projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 34ae6999 AJ |
1 | ============================= |
| 2 | Aspeed AST2400 Pin Controller | |
| 3 | ============================= | |
| 4 | ||
| 5 | Required properties for the AST2400: | |
| 6 | - compatible : Should be one of the following: | |
| 7 | "aspeed,ast2400-pinctrl" | |
| 8 | "aspeed,g4-pinctrl" | |
| 9 | ||
| 10 | The pin controller node should be the child of a syscon node with the required | |
| 11 | property: | |
| 12 | ||
| 13 | - compatible : Should be one of the following: | |
| 14 | "aspeed,ast2400-scu", "syscon", "simple-mfd" | |
| 15 | "aspeed,g4-scu", "syscon", "simple-mfd" | |
| 16 | ||
| 17 | Refer to the the bindings described in | |
| 18 | Documentation/devicetree/bindings/mfd/syscon.txt | |
| 19 | ||
| 20 | Subnode Format | |
| 21 | ============== | |
| 22 | ||
| 23 | The required properties of pinmux child nodes are: | |
| 24 | - function: the mux function to select | |
| 25 | - groups : the list of groups to select with this function | |
| 26 | ||
| 27 | Required properties of pinconf child nodes are: | |
| 28 | - groups: A list of groups to select (either this or "pins" must be | |
| 29 | specified) | |
| 30 | - pins : A list of ball names as strings, eg "D14" (either this or "groups" | |
| 31 | must be specified) | |
| 32 | ||
| 33 | Optional properties of pinconf child nodes are: | |
| 34 | - bias-disable : disable any pin bias | |
| 35 | - bias-pull-down: pull down the pin | |
| 36 | - drive-strength: sink or source at most X mA | |
| 37 | ||
| 38 | Definitions are as specified in | |
| 39 | Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt, with any | |
| 40 | further limitations as described above. | |
| 41 | ||
| 42 | For pinmux, each mux function has only one associated pin group. Each group is | |
| 43 | named by its function. The following values for the function and groups | |
| 44 | properties are supported: | |
| 45 | ||
| 46 | ACPI ADC0 ADC1 ADC10 ADC11 ADC12 ADC13 ADC14 ADC15 ADC2 ADC3 ADC4 ADC5 ADC6 | |
| 47 | ADC7 ADC8 ADC9 BMCINT DDCCLK DDCDAT EXTRST FLACK FLBUSY FLWP GPID GPID0 GPID2 | |
| 48 | GPID4 GPID6 GPIE0 GPIE2 GPIE4 GPIE6 I2C10 I2C11 I2C12 I2C13 I2C14 I2C3 I2C4 | |
| 49 | I2C5 I2C6 I2C7 I2C8 I2C9 LPCPD LPCPME LPCRST LPCSMI MAC1LINK MAC2LINK MDIO1 | |
| 50 | MDIO2 NCTS1 NCTS2 NCTS3 NCTS4 NDCD1 NDCD2 NDCD3 NDCD4 NDSR1 NDSR2 NDSR3 NDSR4 | |
| 51 | NDTR1 NDTR2 NDTR3 NDTR4 NDTS4 NRI1 NRI2 NRI3 NRI4 NRTS1 NRTS2 NRTS3 OSCCLK PWM0 | |
| 52 | PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7 RGMII1 RGMII2 RMII1 RMII2 ROM16 ROM8 ROMCS1 | |
| 53 | ROMCS2 ROMCS3 ROMCS4 RXD1 RXD2 RXD3 RXD4 SALT1 SALT2 SALT3 SALT4 SD1 SD2 SGPMCK | |
| 54 | SGPMI SGPMLD SGPMO SGPSCK SGPSI0 SGPSI1 SGPSLD SIOONCTRL SIOPBI SIOPBO SIOPWREQ | |
| 55 | SIOPWRGD SIOS3 SIOS5 SIOSCI SPI1 SPI1DEBUG SPI1PASSTHRU SPICS1 TIMER3 TIMER4 | |
| 56 | TIMER5 TIMER6 TIMER7 TIMER8 TXD1 TXD2 TXD3 TXD4 UART6 USB11D1 USB11H2 USB2D1 | |
| 57 | USB2H1 USBCKI VGABIOS_ROM VGAHS VGAVS VPI18 VPI24 VPI30 VPO12 VPO24 WDTRST1 | |
| 58 | WDTRST2 | |
| 59 | ||
| 60 | Example | |
| 61 | ======= | |
| 62 | ||
| 63 | syscon: scu@1e6e2000 { | |
| 64 | compatible = "aspeed,ast2400-scu", "syscon", "simple-mfd"; | |
| 65 | reg = <0x1e6e2000 0x1a8>; | |
| 66 | ||
| 67 | pinctrl: pinctrl { | |
| 68 | compatible = "aspeed,g4-pinctrl"; | |
| 69 | ||
| 70 | pinctrl_i2c3_default: i2c3_default { | |
| 71 | function = "I2C3"; | |
| 72 | groups = "I2C3"; | |
| 73 | }; | |
| 74 | ||
| 75 | pinctrl_gpioh0_unbiased_default: gpioh0 { | |
| 76 | pins = "A8"; | |
| 77 | bias-disable; | |
| 78 | }; | |
| 79 | }; | |
| 80 | }; |