u-boot.git/doc/device-tree-bindings/gpio, branch v2020.04

gpio/mpc83xx_spisel_boot.c: gpio driver for SPISEL_BOOT signal

2020-03-31T14:06:52Z

Some SoCs in the mpc83xx family, e.g. mpc8309, have a dedicated spi chip select, SPISEL_BOOT, that is used by the boot code to boot from flash. This chip select will typically be used to select a SPI boot flash. The SPISEL_BOOT signal is controlled by a single bit in the SPI_CS register. Implement a gpio driver for the spi chip select register. This allows a spi driver capable of using gpios as chip select, to bind a chip select to SPISEL_BOOT. It may be a little odd to do this as a GPIO driver, since the signal is neither GP or I, but it is quite convenient to present it to the spi driver that way. The alternative it to teach mpc8xxx_spi to handle the SPISEL_BOOT signal itself (that is how it's done in the linux kernel, see commit 69b921acae8a) Signed-off-by: Klaus H. Sorensen Signed-off-by: Rasmus Villemoes

x86: p2sb: Drop 'apl' prefix

2020-03-05T10:25:21Z

Drop the Apollo Lake prefix 'apl' from the functions, types and variables in the P2SB driver. The P2SB is not Apollo Lake specific, and as such it was moved in commit 2999846c1127 ("x86: Move P2SB from Apollo Lake to a more generic location") from the Apollo Lake folder to the intel_common folder. Signed-off-by: Wolfgang Wallner Reviewed-by: Simon Glass Reviewed-by: Bin Meng

x86: Add a generic Intel GPIO driver

2019-12-15T03:44:25Z

Add a GPIO driver which uses the pinctrl driver to access the pad information. This driver relies on the GPIO nodes being subnodes to the pinctrl device. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

gpio: fixes for gpio-hog support

2019-07-29T13:32:10Z

recently added gpio hog patch was "in discussion" state with Simon Glass. This patch now adds most of comments from Simon Glass. Signed-off-by: Heiko Schocher

gpio: add gpio-hog support

2019-07-13T15:11:30Z

add gpio-hog support. GPIO hogging is a mechanism providing automatic GPIO request and configuration as part of the gpio-controller's driver probe function. for more infos see: doc/device-tree-bindings/gpio/gpio.txt Signed-off-by: Heiko Schocher Tested-by: Michal Simek (zcu102) Tested-by: Patrick Delaunay

mips: mscc_sgpio: Add DT bindings documentation

2019-01-16T12:56:43Z

This add device tree binding documentation for the MSCC serial GPIO driver. Signed-off-by: Lars Povlsen Acked-by: Linus Walleij

CREG GPIO: add device tree bindings

2018-07-31T04:49:47Z

Signed-off-by: Eugeniy Paltsev Signed-off-by: Alexey Brodkin

gpio: bcm2835: add device tree support

2016-11-29T01:09:45Z

This patch adds device tree support for the bcm2835 GPIO driver. Signed-off-by: Fabian Vogt Reviewed-by: Simon Glass

gpio: Add driver for TI PCF8575 I2C GPIO expander

2016-08-08T17:32:53Z

TI's PCF8575 is a 16-bit I2C GPIO expander.The device features a 16-bit quasi-bidirectional I/O ports. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. The I/Os should be high before being used as inputs. Read the device documentation for more details[1]. This driver is based on pcf857x driver available in Linux v4.7 kernel. It supports basic reading and writing of gpio pins. [1] http://www.ti.com/lit/ds/symlink/pcf8575.pdf Signed-off-by: Vignesh R Reviewed-by: Tom Rini Reviewed-by: Simon Glass Reviewed-by: Mugunthan V N

x86: Update x86-pinctrl driver device-tree-bindings doc

2016-06-12T04:19:35Z

This updates the device-tree-bindings doc for x86-pinctrl driver: - clarify "gpio-offset" is required only when "mode-gpio" is set - correct property name "pull-strength" - use tab instead of space at several places Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Reviewed-by: Simon Glass