u-boot/doc/device-tree-bindings
Alper Nebi Yasak 1b9ee2882e pwm: Add a driver for Chrome OS EC PWM
This PWM is used in rk3399-gru-bob and rk3399-gru-kevin to control
the display brightness. We can only change the duty cycle, so on
set_config() we just try to match the duty cycle that dividing duty_ns
by period_ns gives us. To disable, we set the duty cycle to zero while
keeping the old value for when we want to re-enable it.

The cros_ec_set_pwm_duty() function is taken from Depthcharge's
cros_ec_set_bl_pwm_duty() but modified to use the generic pwm type.
The driver itself is very loosely based on rk_pwm.c for the general pwm
driver structure.

The devicetree binding file is from Linux, before it was converted to
YAML at 5df5a577a6b4 ("dt-bindings: pwm: Convert google,cros-ec-pwm.txt
to YAML format") in their repo.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-04-10 16:08:39 +02:00
..
adc dt-bindings: Document STM32 ADC DT bindings 2018-08-03 19:53:10 -04:00
arm dt-bindings: arm: SCMI bindings documentation 2020-09-30 11:55:23 -04:00
ata x86: ivybridge: Add SATA init 2014-11-25 06:34:01 -07:00
axi doc: Remove duplicated documentation directory 2019-06-20 10:57:08 -04:00
bus dm: Add support for simple-pm-bus 2020-07-01 15:01:21 +08:00
clock stm32mp1: clk: configure pll1 with OPP 2020-07-07 16:01:23 +02:00
cpu doc: Remove duplicated documentation directory 2019-06-20 10:57:08 -04:00
exynos s5p: cpu_info: print "cpu-model" if exists in dts 2015-11-02 10:37:59 +09:00
firmware dt/bindings: add bindings for optee 2018-10-07 10:47:38 -04:00
fpga ARM: socfpga: Description on FPGA bitstream type and file name for Arria 10 2019-05-10 22:48:10 +02:00
fsp/fsp2/apollolake x86: fsp: Replace e-mmc with emmc in devicetree bindings 2020-09-21 16:41:35 +08:00
gpio msm_gpio: Add support for Qualcomm IPQ40xx 2020-07-29 08:43:40 -04:00
gpu tegra124: dts: Add host1x node to provide display information 2015-05-13 09:24:08 -07:00
i2c i2c: Add a generic driver to generate ACPI info 2020-09-25 11:27:15 +08:00
input dt-bindings: input: adc-keys bindings documentation 2021-02-18 11:37:26 +01:00
interrupt-controller tpm: cr50: Use the correct GPIO binding 2020-04-16 14:36:28 +08:00
leds led: add initial support for bcm6858 2019-04-22 18:13:24 -04:00
mailbox mailbox: Introduce K3 Secure Proxy Driver 2018-09-11 08:32:55 -04:00
memory fdt: Add device tree memory bindings 2018-07-09 09:11:00 -06:00
memory-controller dt-bindings: memory-controller: Introduce J721E DDRSS bindings 2019-10-25 17:33:21 -04:00
memory-controllers ram: stm32mp1: the property st, phy-cal becomes optional 2020-03-24 14:23:30 +01:00
mfd clk: Add K210 clock support 2020-07-01 15:01:21 +08:00
misc Merge tag 'ti-v2020.07-next' of https://gitlab.denx.de/u-boot/custodians/u-boot-ti into next 2020-03-17 11:59:58 -04:00
mmc ARC: dwmmc: Adding DesignWare MMC driver support for ARC devboards 2019-04-18 09:12:38 +03:00
mtd ARM: dts: stm32mp1: DT alignment with kernel v5.4 2020-02-13 17:25:34 +01:00
nand tegra: fdt: Add NAND controller binding and definitions 2012-09-07 13:54:30 -07:00
net net: tsec: Add the compatible string "gianfar" support 2020-09-24 08:27:44 -04:00
pci dm: pci: Allow disabling auto-config for a device 2020-04-16 14:36:28 +08:00
pci_endpoint pci_ep: add Cadence PCIe endpoint driver 2019-07-11 10:05:15 -04:00
