xref: /openbmc/u-boot/drivers/i2c/Kconfig (revision f6b83455) 
1#
2# I2C subsystem configuration
3#
4
5menu "I2C support"
6
7config DM_I2C
8	bool "Enable Driver Model for I2C drivers"
9	depends on DM
10	help
11	  Enable driver model for I2C. The I2C uclass interface: probe, read,
12	  write and speed, is implemented with the bus drivers operations,
13	  which provide methods for bus setting and data transfer. Each chip
14	  device (bus child) info is kept as parent platdata. The interface
15	  is defined in include/i2c.h. When i2c bus driver supports the i2c
16	  uclass, but the device drivers not, then DM_I2C_COMPAT config can
17	  be used as compatibility layer.
18
19config DM_I2C_COMPAT
20	bool "Enable I2C compatibility layer"
21	depends on DM
22	help
23	  Enable old-style I2C functions for compatibility with existing code.
24	  This option can be enabled as a temporary measure to avoid needing
25	  to convert all code for a board in a single commit. It should not
26	  be enabled for any board in an official release.
27
28config I2C_CROS_EC_TUNNEL
29	tristate "Chrome OS EC tunnel I2C bus"
30	depends on CROS_EC
31	help
32	  This provides an I2C bus that will tunnel i2c commands through to
33	  the other side of the Chrome OS EC to the I2C bus connected there.
34	  This will work whatever the interface used to talk to the EC (SPI,
35	  I2C or LPC). Some Chromebooks use this when the hardware design
36	  does not allow direct access to the main PMIC from the AP.
37
38config I2C_CROS_EC_LDO
39	bool "Provide access to LDOs on the Chrome OS EC"
40	depends on CROS_EC
41	---help---
42	On many Chromebooks the main PMIC is inaccessible to the AP. This is
43	often dealt with by using an I2C pass-through interface provided by
44	the EC. On some unfortunate models (e.g. Spring) the pass-through
45	is not available, and an LDO message is available instead. This
46	option enables a driver which provides very basic access to those
47	regulators, via the EC. We implement this as an I2C bus	which
48	emulates just the TPS65090 messages we know about. This is done to
49	avoid duplicating the logic in the TPS65090 regulator driver for
50	enabling/disabling an LDO.
51
52config I2C_SET_DEFAULT_BUS_NUM
53	bool "Set default I2C bus number"
54	depends on DM_I2C
55	help
56	  Set default number of I2C bus to be accessed. This option provides
57	  behaviour similar to old (i.e. pre DM) I2C bus driver.
58
59config I2C_DEFAULT_BUS_NUMBER
60	hex "I2C default bus number"
61	depends on I2C_SET_DEFAULT_BUS_NUM
62	default 0x0
63	help
64	  Number of default I2C bus to use
65
66config DM_I2C_GPIO
67	bool "Enable Driver Model for software emulated I2C bus driver"
68	depends on DM_I2C && DM_GPIO
69	help
70	  Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO
71	  configuration is given by the device tree. Kernel-style device tree
72	  bindings are supported.
73	  Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt
74
75config SYS_I2C_AT91
76	bool "Atmel I2C driver"
77	depends on DM_I2C && ARCH_AT91
78	help
79	  Add support for the Atmel I2C driver. A serious problem is that there
80	  is no documented way to issue repeated START conditions for more than
81	  two messages, as needed to support combined I2C messages. Use the
82	  i2c-gpio driver unless your system can cope with this limitation.
83	  Binding info: doc/device-tree-bindings/i2c/i2c-at91.txt
84
85config SYS_I2C_FSL
86       bool "Freescale I2C bus driver"
87       depends on DM_I2C
88       help
89	  Add support for Freescale I2C busses as used on MPC8240, MPC8245, and
90	  MPC85xx processors.
91
92config SYS_I2C_CADENCE
93	tristate "Cadence I2C Controller"
94	depends on DM_I2C && (ARCH_ZYNQ || ARM64)
95	help
96	  Say yes here to select Cadence I2C Host Controller. This controller is
97	  e.g. used by Xilinx Zynq.
