summaryrefslogtreecommitdiff
path: root/target/linux/brcm2708/patches-4.4/0142-BCM270X_DT-Adjust-overlay-README-formatting.patch
blob: 20b44254f4a74131b8d289c222fac4096452badf (plain)
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
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
From 8d559133434730d0a1c5f661e6cdaca27f6ee184 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 8 Feb 2016 09:46:33 +0000
Subject: [PATCH] BCM270X_DT: Adjust overlay README formatting

---
 arch/arm/boot/dts/overlays/README | 414 +++++++++++++++++++-------------------
 1 file changed, 207 insertions(+), 207 deletions(-)

--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -83,58 +83,58 @@ Name:   <The base DTB>
 Info:   Configures the base Raspberry Pi hardware
 Load:   <loaded automatically>
 Params:
-        audio                    Set to "on" to enable the onboard ALSA audio
-                                 interface (default "off")
+        audio                   Set to "on" to enable the onboard ALSA audio
+                                interface (default "off")
 
-        i2c_arm                  Set to "on" to enable the ARM's i2c interface
-                                 (default "off")
+        i2c_arm                 Set to "on" to enable the ARM's i2c interface
+                                (default "off")
 
-        i2c_vc                   Set to "on" to enable the i2c interface
-                                 usually reserved for the VideoCore processor
-                                 (default "off")
+        i2c_vc                  Set to "on" to enable the i2c interface
+                                usually reserved for the VideoCore processor
+                                (default "off")
 
-        i2c                      An alias for i2c_arm
+        i2c                     An alias for i2c_arm
 
-        i2c_arm_baudrate         Set the baudrate of the ARM's i2c interface
-                                 (default "100000")
+        i2c_arm_baudrate        Set the baudrate of the ARM's i2c interface
+                                (default "100000")
 
-        i2c_vc_baudrate          Set the baudrate of the VideoCore i2c interface
-                                 (default "100000")
+        i2c_vc_baudrate         Set the baudrate of the VideoCore i2c interface
+                                (default "100000")
 
-        i2c_baudrate             An alias for i2c_arm_baudrate
+        i2c_baudrate            An alias for i2c_arm_baudrate
 
-        i2s                      Set to "on" to enable the i2s interface
-                                 (default "off")
+        i2s                     Set to "on" to enable the i2s interface
+                                (default "off")
 
-        spi                      Set to "on" to enable the spi interfaces
-                                 (default "off")
+        spi                     Set to "on" to enable the spi interfaces
+                                (default "off")
 
-        random                   Set to "on" to enable the hardware random
-                                 number generator (default "on")
+        random                  Set to "on" to enable the hardware random
+                                number generator (default "on")
 
-        uart0                    Set to "off" to disable uart0 (default "on")
+        uart0                   Set to "off" to disable uart0 (default "on")
 
-        watchdog                 Set to "on" to enable the hardware watchdog
-                                 (default "off")
+        watchdog                Set to "on" to enable the hardware watchdog
+                                (default "off")
 
-        act_led_trigger          Choose which activity the LED tracks.
-                                 Use "heartbeat" for a nice load indicator.
-                                 (default "mmc")
+        act_led_trigger         Choose which activity the LED tracks.
+                                Use "heartbeat" for a nice load indicator.
+                                (default "mmc")
 
-        act_led_activelow        Set to "on" to invert the sense of the LED
-                                 (default "off")
+        act_led_activelow       Set to "on" to invert the sense of the LED
+                                (default "off")
 
-        act_led_gpio             Set which GPIO to use for the activity LED
-                                 (in case you want to connect it to an external
-                                 device)
-                                 (default "16" on a non-Plus board, "47" on a
-                                 Plus or Pi 2)
+        act_led_gpio            Set which GPIO to use for the activity LED
+                                (in case you want to connect it to an external
+                                device)
+                                (default "16" on a non-Plus board, "47" on a
+                                Plus or Pi 2)
 
         pwr_led_trigger
         pwr_led_activelow
         pwr_led_gpio
-                                 As for act_led_*, but using the PWR LED.
-                                 Not available on Model A/B boards.
+                                As for act_led_*, but using the PWR LED.
+                                Not available on Model A/B boards.
 
