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Diffstat (limited to 'dts/Bindings/pinctrl/img,tz1090-pdc-pinctrl.txt')
| -rw-r--r-- | dts/Bindings/pinctrl/img,tz1090-pdc-pinctrl.txt | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/dts/Bindings/pinctrl/img,tz1090-pdc-pinctrl.txt b/dts/Bindings/pinctrl/img,tz1090-pdc-pinctrl.txt deleted file mode 100644 index cf9ccdff44..0000000000 --- a/dts/Bindings/pinctrl/img,tz1090-pdc-pinctrl.txt +++ /dev/null @@ -1,127 +0,0 @@ -ImgTec TZ1090 PDC pin controller - -Required properties: -- compatible: "img,tz1090-pdc-pinctrl" -- reg: Should contain the register physical address and length of the - SOC_GPIO_CONTROL registers in the PDC register region. - -Please refer to pinctrl-bindings.txt in this directory for details of the -common pinctrl bindings used by client devices, including the meaning of the -phrase "pin configuration node". - -TZ1090-PDC's pin configuration nodes act as a container for an arbitrary number -of subnodes. Each of these subnodes represents some desired configuration for a -pin, a group, or a list of pins or groups. This configuration can include the -mux function to select on those pin(s)/group(s), and various pin configuration -parameters, such as pull-up, drive strength, etc. - -The name of each subnode is not important; all subnodes should be enumerated -and processed purely based on their content. - -Each subnode only affects those parameters that are explicitly listed. In -other words, a subnode that lists a mux function but no pin configuration -parameters implies no information about any pin configuration parameters. -Similarly, a pin subnode that describes a pullup parameter implies no -information about e.g. the mux function. For this reason, even seemingly boolean -values are actually tristates in this binding: unspecified, off, or on. -Unspecified is represented as an absent property, and off/on are represented as -integer values 0 and 1. - -Required subnode-properties: -- tz1090,pins : An array of strings. Each string contains the name of a pin or - group. Valid values for these names are listed below. - -Optional subnode-properties: -- tz1090,function: A string containing the name of the function to mux to the - pin or group. Valid values for function names are listed below, including - which pingroups can be muxed to them. -- supported generic pinconfig properties (for further details see - Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt): - - bias-disable - - bias-high-impedance - - bias-bus-hold - - bias-pull-up - - bias-pull-down - - input-schmitt-enable - - input-schmitt-disable - - drive-strength: Integer, control drive strength of pins in mA. - 2: 2mA - 4: 4mA - 8: 8mA - 12: 12mA - - low-power-enable: Flag, power-on-start weak pull-down for invalid power. - - low-power-disable: Flag, power-on-start weak pull-down disabled. - -Note that many of these properties are only valid for certain specific pins -or groups. See the TZ1090 TRM for complete details regarding which groups -support which functionality. The Linux pinctrl driver may also be a useful -reference. - -Valid values for pin and group names are: - - pins: - - These all support bias-high-impediance, bias-pull-up, bias-pull-down, and - bias-bus-hold (which can also be provided to any of the groups below to set - it for all gpio pins in that group). - - gpio0, gpio1, sys_wake0, sys_wake1, sys_wake2, ir_data, ext_power. - - mux groups: - - These all support function. - - gpio0 - pins: gpio0. - function: ir_mod_stable_out. - gpio1 - pins: gpio1. - function: ir_mod_power_out. - - drive groups: - - These support input-schmitt-enable, input-schmitt-disable, - drive-strength, low-power-enable, and low-power-disable. - - pdc - pins: gpio0, gpio1, sys_wake0, sys_wake1, sys_wake2, ir_data, - ext_power. - -Example: - - pinctrl_pdc: pinctrl@2006500 { - #gpio-range-cells = <3>; - compatible = "img,tz1090-pdc-pinctrl"; - reg = <0x02006500 0x100>; - }; - -Example board file extracts: - - &pinctrl_pdc { - pinctrl-names = "default"; - pinctrl-0 = <&syswake_default>; - - syswake_default: syswakes { - syswake_cfg { - tz1090,pins = "sys_wake0", - "sys_wake1", - "sys_wake2"; - pull-up; - }; - }; - irmod_default: irmod { - gpio0_cfg { - tz1090,pins = "gpio0"; - tz1090,function = "ir_mod_stable_out"; - }; - gpio1_cfg { - tz1090,pins = "gpio1"; - tz1090,function = "ir_mod_power_out"; - }; - }; - }; - - ir: ir@2006200 { - pinctrl-names = "default"; - pinctrl-0 = <&irmod_default>; - }; |