98
99config SYS_I2C_DW
100	bool "Designware I2C Controller"
101	default n
102	help
103	  Say yes here to select the Designware I2C Host Controller. This
104	  controller is used in various SoCs, e.g. the ST SPEAr, Altera
105	  SoCFPGA, Synopsys ARC700 and some Intel x86 SoCs.
106
107config SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED
108	bool "DW I2C Enable Status Register not supported"
109	depends on SYS_I2C_DW && (TARGET_SPEAR300 || TARGET_SPEAR310 || \
110		TARGET_SPEAR320 || TARGET_SPEAR600 || TARGET_X600)
111	default y
112	help
113	  Some versions of the Designware I2C controller do not support the
114	  enable status register. This config option can be enabled in such
115	  cases.
116
117config SYS_I2C_ASPEED
118	bool "Aspeed I2C Controller"
119	depends on DM_I2C && ARCH_ASPEED
120	help
121	  Say yes here to select Aspeed I2C Host Controller. The driver
122	  supports AST2500 and AST2400 controllers, but is very limited.
123	  Only single master mode is supported and only byte-by-byte
124	  synchronous reads and writes are supported, no Pool Buffers or DMA.
125
126config SYS_I2C_INTEL
127	bool "Intel I2C/SMBUS driver"
128	depends on DM_I2C
129	help
130	  Add support for the Intel SMBUS driver. So far this driver is just
131	  a stub which perhaps some basic init. There is no implementation of
132	  the I2C API meaning that any I2C operations will immediately fail
133	  for now.
134
135config SYS_I2C_IMX_LPI2C
136	bool "NXP i.MX LPI2C driver"
137	help
138	  Add support for the NXP i.MX LPI2C driver.
139
140config SYS_I2C_MESON
141	bool "Amlogic Meson I2C driver"
142	depends on DM_I2C && ARCH_MESON
143	help
144	  Add support for the I2C controller available in Amlogic Meson
145	  SoCs. The controller supports programmable bus speed including
146	  standard (100kbits/s) and fast (400kbit/s) speed and allows the
147	  software to define a flexible format of the bit streams. It has an
148	  internal buffer holding up to 8 bytes for transfers and supports
149	  both 7-bit and 10-bit addresses.
150
151config SYS_I2C_MXC
152	bool "NXP MXC I2C driver"
153	help
154	  Add support for the NXP I2C driver. This supports upto for bus
155	  channels and operating on standard mode upto 100 kbits/s and fast
156	  mode upto 400 kbits/s.
157
158if SYS_I2C_MXC
159config SYS_I2C_MXC_I2C1
160	bool "NXP MXC I2C1"
161	help
162	 Add support for NXP MXC I2C Controller 1.
163	 Required for SoCs which have I2C MXC controller 1 eg LS1088A, LS2080A
164
165config SYS_I2C_MXC_I2C2
166	bool "NXP MXC I2C2"
167	help
168	 Add support for NXP MXC I2C Controller 2.
169	 Required for SoCs which have I2C MXC controller 2 eg LS1088A, LS2080A
170
171config SYS_I2C_MXC_I2C3
172	bool "NXP MXC I2C3"
173	help
174	 Add support for NXP MXC I2C Controller 3.
175	 Required for SoCs which have I2C MXC controller 3 eg LS1088A, LS2080A
176
177config SYS_I2C_MXC_I2C4
178	bool "NXP MXC I2C4"
179	help
180	 Add support for NXP MXC I2C Controller 4.
181	 Required for SoCs which have I2C MXC controller 4 eg LS1088A, LS2080A
182
183config SYS_I2C_MXC_I2C5
184	bool "NXP MXC I2C5"
185	help
186	 Add support for NXP MXC I2C Controller 5.
187	 Required for SoCs which have I2C MXC controller 5 eg LX2160A
188
189config SYS_I2C_MXC_I2C6
190	bool "NXP MXC I2C6"
191	help
192	 Add support for NXP MXC I2C Controller 6.
193	 Required for SoCs which have I2C MXC controller 6 eg LX2160A
194
195config SYS_I2C_MXC_I2C7
196	bool "NXP MXC I2C7"
197	help
198	 Add support for NXP MXC I2C Controller 7.
199	 Required for SoCs which have I2C MXC controller 7 eg LX2160A
200
201config SYS_I2C_MXC_I2C8
202	bool "NXP MXC I2C8"
