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/Linux-v5.10/Documentation/devicetree/bindings/i2c/
Dsnps,designware-i2c.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/i2c/snps,designware-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Synopsys DesignWare APB I2C Controller
10 - Jarkko Nikula <jarkko.nikula@linux.intel.com>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
14 - if:
19 const: mscc,ocelot-i2c
28 - description: Generic Synopsys DesignWare I2C controller
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Di2c-at91.txt1 I2C for Atmel platforms
4 - compatible : Must be one of:
5 "atmel,at91rm9200-i2c",
6 "atmel,at91sam9261-i2c",
7 "atmel,at91sam9260-i2c",
8 "atmel,at91sam9g20-i2c",
9 "atmel,at91sam9g10-i2c",
10 "atmel,at91sam9x5-i2c",
11 "atmel,sama5d4-i2c",
12 "atmel,sama5d2-i2c",
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/Linux-v5.10/arch/arc/boot/dts/
Dabilis_tb100_dvk.dts1 // SPDX-License-Identifier: GPL-2.0-only
10 /dts-v1/;
29 pinctrl-names = "default";
30 pinctrl-0 = <&pctl_uart0>;
33 phy-mode = "rgmii";
36 i2c0: i2c@ff120000 {
37 i2c-sda-hold-time-ns = <432>;
39 i2c1: i2c@ff121000 {
40 i2c-sda-hold-time-ns = <432>;
42 i2c2: i2c@ff122000 {
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Dabilis_tb101_dvk.dts1 // SPDX-License-Identifier: GPL-2.0-only
10 /dts-v1/;
29 pinctrl-names = "default";
30 pinctrl-0 = <&pctl_uart0>;
33 phy-mode = "rgmii";
36 i2c0: i2c@ff120000 {
37 i2c-sda-hold-time-ns = <432>;
39 i2c1: i2c@ff121000 {
40 i2c-sda-hold-time-ns = <432>;
42 i2c2: i2c@ff122000 {
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/Linux-v5.10/drivers/mfd/
Dintel-lpss-acpi.c1 // SPDX-License-Identifier: GPL-2.0-only
19 #include "intel-lpss.h"
26 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
36 PROPERTY_ENTRY_U32("reg-io-width", 4),
37 PROPERTY_ENTRY_U32("reg-shift", 2),
38 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
53 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
54 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
55 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
65 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
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Dintel-lpss-pci.c1 // SPDX-License-Identifier: GPL-2.0-only
18 #include "intel-lpss.h"
30 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), in intel_lpss_pci_probe()
33 return -ENOMEM; in intel_lpss_pci_probe()
35 info->mem = &pdev->resource[0]; in intel_lpss_pci_probe()
36 info->irq = pdev->irq; in intel_lpss_pci_probe()
38 pdev->d3cold_delay = 0; in intel_lpss_pci_probe()
44 ret = intel_lpss_probe(&pdev->dev, info); in intel_lpss_pci_probe()
48 pm_runtime_put(&pdev->dev); in intel_lpss_pci_probe()
49 pm_runtime_allow(&pdev->dev); in intel_lpss_pci_probe()
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/Linux-v5.10/arch/arm/boot/dts/
Dat91-sama5d2_xplained.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * at91-sama5d2_xplained.dts - Device Tree file for SAMA5D2 Xplained board
8 /dts-v1/;
10 #include "sama5d2-pinfunc.h"
11 #include <dt-bindings/mfd/atmel-flexcom.h>
12 #include <dt-bindings/gpio/gpio.h>
13 #include <dt-bindings/regulator/active-semi,8945a-regulator.h>
17 compatible = "atmel,sama5d2-xplained", "atmel,sama5d2", "atmel,sama5";
27 stdout-path = "serial0:115200n8";
32 clock-frequency = <32768>;
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/Linux-v5.10/arch/mips/boot/dts/mscc/
Docelot_pcb123.dts1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
4 /dts-v1/;
9 compatible = "mscc,ocelot-pcb123", "mscc,ocelot";
12 stdout-path = "serial0:115200n8";
33 compatible = "macronix,mx25l25635f", "jedec,spi-nor";
34 spi-max-frequency = <20000000>;
39 &i2c {
40 clock-frequency = <100000>;
41 i2c-sda-hold-time-ns = <300>;
50 phy-handle = <&phy0>;
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/Linux-v5.10/drivers/i2c/busses/
Di2c-rk3x.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Driver for I2C adapter in Rockchip RK3xxx SoC
11 #include <linux/i2c.h>
84 * @min_hold_start_ns: min hold time (repeated) START condition
87 * @min_setup_start_ns: min set-up time for a repeated START conditio
88 * @max_data_hold_ns: max data hold time
89 * @min_data_setup_ns: min data set-up time
90 * @min_setup_stop_ns: min set-up time for STOP condition
91 * @min_hold_buffer_ns: min bus free time between a STOP and
142 * @tuning: Used to adjust setup/hold data time,
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Di2c-axxia.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * This driver implements I2C master functionality using the LSI API2C
7 * maximum 255 bytes at a time. If a larger transfer is attempted, error code
8 * (-EINVAL) is returned.
