| Gabriel Huau | 5318f18 | 2015-05-25 22:27:37 -0700 | [diff] [blame] | 1 | Intel x86 PINCTRL/GPIO controller |
| 2 | |
| 3 | Pin-muxing on x86 can be described with a node for the PINCTRL master |
| 4 | node and a set of child nodes for each pin on the SoC. |
| 5 | |
| 6 | The PINCTRL master node requires the following properties: |
| 7 | - compatible : "intel,x86-pinctrl" |
| 8 | |
| 9 | Pin nodes must be children of the pinctrl master node and can |
| 10 | contain the following properties: |
| Simon Glass | c13dcb3 | 2016-03-11 22:07:17 -0700 | [diff] [blame^] | 11 | - pad-offset - (required) offset in the IOBASE for the pin to configure |
| 12 | - gpio-offset - (required) 2 cells |
| 13 | - offset in the GPIOBASE for the pin to configure |
| 14 | - the bit shift in this register (4 = bit 4) |
| 15 | - mode-gpio - (optional) standalone property to force the pin into GPIO mode |
| 16 | - mode-func - (optional) function number to assign to the pin. If |
| 17 | 'mode-gpio' is set, this property will be ignored. |
| Gabriel Huau | 5318f18 | 2015-05-25 22:27:37 -0700 | [diff] [blame] | 18 | in case of 'mode-gpio' property set: |
| Simon Glass | c13dcb3 | 2016-03-11 22:07:17 -0700 | [diff] [blame^] | 19 | - output-value - (optional) this set the default output value of the GPIO |
| 20 | - direction - (optional) this set the direction of the gpio |
| 21 | - pull-str - (optional) this set the pull strength of the pin |
| 22 | - pull-assign - (optional) this set the pull assignement (up/down) of the pin |
| Simon Glass | 7ac99be | 2016-03-11 22:07:13 -0700 | [diff] [blame] | 23 | - invert - (optional) this input pin is inverted |
| Gabriel Huau | 5318f18 | 2015-05-25 22:27:37 -0700 | [diff] [blame] | 24 | |
| 25 | Example: |
| 26 | |
| 27 | pin_usb_host_en0@0 { |
| 28 | gpio-offset = <0x80 8>; |
| 29 | pad-offset = <0x260>; |
| 30 | mode-gpio; |
| 31 | output-value = <1>; |
| 32 | direction = <PIN_OUTPUT>; |
| 33 | }; |