phy phy: stm32: usbphyc: manage optional vbus regulator on phy_power_on/off 2020-11-25 12:02:58 +01:00
pinctrl dt-bindings: pinctrl: at91-pio4: add slew-rate 2021-03-02 09:28:33 +02:00
pmic power: pmic: add Ricoh RN5T567 PMIC support 2016-10-07 12:26:15 +02:00
power dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared access 2019-07-26 21:49:23 -04:00
pwm pwm: Add a driver for Chrome OS EC PWM 2021-04-10 16:08:39 +02:00
ram doc: Remove duplicated documentation directory 2019-06-20 10:57:08 -04:00
regulator dm: regulator: support regulator more state 2019-11-10 20:31:09 +08:00
remoteproc remoteproc: k3_r5: Sync to upstreamed kernel DT property names 2021-02-04 20:37:56 +05:30
reserved-memory doc: Remove duplicated documentation directory 2019-06-20 10:57:08 -04:00
reset reset: Add generic reset driver 2020-07-01 15:01:21 +08:00
rtc doc: device-tree-bindings: rtc: Abracon AB x80x i2c rtc 2021-01-27 17:07:48 -05:00
serial msm_serial: Read bit rate register value from DT 2020-07-29 08:43:40 -04:00
soc/fsl/cpm_qe/qe net, qe: add DM support for QE UEC ethernet 2020-09-17 06:09:53 +02:00
sound sound: Add an ACPI driver for Maxim MAX98357ac 2020-07-17 14:32:24 +08:00
spi spi: dw: Document devicetree binding 2020-12-18 16:16:37 +05:30
spmi drivers: spmi: Add support for Qualcomm SPMI bus driver 2016-04-01 17:18:12 -04:00
sysinfo x86: coral: Show memory config and SKU ID on startup 2021-03-27 16:26:48 +13:00
sysreset sysreset: Add TI System Control Interface (TI SCI) sysreset driver 2018-09-11 08:32:55 -04:00
thermal thermal: ti-bandgap: Add support for temperature sensor 2017-11-21 08:03:38 -05:00
timer doc: Remove duplicated documentation directory 2019-06-20 10:57:08 -04:00
tpm2 tpm2: tis_spi: add linux compatible fallback string 2020-07-08 15:38:32 -04:00
usb dt-bindings: usb: mtk-xhci: add optional properies to disable ports 2021-02-10 22:23:24 +01:00
video video: seps525: Add dt binding description 2021-01-05 11:54:53 +01:00
w1 w1: Add driver for i.MX bus master controller 2019-01-01 14:12:18 +01:00
w1-eeprom w1-eeprom: Add support for Maxim DS2502 add only memory 2018-11-16 16:51:55 -05:00
chosen.txt x86: Add a way to add to the e820 memory table 2020-09-25 11:27:25 +08:00
config.txt rockchip: rk3399-puma: add code to allow forcing a power-on reset 2017-11-30 22:59:54 +01:00
device.txt x86: Add wake sources for the acpi_gpe driver 2020-09-25 11:27:15 +08:00
README fdt: Add staging area for device tree binding documentation 2012-03-29 08:12:47 +02:00
root.txt fdt: Pass the device serial number through devicetree 2015-06-05 08:32:07 -06:00

Device Tree Bindings Staging Area
=================================

This directory contains device tree bindings for U-Boot.

These follow along with Linux kernel bindings, with a few additions. By
adding the files here, U-Boot patches can clearly show thees additions.
This makes it easier for device tree people to review these additions in
patches sent to the U-Boot mailing list.

The intent IS to commit these files to U-Boot. Hopefully at some point
the files will be stored in another repo (shared with Linux) which is
brought in as needed. Changes here are intended to mirror changes in the
Linux Documentation/devicetree/bindings/ directory.

sjg@chromium.org
17-Jan-12