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/Linux-v5.4/Documentation/devicetree/bindings/gpio/
Draspberrypi,firmware-gpio.txt1 Raspberry Pi GPIO expander
3 The Raspberry Pi 3 GPIO expander is controlled by the VC4 firmware. The
5 GPIO lines on the expander.
7 The Raspberry Pi GPIO expander node must be a child node of the Raspberry Pi
Dgpio-pca953x.txt37 - gpio-controller: if used as gpio expander.
38 - #gpio-cells: if used as gpio expander.
39 - interrupt-controller: if to be used as interrupt expander.
40 - #interrupt-cells: if to be used as interrupt expander.
Dgpio-max732x.txt23 The I/O expander can detect input state changes, and thus optionally act as
24 an interrupt controller. When the expander interrupt line is connected all the
40 expander: max7325@6d {
53 expander: max7325@6d {
Dgpio-adnp.txt1 Avionic Design N-bit GPIO expander bindings
13 The GPIO expander can optionally be used as an interrupt controller, in
Dgpio-pcf857x.txt44 The I/O expander can detect input state changes, and thus optionally act as
45 an interrupt controller. When the expander interrupt line is connected all the
58 Example: PCF8575 I/O expander node
Dgpio-moxtet.txt1 Turris Mox Moxtet GPIO expander via Moxtet bus
Dgpio-xra1403.txt3 The XRA1403 is an 16-bit GPIO expander with an SPI interface. Features available:
/Linux-v5.4/Documentation/devicetree/bindings/pinctrl/
Dpinctrl-sx150x.txt1 SEMTECH SX150x GPIO expander bindings
32 - semtech,probe-reset: Will trigger a reset of the GPIO expander on probe,
35 The GPIO expander can optionally be used as an interrupt controller, in
54 i2c0gpio-expander@20{
/Linux-v5.4/arch/arm/boot/dts/
Ddove-sbc-a510.dts46 * SBC-A510 comprises a PCA9555 I2C GPIO expander its GPIO lines connected to
104 * USB port 0 can be powered and monitored by I2C GPIO expander:
122 * - GPIO expander, NXP PCA9555, 0x20
142 /* NXP PCA9555 GPIO expander */
170 * SDIO0 is connected to a MMC/SD/SDIO socket, I2C GPIO expander has
Darmada-388-clearfog.dtsi120 * PCA9655 GPIO expander, up to 1MHz clock.
138 expander0: gpio-expander@20 {
Darmada-388-helios4.dts149 * PCA9655 GPIO expander, up to 1MHz clock.
155 expander0: gpio-expander@20 {
Dvf610-zii-dev-rev-b.dts331 gpio5: io-expander@20 {
339 gpio6: io-expander@22 {
Dvf610-zii-dev-rev-c.dts277 gpio5: io-expander@18 {
325 gpio7: io-expander@22 {
Darmada-370-seagate-nas-4bay.dts38 /* I2C GPIO expander (PCA9554A) */
Dvf610-zii-scu4-aib.dts508 gpio5: io-expander@20 {
515 gpio6: io-expander@22 {
582 gpio7: io-expander@23 {
Darmada-388-clearfog.dts58 * PCA9655 GPIO expander:
/Linux-v5.4/Documentation/hwmon/
Draspberrypi-hwmon.rst9 * Raspberry Pi 3 B (via GPIO on port expander)
/Linux-v5.4/arch/arm/mach-davinci/
DKconfig142 based GPIO expander on that board. This option selected in this
166 prompt "Select peripherals connected to expander on UI board"
171 based GPIO expander on that card. This option selected in this
178 to TCA6416 expander on DA850/OMAP-L138/AM18x EVM UI card
/Linux-v5.4/Documentation/devicetree/bindings/i2c/
Di2c-arb.txt17 with a NXP pca8574 GPIO expander attached.
/Linux-v5.4/Documentation/scsi/
Dlibsas.txt18 * Expander management and exporting expander control
276 - events marked E (expander) if it wants the SAS layer
364 In each expander directory in sysfs, there is a file called
375 2. Open the expander's SMP portal sysfs file in RW mode.
391 expander, and gives expander information, including routing
394 The SMP portal gives you complete control of the expander,
/Linux-v5.4/Documentation/devicetree/bindings/mfd/
Dstmfx.txt28 Please refer to ../pinctrl/pinctrl-stmfx.txt for STMFX GPIO expander function bindings.
/Linux-v5.4/drivers/pinctrl/
DKconfig164 tristate "Microchip MCP23xxx I/O expander"
247 bool "Semtech SX150x I2C GPIO expander pinctrl driver"
278 tristate "STMicroelectronics STMFX GPIO expander pinctrl driver"
286 GPIO expander.
/Linux-v5.4/Documentation/devicetree/bindings/leds/
Dleds-pca9532.txt3 The PCA9532 family is SMBus I/O expander optimized for dimming LEDs.
/Linux-v5.4/Documentation/leds/
Dleds-lp3944.rst23 DIM modes; it could even be used as a gpio expander but this driver assumes it
/Linux-v5.4/drivers/gpio/
DKconfig141 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
822 tristate "ADP5588 I2C GPIO expander"
836 tristate "Avionic Design N-bit GPIO expander"
855 tristate "Maxim MAX7300 GPIO expander"
858 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
946 tristate "TPIC2810 8-Bit I2C GPO expander"
1088 tristate "TI/National Semiconductor LP3943 GPIO expander"
1092 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1433 tristate "Maxim MAX7301 GPIO expander"
1436 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
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