203	help
204	 Add support for NXP MXC I2C Controller 8.
205	 Required for SoCs which have I2C MXC controller 8 eg LX2160A
206endif
207
208if SYS_I2C_MXC_I2C1
209config SYS_MXC_I2C1_SPEED
210	int "I2C Channel 1 speed"
211	default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
212	default 100000
213	help
214	 MXC I2C Channel 1 speed
215
216config SYS_MXC_I2C1_SLAVE
217	int "I2C1 Slave"
218	default 0
219	help
220	 MXC I2C1 Slave
221endif
222
223if SYS_I2C_MXC_I2C2
224config SYS_MXC_I2C2_SPEED
225	int "I2C Channel 2 speed"
226	default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
227	default 100000
228	help
229	 MXC I2C Channel 2 speed
230
231config SYS_MXC_I2C2_SLAVE
232	int "I2C2 Slave"
233	default 0
234	help
235	 MXC I2C2 Slave
236endif
237
238if SYS_I2C_MXC_I2C3
239config SYS_MXC_I2C3_SPEED
240	int "I2C Channel 3 speed"
241	default 100000
242	help
243	 MXC I2C Channel 3 speed
244
245config SYS_MXC_I2C3_SLAVE
246	int "I2C3 Slave"
247	default 0
248	help
249	 MXC I2C3 Slave
250endif
251
252if SYS_I2C_MXC_I2C4
253config SYS_MXC_I2C4_SPEED
254	int "I2C Channel 4 speed"
255	default 100000
256	help
257	 MXC I2C Channel 4 speed
258
259config SYS_MXC_I2C4_SLAVE
260	int "I2C4 Slave"
261	default 0
262	help
263	 MXC I2C4 Slave
264endif
265
266if SYS_I2C_MXC_I2C5
267config SYS_MXC_I2C5_SPEED
268	int "I2C Channel 5 speed"
269	default 100000
270	help
271	 MXC I2C Channel 5 speed
272
273config SYS_MXC_I2C5_SLAVE
274	int "I2C5 Slave"
275	default 0
276	help
277	 MXC I2C5 Slave
278endif
279
280if SYS_I2C_MXC_I2C6
281config SYS_MXC_I2C6_SPEED
282	int "I2C Channel 6 speed"
283	default 100000
284	help
285	 MXC I2C Channel 6 speed
286
287config SYS_MXC_I2C6_SLAVE
288	int "I2C6 Slave"
289	default 0
290	help
291	 MXC I2C6 Slave
292endif
293
294if SYS_I2C_MXC_I2C7
295config SYS_MXC_I2C7_SPEED
296	int "I2C Channel 7 speed"
297	default 100000
298	help
299	 MXC I2C Channel 7 speed
300
301config SYS_MXC_I2C7_SLAVE
302	int "I2C7 Slave"
303	default 0
304	help
305	 MXC I2C7 Slave
306endif
307
308if SYS_I2C_MXC_I2C8
309config SYS_MXC_I2C8_SPEED
310	int "I2C Channel 8 speed"
311	default 100000
312	help
313	 MXC I2C Channel 8 speed
314
315config SYS_MXC_I2C8_SLAVE
316	int "I2C8 Slave"
317	default 0
318	help
319	 MXC I2C8 Slave
320endif
321
322config SYS_I2C_OMAP24XX
323	bool "TI OMAP2+ I2C driver"
324	depends on ARCH_OMAP2PLUS
325	help
326	  Add support for the OMAP2+ I2C driver.
327
328if SYS_I2C_OMAP24XX
329config SYS_OMAP24_I2C_SLAVE
330	int "I2C Slave addr channel 0"
331	default 1
332	help
333	  OMAP24xx I2C Slave address channel 0
334
335config SYS_OMAP24_I2C_SPEED
336	int "I2C Slave channel 0 speed"
337	default 100000
338	help
339	  OMAP24xx Slave speed channel 0
340endif
341
342config SYS_I2C_RCAR_I2C
343	bool "Renesas RCar I2C driver"
344	depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
345	help
346	  Support for Renesas RCar I2C controller.
347
348config SYS_I2C_RCAR_IIC
349	bool "Renesas RCar Gen3 IIC driver"
350	depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
351	help
352	  Support for Renesas RCar Gen3 IIC controller.
353
354config SYS_I2C_ROCKCHIP
355	bool "Rockchip I2C driver"
356	depends on DM_I2C
357	help
358	  Add support for the Rockchip I2C driver. This is used with various
359	  Rockchip parts such as RK3126, RK3128, RK3036 and RK3288. All chips
360	  have several I2C ports and all are provided, controled by the
361	  device tree.
