The Linux driver supports the TCA9554 Remote 8-Bit I2C and SMBus I/O Expander. The Linux driver supports communication through the I2C bus and interfaces with the GPIO sub-systems.
Available in Linux Main line: Yes
Available through git.ti.com: N/A
The files associated with this device are:
Documentation/devicetree/bindings/gpio/gpio-pcf857x.txt
Configure kernel with "make menuconfig" (alternatively use "make xconfig" or"make nconfig")
Symbol: GPIO_PCF857X [=y]Type : tristatePrompt: PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders Location: -> Device Drivers -> GPIO Support (GPIOLIB [=y]) -> I2C GPIO expanders Defined at drivers/gpio/Kconfig:647 Depends on: GPIOLIB [=y] && I2C [=y] Selects: GPIOLIB_IRQCHIP [=y] && IRQ_DOMAIN [=y] Selected by: MACH_DAVINCI_DA830_EVM [=y] && ARCH_DAVINCI [=y] && ARCH_DAVINCI_DA830 [=y]
If there are fixes and or code enhancements that need to be added to thisdriver please either1. Send the patches to the relevant Linux Kernel community as listed in the maintainers file located: Hereor2. Contact your TI representative.
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