpio18 {
				brcm,pins = <18 19 20 21>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			pcm_gpio28: pcm-gpio28 {
				brcm,pins = <28 29 30 31>;
				brcm,function = <BCM2835_FSEL_ALT2>;
			};

			sdhost_gpio48: sdhost-gpio48 {
				brcm,pins = <48 49 50 51 52 53>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};

			spi0_gpio7: spi0-gpio7 {
				brcm,pins = <7 8 9 10 11>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			spi0_gpio35: spi0-gpio35 {
				brcm,pins = <35 36 37 38 39>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			spi1_gpio16: spi1-gpio16 {
				brcm,pins = <16 17 18 19 20 21>;
				brcm,function = <BCM2835_FSEL_ALT4>;
			};
			spi2_gpio40: spi2-gpio40 {
				brcm,pins = <40 41 42 43 44 45>;
				brcm,function = <BCM2835_FSEL_ALT4>;
			};

			uart0_gpio14: uart0-gpio14 {
				brcm,pins = <14 15>;
				brcm,function = <BCM2835_FSEL_ALT0>;
			};
			/* Separate from the uart0_gpio14 group
			 * because it conflicts with spi1_gpio16, and
			 * people often run uart0 on the two pins
			 * without flow control.
			 */
			uart0_ctsrts_gpio16: uart0-ctsrts-gpio16 {
				brcm,pins = <16 17>;
				brcm,function = <BCM2835_FSEL_ALT3>;
			};
			uart0_ctsrts_gpio30: uart0-ctsrts-gpio30 {
				brcm,pins = <30 31>;
				brcm,function = <BCM2835_FSEL_ALT3>;
				brcm,pull = <BCM2835_PUD_UP BCM2835_PUD_OFF>;
			};
			uart0_gpio32: uart0-gpio32 {
				brcm,pins = <32 33>;
				brcm,function = <BCM2835_FSEL_ALT3>;
				brcm,pull = <BCM2835_PUD_OFF BCM2835_PUD_UP>;
			};
			uart0_gpio36: uart0-gpio36 {
				brcm,pins = <36 37>;
				brcm,function = <BCM2835_FSEL_ALT2>;
			};
			uart0_ctsrts_gpio38: uart0-ctsrts-gpio38 {
				brcm,pins = <38 39>;
				brcm,function = <BCM2835_FSEL_ALT2>;
			};

			uart1_gpio14: uart1-gpio14 {
				brcm,pins = <14 15>;
				brcm,function = <BCM2835_FSEL_ALT5>;
			};
			uart1_ctsrts_gpio16: uart1-ctsrts-gpio16 {
				brcm,pins = <16 17>;
				brcm,function = <BCM2835_FSEL_ALT5>;
			};
			uart1_gpio32: uart1-gpio32 {
				brcm,pins = <32 33>;
				brcm,function = <BCM2835_FSEL_ALT5>;
			};
			uart1_ctsrts_gpio30: uart1-ctsrts-gpio30 {
				brcm,pins = <30 31>;
				brcm,function = <BCM2835_FSEL_ALT5>;
			};
			uart1_gpio40: uart1-gpio40 {
				brcm,pins = <40 41>;
				brcm,function = <BCM2835_FSEL_ALT5>;
			};
			uart1_ctsrts_gpio42: uart1-ctsrts-gpio42 {
				brcm,pins = <42 43>;
				brcm,function = <BCM2835_FSEL_ALT5>;
			};
		};

		uart0: serial@7e201000 {
			compatible = "arm,pl011", "arm,primecell";
			reg = <0x7e201000 0x200>;
			interrupts = <2 25>;
			clocks = <&clocks BCM2835_CLOCK_UART>,
				 <&clocks BCM2835_CLOCK_VPU>;
			clock-names = "uartclk", "apb_pclk";
			arm,primecell-periphid = <0x00241011>;
		};

		sdhost: mmc@7e202000 {
			compatible = "brcm,bcm2835-sdhost";
			reg = <0x7e202000 0x100>;
			interrupts = <2 24>;
			clocks = <&clocks BCM2835_CLOCK_VPU>;
			status = "disabled";
		};

		i2s: i2s@7e203000 {
			compatible = "brcm,bcm2835-i2s";
			reg = <0x7e203000 0x24>;
			clocks = <&clocks BCM2835_CLOCK_PCM>;
			status = "disabled";
		};

		spi: spi@7e204000 {
			compatible = "brcm,bcm2835-spi";
			reg = <0x7e204000 0x200>;
			interrupts = <2 22>;
			clocks = <&clocks BCM2835_CLOCK_VPU>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		i2c0: i2c@7e205000 {
			compatible = "brcm,bcm2835-i2c";
			reg = <0x7e205000 0x200>;
			interrupts = <2 21>;
			clocks = <&clocks BCM2835_CLOCK_VPU>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		dpi: dpi@7e208000 {
			compatible = "brcm,bcm2835-dpi";
			reg = <0x7e208000 0x8c>;
			clocks = <&clocks BCM2835_CLOCK_VPU>,
				 <&clocks BCM2835_CLOCK_DPI>;
			clock-names = "core", "pixel";
			status = "disabled";
		};

