bindings/pinctrl/sprd%2Cpinctrl.txt

5 The first block comprises some global control registers, and each
8 pad driving level, system control select and so on ("domain pad
11 select 3.0v, then the pin can output 3.0v. "system control" is used
12 to choose one function (like: UART0) for which system, since we
16 of them, so we can not make every Spreadtrum-special configuration
18 global configuration in future. Then we add one "sprd,control" to
19 set these various global control configuration, and we need use
23 bits in one global control register as one pin, thus we should
32 Now we have 4 systems for sleep mode on SC9860 SoC: AP system,
33 PUBCP system, TGLDSP system and AGDSP system. And the pin sleep
35 - input-enable
36 - input-disable
37 - output-high
38 - output-low
39 - bias-pull-up
40 - bias-pull-down
44 by hardware when the system specified by sleep mode goes into deep
46 and set the pin sleep related configuration as "input-enable", which
47 means when PUBCP system goes into deep sleep mode, this pin will be set
51 PUBCP system) do not run linux kernel OS (only AP system run linux
53 when the PUBCP system goes into deep sleep mode. Thus we introduce
54 "sprd,sleep-mode" property to set pin sleep mode.
62 - compatible: "sprd,<soc>-pinctrl"
63   Please refer to each sprd,<soc>-pinctrl.txt binding doc for supported SoCs.
64 - reg: The register address of pin controller device.
65 - pins : An array of pin names.
68 - function: Specified the function name.
69 - drive-strength: Drive strength in mA.
70 - input-schmitt-disable: Enable schmitt-trigger mode.
71 - input-schmitt-enable: Disable schmitt-trigger mode.
72 - bias-disable: Disable pin bias.
73 - bias-pull-down: Pull down on pin.
74 - bias-pull-up: Pull up on pin.
75 - input-enable: Enable pin input.
76 - input-disable: Enable pin output.
77 - output-high: Set the pin as an output level high.
78 - output-low: Set the pin as an output level low.
79 - sleep-hardware-state: Indicate these configs in this state are sleep related.
80 - sprd,control: Control values referring to databook for global control pins.
81 - sprd,sleep-mode: Sleep mode selection.
83 Please refer to each sprd,<soc>-pinctrl.txt binding doc for supported values.