         N.B. It is recommended to only enable those interfaces that are needed.
         Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc
@@ -149,19 +149,19 @@ Params:
 Name:   ads7846
 Info:   ADS7846 Touch controller
 Load:   dtoverlay=ads7846,<param>=<val>
-Params: cs                       SPI bus Chip Select (default 1)
-        speed                    SPI bus speed (default 2MHz, max 3.25MHz)
-        penirq                   GPIO used for PENIRQ. REQUIRED
-        penirq_pull              Set GPIO pull (default 0=none, 2=pullup)
-        swapxy                   Swap x and y axis
-        xmin                     Minimum value on the X axis (default 0)
-        ymin                     Minimum value on the Y axis (default 0)
-        xmax                     Maximum value on the X axis (default 4095)
-        ymax                     Maximum value on the Y axis (default 4095)
-        pmin                     Minimum reported pressure value (default 0)
-        pmax                     Maximum reported pressure value (default 65535)
-        xohms                    Touchpanel sensitivity (X-plate resistance)
-                                 (default 400)
+Params: cs                      SPI bus Chip Select (default 1)
+        speed                   SPI bus speed (default 2MHz, max 3.25MHz)
+        penirq                  GPIO used for PENIRQ. REQUIRED
+        penirq_pull             Set GPIO pull (default 0=none, 2=pullup)
+        swapxy                  Swap x and y axis
+        xmin                    Minimum value on the X axis (default 0)
+        ymin                    Minimum value on the Y axis (default 0)
+        xmax                    Maximum value on the X axis (default 4095)
+        ymax                    Maximum value on the Y axis (default 4095)
+        pmin                    Minimum reported pressure value (default 0)
+        pmax                    Maximum reported pressure value (default 65535)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+                                (default 400)
 
         penirq is required and usually xohms (60-100) has to be set as well.
         Apart from that, pmax (255) and swapxy are also common.
@@ -175,12 +175,12 @@ Name:   at86rf233
 Info:   Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
         connected to spi0.0
 Load:   dtoverlay=at86rf233,<param>=<val>
-Params: interrupt                GPIO used for INT (default 23)
-        reset                    GPIO used for Reset (default 24)
-        sleep                    GPIO used for Sleep (default 25)
-        speed                    SPI bus speed in Hz (default 6000000)
-        trim                     Fine tuning of the internal capacitance
-                                 arrays (0=+0pF, 15=+4.5pF, default 15)
+Params: interrupt               GPIO used for INT (default 23)
+        reset                   GPIO used for Reset (default 24)
+        sleep                   GPIO used for Sleep (default 25)
+        speed                   SPI bus speed in Hz (default 6000000)
+        trim                    Fine tuning of the internal capacitance
+                                arrays (0=+0pF, 15=+4.5pF, default 15)
 
 
 Name:   bmp085_i2c-sensor
@@ -194,8 +194,8 @@ Name:   dht11
 Info:   Overlay for the DHT11/DHT21/DHT22 humidity/temperature sensors
         Also sometimes found with the part number(s) AM230x.
 Load:   dtoverlay=dht11,<param>=<val>
-Params: gpiopin                  GPIO connected to the sensor's DATA output.
-                                 (default 4)
+Params: gpiopin                 GPIO connected to the sensor's DATA output.
+                                (default 4)
 
 
 Name:   dwc-otg
@@ -208,15 +208,15 @@ Params: <None>
 Name:   dwc2
 Info:   Selects the dwc2 USB controller driver
 Load:   dtoverlay=dwc2,<param>=<val>
-Params: dr_mode                  Dual role mode: "host", "peripheral" or "otg"
+Params: dr_mode                 Dual role mode: "host", "peripheral" or "otg"
 
-        g-rx-fifo-size           Size of rx fifo size in gadget mode
+        g-rx-fifo-size          Size of rx fifo size in gadget mode
 
-        g-np-tx-fifo-size        Size of non-periodic tx fifo size in gadget
-                                 mode
+        g-np-tx-fifo-size       Size of non-periodic tx fifo size in gadget
+                                mode
 
-        g-tx-fifo-size           Size of periodic tx fifo per endpoint
-                                 (except ep0) in gadget mode
+        g-tx-fifo-size          Size of periodic tx fifo per endpoint
+                                (except ep0) in gadget mode
 