362
363config SYS_I2C_SANDBOX
364	bool "Sandbox I2C driver"
365	depends on SANDBOX && DM_I2C
366	help
367	  Enable I2C support for sandbox. This is an emulation of a real I2C
368	  bus. Devices can be attached to the bus using the device tree
369	  which specifies the driver to use.  See sandbox.dts as an example.
370
371config SYS_I2C_S3C24X0
372	bool "Samsung I2C driver"
373	depends on ARCH_EXYNOS4 && DM_I2C
374	help
375	  Support for Samsung I2C controller as Samsung SoCs.
376
377config SYS_I2C_STM32F7
378	bool "STMicroelectronics STM32F7 I2C support"
379	depends on (STM32F7 || STM32H7 || ARCH_STM32MP) && DM_I2C
380	help
381	  Enable this option to add support for STM32 I2C controller
382	  introduced with STM32F7/H7 SoCs. This I2C controller supports :
383	   _ Slave and master modes
384	   _ Multimaster capability
385	   _ Standard-mode (up to 100 kHz)
386	   _ Fast-mode (up to 400 kHz)
387	   _ Fast-mode Plus (up to 1 MHz)
388	   _ 7-bit and 10-bit addressing mode
389	   _ Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask)
390	   _ All 7-bit addresses acknowledge mode
391	   _ General call
392	   _ Programmable setup and hold times
393	   _ Easy to use event management
394	   _ Optional clock stretching
395	   _ Software reset
396
397config SYS_I2C_UNIPHIER
398	bool "UniPhier I2C driver"
399	depends on ARCH_UNIPHIER && DM_I2C
400	default y
401	help
402	  Support for UniPhier I2C controller driver.  This I2C controller
403	  is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
404
405config SYS_I2C_UNIPHIER_F
406	bool "UniPhier FIFO-builtin I2C driver"
407	depends on ARCH_UNIPHIER && DM_I2C
408	default y
409	help
410	  Support for UniPhier FIFO-builtin I2C controller driver.
411	  This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.
412
413config SYS_I2C_MVTWSI
414	bool "Marvell I2C driver"
415	depends on DM_I2C
416	help
417	  Support for Marvell I2C controllers as used on the orion5x and
418	  kirkwood SoC families.
419
420config TEGRA186_BPMP_I2C
421	bool "Enable Tegra186 BPMP-based I2C driver"
422	depends on TEGRA186_BPMP
423	help
424	  Support for Tegra I2C controllers managed by the BPMP (Boot and
425	  Power Management Processor). On Tegra186, some I2C controllers are
426	  directly controlled by the main CPU, whereas others are controlled
427	  by the BPMP, and can only be accessed by the main CPU via IPC
428	  requests to the BPMP. This driver covers the latter case.
429
430config SYS_I2C_BUS_MAX
431	int "Max I2C busses"
432	depends on ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_SOCFPGA
433	default 2 if TI816X
434	default 3 if OMAP34XX || AM33XX || AM43XX || ARCH_KEYSTONE
435	default 4 if ARCH_SOCFPGA || OMAP44XX || TI814X
436	default 5 if OMAP54XX
437	help
438	  Define the maximum number of available I2C buses.
439
440config SYS_I2C_ZYNQ
441	bool "Xilinx I2C driver"
442	depends on ARCH_ZYNQMP || ARCH_ZYNQ
443	help
444	  Support for Xilinx I2C controller.
445
446config SYS_I2C_ZYNQ_SLAVE
447	hex "Set slave addr"
448	depends on SYS_I2C_ZYNQ
449	default 0
450	help
451	  Set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr.
452
453config SYS_I2C_ZYNQ_SPEED
454	int "Set I2C speed"
455	depends on SYS_I2C_ZYNQ
456	default 100000
457	help
458	  Set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting.
459
460config ZYNQ_I2C0
461	bool "Xilinx I2C0 controller"
462	depends on SYS_I2C_ZYNQ
463	help
464	  Enable Xilinx I2C0 controller.
465
466config ZYNQ_I2C1
467	bool "Xilinx I2C1 controller"
468	depends on SYS_I2C_ZYNQ
469	help
470	  Enable Xilinx I2C1 controller.
471
472config SYS_I2C_IHS
473        bool "gdsys IHS I2C driver"
474        depends on DM_I2C
475        help
476          Support for gdsys IHS I2C driver on FPGA bus.
477
478source "drivers/i2c/muxes/Kconfig"
479
480endmenu
481