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/linux/Documentation/ABI/testing/
H A Dsysfs-bus-i3c1 What: /sys/bus/i3c/devices/i3c-<bus-id>
3 Contact: linux-i3c@vger.kernel.org
5 An I3C bus. This directory will contain one sub-directory per
6 I3C device present on the bus.
8 What: /sys/bus/i3c/devices/i3c-<bus-id>/current_master
10 Contact: linux-i3c@vger.kernel.org
17 What: /sys/bus/i3c/devices/i3c-<bus-id>/mode
19 Contact: linux-i3c@vger.kernel.org
21 I3C bus mode. Can be "pure", "mixed-fast" or "mixed-slow". See
22 the I3C specification for a detailed description of what each
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/linux/drivers/i3c/master/
H A Drenesas-i3c.c3 * Renesas I3C Controller driver
16 #include <linux/i3c/master.h>
318 static int renesas_i3c_get_free_pos(struct renesas_i3c *i3c) in renesas_i3c_get_free_pos() argument
320 if (!(i3c->free_pos & GENMASK(i3c->maxdevs - 1, 0))) in renesas_i3c_get_free_pos()
323 return ffs(i3c->free_pos) - 1; in renesas_i3c_get_free_pos()
326 static int renesas_i3c_get_addr_pos(struct renesas_i3c *i3c, u8 addr) in renesas_i3c_get_addr_pos() argument
330 for (pos = 0; pos < i3c->maxdevs; pos++) { in renesas_i3c_get_addr_pos()
331 if (addr == i3c->addrs[pos]) in renesas_i3c_get_addr_pos()
338 static struct renesas_i3c_xfer *renesas_i3c_alloc_xfer(struct renesas_i3c *i3c, in renesas_i3c_alloc_xfer() argument
354 static void renesas_i3c_start_xfer_locked(struct renesas_i3c *i3c) in renesas_i3c_start_xfer_locked() argument
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H A Dast2600-i3c-master.c14 #include "dw-i3c-master.h"
79 struct ast2600_i3c *i3c = to_ast2600_i3c(dw); in ast2600_i3c_init() local
84 rc = ast2600_i3c_pullup_to_reg(i3c->sda_pullup, &reg); in ast2600_i3c_init()
88 rc = regmap_write(i3c->global_regs, in ast2600_i3c_init()
89 AST2600_I3CG_REG0(i3c->global_idx), reg); in ast2600_i3c_init()
96 reg = AST2600_I3CG_REG1_INST_ID(i3c->global_idx); in ast2600_i3c_init()
97 rc = regmap_write(i3c->global_regs, in ast2600_i3c_init()
98 AST2600_I3CG_REG1(i3c->global_idx), reg); in ast2600_i3c_init()
103 static void ast2600_i3c_set_dat_ibi(struct dw_i3c_master *i3c, in ast2600_i3c_set_dat_ibi() argument
108 * The ast2600 i3c controller will lock up on receiving 4n+1-byte IBIs in ast2600_i3c_set_dat_ibi()
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H A Dsvc-i3c-master.c3 * Silvaco dual-role I3C master driver
14 #include <linux/i3c/master.h>
145 * I3C HW stalls the write transfer if the transmit FIFO becomes empty,
146 * when new data is written to FIFO, I3C HW resumes the transfer but
154 * I3C HW may generate an invalid SlvStart event when emitting a STOP.
203 * struct svc_i3c_master - Silvaco I3C Master structure
204 * @base: I3C master controller
213 * @num_clks: I3C clock number
215 * @clks: I3C clock array
542 * According to I3C spec ver 1.1, 09-Jun-2021, section 5.1.2.5: in svc_i3c_master_ibi_isr()
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/linux/include/linux/i3c/
H A Dmaster.h15 #include <linux/i3c/ccc.h>
16 #include <linux/i3c/device.h>
39 * struct i3c_i2c_dev_desc - Common part of the I3C/I2C device descriptor
40 * @node: node element used to insert the slot into the I2C or I3C device
42 * @master: I3C master that instantiated this device. Will be used to do
43 * I2C/I3C transfers
47 * This structure is describing common I3C/I2C dev information.
65 * @lvr: LVR (Legacy Virtual Register) needed by the I3C core to know about
69 * Each I2C device connected on the I3C bus should have one.
82 * @lvr: LVR (Legacy Virtual Register) needed by the I3C core to know about
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H A Ddevice.h19 * enum i3c_error_code - I3C error codes
21 * @I3C_ERROR_UNKNOWN: unknown error, usually means the error is not I3C
27 * These are the standard error codes as defined by the I3C specification.
42 * enum i3c_xfer_mode - I3C xfer mode ids
58 * struct i3c_xfer - I3C data transfer
66 * @err: I3C error code
86 * enum i3c_dcr - I3C DCR values
87 * @I3C_DCR_GENERIC_DEVICE: generic I3C device
111 * struct i3c_device_info - I3C device information
125 * These are all basic information that should be advertised by an I3C device.