 
 [ The ds1307-rtc overlay has been deleted. See i2c-rtc. ]
@@ -225,9 +225,9 @@ Params: dr_mode                  Dual ro
 Name:   enc28j60
 Info:   Overlay for the Microchip ENC28J60 Ethernet Controller (SPI)
 Load:   dtoverlay=enc28j60,<param>=<val>
-Params: int_pin                  GPIO used for INT (default 25)
+Params: int_pin                 GPIO used for INT (default 25)
 
-        speed                    SPI bus speed (default 12000000)
+        speed                   SPI bus speed (default 12000000)
 
 
 Name:   gpio-ir
@@ -237,26 +237,26 @@ Info:   Use GPIO pin as rc-core style in
         not required! The key mapping and other decoding parameters can be
         configured by "ir-keytable" tool.
 Load:   dtoverlay=gpio-ir,<param>=<val>
-Params: gpio_pin                 Input pin number. Default is 18.
+Params: gpio_pin                Input pin number. Default is 18.
 
-        gpio_pull                Desired pull-up/down state (off, down, up)
-                                 Default is "down".
+        gpio_pull               Desired pull-up/down state (off, down, up)
+                                Default is "down".
 
-        rc-map-name              Default rc keymap (can also be changed by
-                                 ir-keytable), defaults to "rc-rc6-mce"
+        rc-map-name             Default rc keymap (can also be changed by
+                                ir-keytable), defaults to "rc-rc6-mce"
 
 
 Name:   gpio-poweroff
 Info:   Drives a GPIO high or low on reboot
 Load:   dtoverlay=gpio-poweroff,<param>=<val>
-Params: gpiopin                  GPIO for signalling (default 26)
+Params: gpiopin                 GPIO for signalling (default 26)
 
-        active_low               Set if the power control device requires a
-                                 high->low transition to trigger a power-down.
-                                 Note that this will require the support of a
-                                 custom dt-blob.bin to prevent a power-down
-                                 during the boot process, and that a reboot
-                                 will also cause the pin to go low.
+        active_low              Set if the power control device requires a
+                                high->low transition to trigger a power-down.
+                                Note that this will require the support of a
+                                custom dt-blob.bin to prevent a power-down
+                                during the boot process, and that a reboot
+                                will also cause the pin to go low.
 
 
 Name:   hifiberry-amp
@@ -300,65 +300,65 @@ Name:   hy28a
 Info:   HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
         Default values match Texy's display shield
 Load:   dtoverlay=hy28a,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        xohms                    Touchpanel sensitivity (X-plate resistance)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
 
-        resetgpio                GPIO used to reset controller
+        resetgpio               GPIO used to reset controller
 
-        ledgpio                  GPIO used to control backlight
+        ledgpio                 GPIO used to control backlight
 
 
 Name:   hy28b
 Info:   HY28B - 2.8" TFT LCD Display Module by HAOYU Electronics
         Default values match Texy's display shield
 Load:   dtoverlay=hy28b,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        xohms                    Touchpanel sensitivity (X-plate resistance)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
 
-        resetgpio                GPIO used to reset controller
+        resetgpio               GPIO used to reset controller
 
-        ledgpio                  GPIO used to control backlight
+        ledgpio                 GPIO used to control backlight
 
 
 Name:   i2c-gpio
 Info:   Adds support for software i2c controller on gpio pins
 Load:   dtoverlay=i2c-gpio,<param>=<val>
-Params: i2c_gpio_sda             GPIO used for I2C data (default "23")
+Params: i2c_gpio_sda            GPIO used for I2C data (default "23")
 
-        i2c_gpio_scl             GPIO used for I2C clock (default "24")
+        i2c_gpio_scl            GPIO used for I2C clock (default "24")
 
-        i2c_gpio_delay_us        Clock delay in microseconds
-                                 (default "2" = ~100kHz)
+        i2c_gpio_delay_us       Clock delay in microseconds
+                                (default "2" = ~100kHz)
 
 
 Name:   i2c-rtc
 Info:   Adds support for a number of I2C Real Time Clock devices
 Load:   dtoverlay=i2c-rtc,<param>=<val>
-Params: ds1307                   Select the DS1307 device
+Params: ds1307                  Select the DS1307 device
 
-        ds3231                   Select the DS3231 device
+        ds3231                  Select the DS3231 device
 
-        mcp7941x                 Select the MCP7941x device
+        mcp7941x                Select the MCP7941x device
 
-        pcf2127                  Select the PCF2127 device
+        pcf2127                 Select the PCF2127 device
 