14 #include <linux/i2c.h>
84 #define SLV_ADDR_DEC_SA1M BIT(3) /* 10-bit addressing for addr_1 enabled */
86 #define SLV_ADDR_DEC_SA2M BIT(5) /* 10-bit addressing for addr_2 enabled */
121 * axxia_i2c_dev - I2C device context
130 * @adapter: core i2c abstraction
131 * @i2c_clk: clock reference for i2c input clock
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Di2c-designware-master.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Synopsys DesignWare I2C adapter driver (master only).
5 * Based on the TI DAVINCI I2C adapter driver.
16 #include <linux/i2c.h>
24 #include "i2c-designware-core.h"
29 regmap_write(dev->map, DW_IC_TX_TL, dev->tx_fifo_depth / 2); in i2c_dw_configure_fifo_master()
30 regmap_write(dev->map, DW_IC_RX_TL, 0); in i2c_dw_configure_fifo_master()
32 /* Configure the I2C master */ in i2c_dw_configure_fifo_master()
33 regmap_write(dev->map, DW_IC_CON, dev->master_cfg); in i2c_dw_configure_fifo_master()
41 struct i2c_timings *t = &dev->timings; in i2c_dw_set_timings_master()
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Di2c-altera.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Based on the i2c-axxia.c driver.
10 #include <linux/i2c.h>
46 #define ALTR_I2C_SDA_HOLD 0x28 /* SDA hold count register */
58 * altr_i2c_dev - I2C device context
65 * @adapter: core i2c abstraction
66 * @i2c_clk: clock reference for i2c input clock
67 * @bus_clk_rate: current i2c bus clock rate
96 int_en = readl(idev->base + ALTR_I2C_ISER); in altr_i2c_int_enable()
98 idev->isr_mask = int_en | mask; in altr_i2c_int_enable()
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Di2c-at91-master.c1 // SPDX-License-Identifier: GPL-2.0
3 * i2c Support for Atmel's AT91 Two-Wire Interface (TWI)
18 #include <linux/dma-mapping.h>
22 #include <linux/i2c.h>
29 #include <linux/platform_data/dma-atmel.h>
32 #include "i2c-at91.h"
36 struct at91_twi_pdata *pdata = dev->pdata; in at91_init_twi_bus_master()
40 if (dev->fifo_size) in at91_init_twi_bus_master()
44 at91_twi_write(dev, AT91_TWI_CWGR, dev->twi_cwgr_reg); in at91_init_twi_bus_master()
47 if (pdata->has_dig_filtr && dev->enable_dig_filt) in at91_init_twi_bus_master()
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Di2c-stm32f7.c1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for STMicroelectronics STM32F7 I2C controller
5 * This I2C controller is described in the STM32F75xxx and STM32F74xxx Soc
14 * This driver is based on i2c-stm32f4.c
20 #include <linux/i2c.h>
21 #include <linux/i2c-smbus.h>
38 #include "i2c-stm32.h"
40 /* STM32F7 I2C registers */
52 /* STM32F7 I2C control 1 */
80 /* STM32F7 I2C control 2 */
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Di2c-img-scb.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C adapter for the IMG Serial Control Bus (SCB) IP block.
7 * There are three ways that this I2C controller can be driven:
9 * - Raw control of the SDA and SCK signals.