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H A Dccc.h12 #include <linux/i3c/device.h>
14 /* I3C CCC (Common Command Codes) related definitions */
88 * The IBI length is only valid if the I3C slave is IBI capable
97 * struct i3c_ccc_dev_desc - I3C/I2C device descriptor used for DEFSLVS
99 * @dyn_addr: dynamic address assigned to the I3C slave or 0 if the entry is
102 * @lvr: LVR value (not applicable to entries describing I3C devices)
108 * descriptors (one entry per I3C/I2C dev controlled by the master).
154 * Information passed to the ENTTM CCC to instruct an I3C device to enter a
164 * @addr: dynamic address to assign to an I3C device
167 * dynamic address of an I3C device.
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/linux/arch/arm64/boot/dts/axiado/
H A Dax3000.dtsi232 /* I3C Controller 0 - 16 */
233 i3c0: i3c@80500400 {
234 compatible = "axiado,ax3000-i3c", "cdns,i3c-master";
241 i3c-scl-hz = <400000>;
247 i3c1: i3c@80500800 {
248 compatible = "axiado,ax3000-i3c", "cdns,i3c-master";
255 i3c-scl-hz = <400000>;
261 i3c2: i3c@80580400 {
262 compatible = "axiado,ax3000-i3c", "cdns,i3c-master";
269 i3c-scl-hz = <400000>;
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/linux/Documentation/devicetree/bindings/i3c/
H A Di3c.yaml4 $id: http://devicetree.org/schemas/i3c/i3c.yaml#
7 title: I3C bus
14 I3C busses can be described with a node for the primary I3C controller device
15 and a set of child nodes for each I2C or I3C slave on the bus. Each of them
20 pattern: "^i3c@[0-9a-f]+$"
27 All I3C devices are supposed to support DAA (Dynamic Address Assignment),
28 and are thus discoverable. So, by default, I3C devices do not have to be
32 I3C devices.
34 Another use case for describing an I3C device in the device tree is when
35 this I3C device has a static I2C address and we want to assign it a
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H A Dsilvaco,i3c-master.yaml4 $id: http://devicetree.org/schemas/i3c/silvaco,i3c-master.yaml#
7 title: Silvaco I3C master
16 - nuvoton,npcm845-i3c
17 - silvaco,i3c-master-v1
20 - nxp,imx94-i3c
21 - nxp,imx95-i3c
22 - const: silvaco,i3c-master-v1
55 - $ref: i3c.yaml#
60 - nuvoton,npcm845-i3c
61 - silvaco,i3c-master-v1
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H A Dmipi-i3c-hci.yaml4 $id: http://devicetree.org/schemas/i3c/mipi-i3c-hci.yaml#
7 title: MIPI I3C HCI
13 - $ref: /schemas/i3c/i3c.yaml#
16 MIPI I3C Host Controller Interface
18 The MIPI I3C HCI (Host Controller Interface) specification defines
19 a common software driver interface to support compliant MIPI I3C
27 https://www.mipi.org/specifications/i3c-hci
31 const: mipi-i3c-hci
46 i3c@a0000000 {
47 compatible = "mipi-i3c-hci";
H A Daspeed,ast2600-i3c.yaml4 $id: http://devicetree.org/schemas/i3c/aspeed,ast2600-i3c.yaml#
7 title: ASPEED AST2600 i3c controller
13 - $ref: i3c.yaml#
17 const: aspeed,ast2600-i3c
41 - description: phandle to i3c global register syscon node
42 - description: index of this i3c controller in the global register set
44 A (phandle, controller index) reference to the i3c global register set
60 i3c@2000 {
61 compatible = "aspeed,ast2600-i3c";
H A Dcdns,i3c-master.yaml4 $id: http://devicetree.org/schemas/i3c/cdns,i3c-master.yaml#
7 title: Cadence I3C master block
13 - $ref: i3c.yaml#
18 - const: cdns,i3c-master
21 - axiado,ax3000-i3c
22 - const: cdns,i3c-master
49 i3c@d040000 {
50 compatible = "cdns,i3c-master";
H A Dsnps,dw-i3c-master.yaml4 $id: http://devicetree.org/schemas/i3c/snps,dw-i3c-master.yaml#
7 title: Synopsys DesignWare I3C master block
13 - $ref: i3c.yaml#
18 - const: snps,dw-i3c-master-1.00a
20 - const: altr,agilex5-dw-i3c-master
21 - const: snps,dw-i3c-master-1.00a
54 i3c@2000 {
55 compatible = "snps,dw-i3c-master-1.00a";
/linux/drivers/i3c/
H A DKconfig3 menuconfig I3C config
4 tristate "I3C support"
7 I3C is a serial protocol standardized by the MIPI alliance.
13 The I3C protocol also standardizes the slave device types and is
16 If you want I3C support, you should say Y here and also to the
19 This I3C support can also be built as a module. If so, the module
20 will be called i3c.