-        pcf8523                  Select the PCF8523 device
+        pcf8523                 Select the PCF8523 device
 
-        pcf8563                  Select the PCF8563 device
+        pcf8563                 Select the PCF8563 device
 
 
 Name:   i2s-mmap
@@ -396,70 +396,70 @@ Name:   lirc-rpi
 Info:   Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
         Consult the module documentation for more details.
 Load:   dtoverlay=lirc-rpi,<param>=<val>
-Params: gpio_out_pin             GPIO for output (default "17")
+Params: gpio_out_pin            GPIO for output (default "17")
 
-        gpio_in_pin              GPIO for input (default "18")
+        gpio_in_pin             GPIO for input (default "18")
 
-        gpio_in_pull             Pull up/down/off on the input pin
-                                 (default "down")
+        gpio_in_pull            Pull up/down/off on the input pin
+                                (default "down")
 
-        sense                    Override the IR receive auto-detection logic:
-                                   "0" = force active-high
-                                   "1" = force active-low
-                                   "-1" = use auto-detection
-                                 (default "-1")
+        sense                   Override the IR receive auto-detection logic:
+                                 "0" = force active-high
+                                 "1" = force active-low
+                                 "-1" = use auto-detection
+                                (default "-1")
 
-        softcarrier              Turn the software carrier "on" or "off"
-                                 (default "on")
+        softcarrier             Turn the software carrier "on" or "off"
+                                (default "on")
 
-        invert                   "on" = invert the output pin (default "off")
+        invert                  "on" = invert the output pin (default "off")
 
-        debug                    "on" = enable additional debug messages
-                                 (default "off")
+        debug                   "on" = enable additional debug messages
+                                (default "off")
 
 
 Name:   mcp2515-can0
 Info:   Configures the MCP2515 CAN controller on spi0.0
 Load:   dtoverlay=mcp2515-can0,<param>=<val>
-Params: oscillator               Clock frequency for the CAN controller (Hz)
+Params: oscillator              Clock frequency for the CAN controller (Hz)
 
-        spimaxfrequency          Maximum SPI frequence (Hz)
+        spimaxfrequency         Maximum SPI frequence (Hz)
 
-        interrupt                GPIO for interrupt signal
+        interrupt               GPIO for interrupt signal
 
 
 Name:   mcp2515-can1
 Info:   Configures the MCP2515 CAN controller on spi0.1
 Load:   dtoverlay=mcp2515-can1,<param>=<val>
-Params: oscillator               Clock frequency for the CAN controller (Hz)
+Params: oscillator              Clock frequency for the CAN controller (Hz)
 
-        spimaxfrequency          Maximum SPI frequence (Hz)
+        spimaxfrequency         Maximum SPI frequence (Hz)
 
-        interrupt                GPIO for interrupt signal
+        interrupt               GPIO for interrupt signal
 
 
 Name:   mmc
 Info:   Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
 Load:   dtoverlay=mmc,<param>=<val>
-Params: overclock_50             Clock (in MHz) to use when the MMC framework
-                                 requests 50MHz
-        force_pio                Disable DMA support
+Params: overclock_50            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
+        force_pio               Disable DMA support
 
 
 Name:   mz61581
 Info:   MZ61581 display by Tontec
 Load:   dtoverlay=mz61581,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        txbuflen                 Transmit buffer length (default 32768)
+        txbuflen                Transmit buffer length (default 32768)
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        xohms                    Touchpanel sensitivity (X-plate resistance)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
 
 
 [ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ]
@@ -474,69 +474,69 @@ Params: speed                    Display
 Name:   piscreen
 Info:   PiScreen display by OzzMaker.com
 Load:   dtoverlay=piscreen,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        xohms                    Touchpanel sensitivity (X-plate resistance)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
 
 
 Name:   piscreen2r
 Info:   PiScreen 2 with resistive TP display by OzzMaker.com
 Load:   dtoverlay=piscreen2r,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        xohms                    Touchpanel sensitivity (X-plate resistance)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
 
 
 Name:   pitft28-capacitive
 Info:   Adafruit PiTFT 2.8" capacitive touch screen
 Load:   dtoverlay=pitft28-capacitive,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        touch-sizex              Touchscreen size x (default 240)
+        touch-sizex             Touchscreen size x (default 240)
 