15 * - Atomic commands. A low level I2C symbol (such as generate
20 * This mode of operation is used by MODE_ATOMIC, which uses an I2C
21 * state machine in the interrupt handler to compose/react to I2C
26 * in suboptimal use of the bus, with gaps between the I2C symbols while
29 * - Automatic mode. A bus address, and whether to read/write is
30 * specified, and the hardware takes care of the I2C state machine,
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/Linux-v5.10/arch/arm64/boot/dts/microchip/
Dsparx5.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 #include <dt-bindings/gpio/gpio.h>
7 #include <dt-bindings/interrupt-controller/arm-gic.h>
8 #include <dt-bindings/clock/microchip,sparx5.h>
12 interrupt-parent = <&gic>;
13 #address-cells = <2>;
14 #size-cells = <1>;
23 stdout-path = "serial0:115200n8";
27 #address-cells = <2>;
28 #size-cells = <0>;
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/Linux-v5.10/include/linux/
Di2c.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * i2c.h - definitions for the Linux i2c bus interface
4 * Copyright (C) 1995-2000 Simon G. Vogl
5 * Copyright (C) 2013-2019 Wolfram Sang <wsa@kernel.org>
22 #include <uapi/linux/i2c.h>
28 /* --- General options ------------------------------------------------ */
42 /* I2C Frequency Modes */
57 * transmit one message at a time, a more complex version can be used to
65 * i2c_master_recv - issue a single I2C message in master receive mode
79 * i2c_master_recv_dmasafe - issue a single I2C message in master receive mode
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/Linux-v5.10/arch/arm64/boot/dts/hisilicon/
Dhi6220.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include <dt-bindings/reset/hisi,hi6220-resets.h>
10 #include <dt-bindings/clock/hi6220-clock.h>
11 #include <dt-bindings/pinctrl/hisi.h>
12 #include <dt-bindings/thermal/thermal.h>
16 interrupt-parent = <&gic>;
17 #address-cells = <2>;
18 #size-cells = <2>;
21 compatible = "arm,psci-0.2";
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/Linux-v5.10/drivers/i2c/
Di2c-core-base.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Linux I2C core
5 * Copyright (C) 1995-99 Simon G. Vogl
10 * Copyright (C) 2013-2017 Wolfram Sang <wsa@kernel.org>
13 #define pr_fmt(fmt) "i2c-core: " fmt
15 #include <dt-bindings/i2c/i2c.h>
17 #include <linux/clk/clk-conf.h>
23 #include <linux/i2c.h>
24 #include <linux/i2c-smbus.h>
43 #include "i2c-core.h"
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/Linux-v5.10/drivers/net/ethernet/intel/ixgbe/
Dixgbe_phy.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
29 * ixgbe_out_i2c_byte_ack - Send I2C byte with ack
46 * ixgbe_in_i2c_byte_ack - Receive an I2C byte and send ack
64 * ixgbe_ones_comp_byte_add - Perform one's complement addition
68 * Returns one's complement 8-bit sum.
79 * ixgbe_read_i2c_combined_generic_int - Perform I2C read combined operation
81 * @addr: I2C bus address to read from
82 * @reg: I2C device register to read from
91 u32 swfw_mask = hw->phy.phy_semaphore_mask; in ixgbe_read_i2c_combined_generic_int()
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/Linux-v5.10/arch/arm64/boot/dts/arm/
Djuno-base.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include "juno-clocks.dtsi"
3 #include "juno-motherboard.dtsi"
11 compatible = "arm,armv7-timer-mem";
13 clock-frequency = <50000000>;
14 #address-cells = <1>;
15 #size-cells = <1>;
19 frame-number = <1>;
30 interrupt-names = "mhu_lpri_rx",
32 #mbox-cells = <1>;
[all …]
/Linux-v5.10/drivers/gpu/drm/omapdrm/dss/
Dhdmi5_core.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
28 void __iomem *base = core->base; in hdmi5_core_ddc_init()
30 const unsigned int ss_scl_high = 4700; /* ns */ in hdmi5_core_ddc_init()
31 const unsigned int ss_scl_low = 5500; /* ns */ in hdmi5_core_ddc_init()
32 const unsigned int fs_scl_high = 600; /* ns */ in hdmi5_core_ddc_init()
33 const unsigned int fs_scl_low = 1300; /* ns */ in hdmi5_core_ddc_init()
34 const unsigned int sda_hold = 1000; /* ns */ in hdmi5_core_ddc_init()
79 /* SDA Hold Time */ in hdmi5_core_ddc_init()
107 void __iomem *base = core->base; in hdmi5_core_ddc_uninit()
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/Linux-v5.10/drivers/video/fbdev/omap2/omapfb/dss/
Dhdmi5_core.c1 // SPDX-License-Identifier: GPL-2.0-only
41 void __iomem *base = core->base; in hdmi_core_ddc_init()
43 const unsigned ss_scl_high = 4600; /* ns */ in hdmi_core_ddc_init()
44 const unsigned ss_scl_low = 5400; /* ns */ in hdmi_core_ddc_init()
45 const unsigned fs_scl_high = 600; /* ns */ in hdmi_core_ddc_init()
46 const unsigned fs_scl_low = 1300; /* ns */ in hdmi_core_ddc_init()
47 const unsigned sda_hold = 1000; /* ns */ in hdmi_core_ddc_init()
92 /* SDA Hold Time */ in hdmi_core_ddc_init()
120 void __iomem *base = core->base; in hdmi_core_ddc_uninit()
122 /* Mask I2C interrupts */ in hdmi_core_ddc_uninit()
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/Linux-v5.10/drivers/media/dvb-frontends/drx39xyj/
Ddrxj.c2 Copyright (c), 2004-2005,2007-2010 Trident Microsystems, Inc.
52 /*-----------------------------------------------------------------------------
54 ----------------------------------------------------------------------------*/
74 #define DRX39XX_MAIN_FIRMWARE "dvb-fe-drxj-mc-1.0.8.fw"
200 /*-----------------------------------------------------------------------------
202 ----------------------------------------------------------------------------*/
204 /*-----------------------------------------------------------------------------
206 ----------------------------------------------------------------------------*/
208 #define DRXJ_WAKE_UP_KEY (demod->my_i2c_dev_addr->i2c_addr)
213 * \brief Default I2C address of a demodulator instance.
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