		dsi0: dsi@7e209000 {
			compatible = "brcm,bcm2835-dsi0";
			reg = <0x7e209000 0x78>;
			interrupts = <2 4>;
			#address-cells = <1>;
			#size-cells = <0>;
			#clock-cells = <1>;

			clocks = <&clocks BCM2835_PLLA_DSI0>,
				 <&clocks BCM2835_CLOCK_DSI0E>,
				 <&clocks BCM2835_CLOCK_DSI0P>;
			clock-names = "phy", "escape", "pixel";

			clock-output-names = "dsi0_byte",
					     "dsi0_ddr2",
					     "dsi0_ddr";

			status = "disabled";
		};

		aux: aux@7e215000 {
			compatible = "brcm,bcm2835-aux";
			#clock-cells = <1>;
			reg = <0x7e215000 0x8>;
			clocks = <&clocks BCM2835_CLOCK_VPU>;
		};

		uart1: serial@7e215040 {
			compatible = "brcm,bcm2835-aux-uart";
			reg = <0x7e215040 0x40>;
			interrupts = <1 29>;
			clocks = <&aux BCM2835_AUX_CLOCK_UART>;
			status = "disabled";
		};

		spi1: spi@7e215080 {
			compatible = "brcm,bcm2835-aux-spi";
			reg = <0x7e215080 0x40>;
			interrupts = <1 29>;
			clocks = <&aux BCM2835_AUX_CLOCK_SPI1>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		spi2: spi@7e2150c0 {
			compatible = "brcm,bcm2835-aux-spi";
			reg = <0x7e2150c0 0x40>;
			interrupts = <1 29>;
			clocks = <&aux BCM2835_AUX_CLOCK_SPI2>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		pwm: pwm@7e20c000 {
			compatible = "brcm,bcm2835-pwm";
			reg = <0x7e20c000 0x28>;
			clocks = <&clocks BCM2835_CLOCK_PWM>;
			assigned-clocks = <&clocks BCM2835_CLOCK_PWM>;
			assigned-clock-rates = <10000000>;
			#pwm-cells = <2>;
			status = "disabled";
		};

		sdhci: mmc@7e300000 {
			compatible = "brcm,bcm2835-sdhci";
			reg = <0x7e300000 0x100>;
			interrupts = <2 30>;
			clocks = <&clocks BCM2835_CLOCK_EMMC>;
			status = "disabled";
		};

		hvs@7e400000 {
			compatible = "brcm,bcm2835-hvs";
			reg = <0x7e400000 0x6000>;
			interrupts = <2 1>;
		};

		dsi1: dsi@7e700000 {
			compatible = "brcm,bcm2835-dsi1";
			reg = <0x7e700000 0x8c>;
			interrupts = <2 12>;
			#address-cells = <1>;
			#size-cells = <0>;
			#clock-cells = <1>;

			clocks = <&clocks BCM2835_PLLD_DSI1>,
				 <&clocks BCM2835_CLOCK_DSI1E>,
				 <&clocks BCM2835_CLOCK_DSI1P>;
			clock-names = "phy", "escape", "pixel";

			clock-output-names = "dsi1_byte",
					     "dsi1_ddr2",
					     "dsi1_ddr";

			status = "disabled";
		};

		i2c1: i2c@7e804000 {
			compatible = "brcm,bcm2835-i2c";
			reg = <0x7e804000 0x1000>;
			interrupts = <2 21>;
			clocks = <&clocks BCM2835_CLOCK_VPU>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		usb: usb@7e980000 {
			compatible = "brcm,bcm2835-usb";
			reg = <0x7e980000 0x10000>;
			interrupts = <1 9>;
			#address-cells = <1>;
			#size-cells = <0>;
			clocks = <&clk_usb>;
			clock-names = "otg";
			phys = <&usbphy>;
			phy-names = "usb2-phy";
		};
	};

	clocks {
		/* The oscillator is the root of the clock tree. */
		clk_osc: clk-osc {
			compatible = "fixed-clock";
			#clock-cells = <0>;
			clock-output-names = "osc";
			clock-frequency = <19200000>;
		};

		clk_usb: clk-usb {
			compatible = "fixed-clock";
			#clock-cells = <0>;
			clock-output-names = "otg";
			clock-frequency = <480000000>;
		};
	};

	usbphy: phy {
		compatible = "usb-nop-xceiv";
		#phy-cells = <0>;
	};
};