-        touch-sizey              Touchscreen size y (default 320)
+        touch-sizey             Touchscreen size y (default 320)
 
-        touch-invx               Touchscreen inverted x axis
+        touch-invx              Touchscreen inverted x axis
 
-        touch-invy               Touchscreen inverted y axis
+        touch-invy              Touchscreen inverted y axis
 
-        touch-swapxy             Touchscreen swapped x y axis
+        touch-swapxy            Touchscreen swapped x y axis
 
 
 Name:   pitft28-resistive
 Info:   Adafruit PiTFT 2.8" resistive touch screen
 Load:   dtoverlay=pitft28-resistive,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
 
 Name:   pps-gpio
 Info:   Configures the pps-gpio (pulse-per-second time signal via GPIO).
 Load:   dtoverlay=pps-gpio,<param>=<val>
-Params: gpiopin                  Input GPIO (default "18")
+Params: gpiopin                 Input GPIO (default "18")
 
 
 Name:   pwm
@@ -553,9 +553,9 @@ Info:   Configures a single PWM channel
           4) Currently the clock must have been enabled and configured
              by other means.
 Load:   dtoverlay=pwm,<param>=<val>
-Params: pin                      Output pin (default 18) - see table
-        func                     Pin function (default 2 = Alt5) - see above
-        clock                    PWM clock frequency (informational)
+Params: pin                     Output pin (default 18) - see table
+        func                    Pin function (default 2 = Alt5) - see above
+        clock                   PWM clock frequency (informational)
 
 
 Name:   pwm-2chan
@@ -572,11 +572,11 @@ Info:   Configures both PWM channels
           4) Currently the clock must have been enabled and configured
              by other means.
 Load:   dtoverlay=pwm-2chan,<param>=<val>
-Params: pin                      Output pin (default 18) - see table
-        pin2                     Output pin for other channel (default 19)
-        func                     Pin function (default 2 = Alt5) - see above
-        func2                    Function for pin2 (default 2 = Alt5)
-        clock                    PWM clock frequency (informational)
+Params: pin                     Output pin (default 18) - see table
+        pin2                    Output pin for other channel (default 19)
+        func                    Pin function (default 2 = Alt5) - see above
+        func2                   Function for pin2 (default 2 = Alt5)
+        clock                   PWM clock frequency (informational)
 
 
 Name:   raspidac3
@@ -600,15 +600,15 @@ Params: <None>
 Name:   rpi-display
 Info:   RPi-Display - 2.8" Touch Display by Watterott
 Load:   dtoverlay=rpi-display,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        xohms                    Touchpanel sensitivity (X-plate resistance)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
 
 
 Name:   rpi-ft5406
@@ -632,52 +632,52 @@ Params: <None>
 Name:   sdhost
 Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock
 Load:   dtoverlay=sdhost,<param>=<val>
-Params: overclock_50             Clock (in MHz) to use when the MMC framework
-                                 requests 50MHz
+Params: overclock_50            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
 
-        force_pio                Disable DMA support (default off)
+        force_pio               Disable DMA support (default off)
 
-        pio_limit                Number of blocks above which to use DMA
-                                 (default 1)
+        pio_limit               Number of blocks above which to use DMA
+                                (default 1)
 
-        debug                    Enable debug output (default off)
+        debug                   Enable debug output (default off)
 
 
 Name:   sdio
 Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock,
         and enables SDIO via GPIOs 22-27.
 Load:   dtoverlay=sdio,<param>=<val>
-Params: overclock_50             SD Clock (in MHz) to use when the MMC framework
-                                 requests 50MHz
+Params: overclock_50            SD Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
 
-        sdio_overclock           SDIO Clock (in MHz) to use when the MMC
-                                 framework requests 50MHz
+        sdio_overclock          SDIO Clock (in MHz) to use when the MMC
+                                framework requests 50MHz
 
-        force_pio                Disable DMA support (default off)
+        force_pio               Disable DMA support (default off)
 
-        pio_limit                Number of blocks above which to use DMA
-                                 (default 1)
+        pio_limit               Number of blocks above which to use DMA
+                                (default 1)
 
-        debug                    Enable debug output (default off)
+        debug                   Enable debug output (default off)
 
-        poll_once                Disable SDIO-device polling every second
-                                 (default on: polling once at boot-time)
+        poll_once               Disable SDIO-device polling every second
+                                (default on: polling once at boot-time)
 