22 if I3C
23 source "drivers/i3c/master/Kconfig"
24 endif # I3C
H A Dmaster.c31 * @bus: I3C bus to take the lock on
42 * logic to rely on I3C device information that could be changed behind their
53 * @bus: I3C bus to release the lock on
66 * @bus: I3C bus to take the lock on
70 * maintenance operations). Basically all communications with I3C devices are
72 * state or I3C dynamic address).
75 * In other words, transfer requests passed to the I3C master can be submitted
76 * in parallel and I3C master drivers have to use their own locking to make
87 * @bus: I3C bus to release the lock on
251 struct i3c_device *i3c = dev_to_i3cdev(dev); in modalias_show() local
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H A Ddevice.c18 * i3c_device_do_xfers() - do I3C transfers directed to a specific device
33 * 'xfers' some time later. See I3C spec ver 1.1.1 09-Jun-2021. Section:
58 * i3c_device_do_setdasa() - do I3C dynamic address assignement with
78 * i3c_device_get_info() - get I3C device information
83 * Retrieve I3C dev info.
205 * @i3cdev: I3C device
217 * @i3cdev: I3C device
218 * @id_table: I3C device match table
265 * @dev: I3C device
277 * i3c_driver_register_with_owner() - register an I3C device driver
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/linux/drivers/net/mctp/
H A Dmctp-i3c.c4 * "DSP0233 Management Component Transport Protocol (MCTP) I3C Transport
13 #include <linux/i3c/device.h>
14 #include <linux/i3c/master.h>
73 struct i3c_device *i3c; member
82 /* I3C dynamic address */
128 /* Make sure netif_rx() is read in the same order as i3c. */ in mctp_i3c_read()
130 rc = i3c_device_do_xfers(mi->i3c, &xfer, 1, I3C_SDR); in mctp_i3c_read()
135 /* Bad i3c bus driver */ in mctp_i3c_read()
179 static void mctp_i3c_ibi_handler(struct i3c_device *i3c, in mctp_i3c_ibi_handler() argument
182 struct mctp_i3c_device *mi = i3cdev_get_drvdata(i3c); in mctp_i3c_ibi_handler()
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H A DKconfig42 tristate "MCTP I3C transport"
43 depends on I3C
45 Provides a driver to access MCTP devices over I3C transport,
47 A MCTP protocol network device is created for each I3C bus
/linux/drivers/base/regmap/
H A Dregmap-i3c.c6 #include <linux/i3c/device.h>
7 #include <linux/i3c/master.h>
13 struct i3c_device *i3c = dev_to_i3cdev(dev); in regmap_i3c_write() local
22 return i3c_device_do_xfers(i3c, xfers, ARRAY_SIZE(xfers), I3C_SDR); in regmap_i3c_write()
30 struct i3c_device *i3c = dev_to_i3cdev(dev); in regmap_i3c_read() local
41 return i3c_device_do_xfers(i3c, xfers, ARRAY_SIZE(xfers), I3C_SDR); in regmap_i3c_read()
49 struct regmap *__devm_regmap_init_i3c(struct i3c_device *i3c, in __devm_regmap_init_i3c() argument
54 return __devm_regmap_init(&i3c->dev, &regmap_i3c, &i3c->dev, config, in __devm_regmap_init_i3c()
60 MODULE_DESCRIPTION("regmap I3C Module");
/linux/drivers/misc/amd-sbi/
H A DKconfig7 depends on I3C || !I3C
8 select REGMAP_I3C if I3C
10 Side band RMI over I2C/I3C support for AMD out of band management.
/linux/drivers/iio/imu/inv_icm45600/
H A Dinv_icm45600_i3c.c9 #include <linux/i3c/device.h>
10 #include <linux/i3c/master.h>
24 MODULE_DEVICE_TABLE(i3c, inv_icm45600_i3c_ids);
48 "Failed to register i3c regmap %ld\n", PTR_ERR(regmap)); in inv_icm45600_i3c_probe()
77 MODULE_DESCRIPTION("InvenSense ICM-456xx i3c driver");
H A DKconfig52 tristate "InvenSense ICM-456xx I3C driver"
53 depends on I3C
58 devices over I3C.
70 inv-icm45600-i3c.
/linux/drivers/i3c/master/mipi-i3c-hci/
H A Dxfer_mode_rate.h9 * This applies starting from I3C HCI v2.0.
22 #define XFERMODE_IDX_I3C_SDR 0x00 /* I3C SDR Mode */
23 #define XFERMODE_IDX_I3C_HDR_DDR 0x01 /* I3C HDR-DDR Mode */
24 #define XFERMODE_IDX_I3C_HDR_T 0x02 /* I3C HDR-Ternary Mode */
25 #define XFERMODE_IDX_I3C_HDR_BT 0x03 /* I3C HDR-BT Mode */
/linux/drivers/iio/imu/st_lsm6dsx/
H A Dst_lsm6dsx_i3c.c11 #include <linux/i3c/device.h>
22 MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
37 dev_err(dev, "Failed to register i3c regmap %ld\n", PTR_ERR(regmap)); in st_lsm6dsx_i3c_probe()
55 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");

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