-        bus_width                Set the SDIO host bus width (default 4 bits)
+        bus_width               Set the SDIO host bus width (default 4 bits)
 
 
 Name:   sdtweak
 Info:   Tunes the bcm2835-sdhost SD/MMC driver
 Load:   dtoverlay=sdtweak,<param>=<val>
-Params: overclock_50             Clock (in MHz) to use when the MMC framework
-                                 requests 50MHz
+Params: overclock_50            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
 
-        force_pio                Disable DMA support (default off)
+        force_pio               Disable DMA support (default off)
 
-        pio_limit                Number of blocks above which to use DMA
-                                 (default 1)
+        pio_limit               Number of blocks above which to use DMA
+                                (default 1)
 
-        debug                    Enable debug output (default off)
+        debug                   Enable debug output (default off)
 
 
 Name:   smi
@@ -708,25 +708,25 @@ Name:   tinylcd35
 Info:   3.5" Color TFT Display by www.tinylcd.com
         Options: Touch, RTC, keypad
 Load:   dtoverlay=tinylcd35,<param>=<val>
-Params: speed                    Display SPI bus speed
+Params: speed                   Display SPI bus speed
 
-        rotate                   Display rotation {0,90,180,270}
+        rotate                  Display rotation {0,90,180,270}
 
-        fps                      Delay between frame updates
+        fps                     Delay between frame updates
 
-        debug                    Debug output level {0-7}
+        debug                   Debug output level {0-7}
 
-        touch                    Enable touch panel
+        touch                   Enable touch panel
 
-        touchgpio                Touch controller IRQ GPIO
+        touchgpio               Touch controller IRQ GPIO
 
-        xohms                    Touchpanel: Resistance of X-plate in ohms
+        xohms                   Touchpanel: Resistance of X-plate in ohms
 
-        rtc-pcf                  PCF8563 Real Time Clock
+        rtc-pcf                 PCF8563 Real Time Clock
 
-        rtc-ds                   DS1307 Real Time Clock
+        rtc-ds                  DS1307 Real Time Clock
 
-        keypad                   Enable keypad
+        keypad                  Enable keypad
 
         Examples:
             Display with touchpanel, PCF8563 RTC and keypad:
@@ -738,9 +738,9 @@ Params: speed                    Display
 Name:   uart1
 Info:   Enable uart1 in place of uart0
 Load:   dtoverlay=uart1,<param>=<val>
-Params: txd1_pin                 GPIO pin for TXD1 (14, 32 or 40 - default 14)
+Params: txd1_pin                GPIO pin for TXD1 (14, 32 or 40 - default 14)
 
-        rxd1_pin                 GPIO pin for RXD1 (15, 33 or 41 - default 15)
+        rxd1_pin                GPIO pin for RXD1 (15, 33 or 41 - default 15)
 
 
 Name:   vc4-kms-v3d
@@ -763,22 +763,22 @@ Name:   w1-gpio
 Info:   Configures the w1-gpio Onewire interface module.
         Use this overlay if you *don't* need a GPIO to drive an external pullup.
 Load:   dtoverlay=w1-gpio,<param>=<val>
-Params: gpiopin                  GPIO for I/O (default "4")
+Params: gpiopin                 GPIO for I/O (default "4")
 
-        pullup                   Non-zero, "on", or "y" to enable the parasitic
-                                 power (2-wire, power-on-data) feature
+        pullup                  Non-zero, "on", or "y" to enable the parasitic
+                                power (2-wire, power-on-data) feature
 
 
 Name:   w1-gpio-pullup
 Info:   Configures the w1-gpio Onewire interface module.
         Use this overlay if you *do* need a GPIO to drive an external pullup.
 Load:   dtoverlay=w1-gpio-pullup,<param>=<val>
-Params: gpiopin                  GPIO for I/O (default "4")
+Params: gpiopin                 GPIO for I/O (default "4")
 
-        pullup                   Non-zero, "on", or "y" to enable the parasitic
-                                 power (2-wire, power-on-data) feature
+        pullup                  Non-zero, "on", or "y" to enable the parasitic
+                                power (2-wire, power-on-data) feature
 
-        extpullup                GPIO for external pullup (default "5")
+        extpullup               GPIO for external pullup (default "5")
 
 
 Troubleshooting