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-======================
-Aspeed Pin Controllers
-======================
-
-The Aspeed SoCs vary in functionality inside a generation but have a common mux
-device register layout.
-
-Required properties for g4:
-- compatible : Should be one of the following:
- "aspeed,ast2400-pinctrl"
- "aspeed,g4-pinctrl"
-
-Required properties for g5:
-- compatible : Should be one of the following:
- "aspeed,ast2500-pinctrl"
- "aspeed,g5-pinctrl"
-
-- aspeed,external-nodes: A cell of phandles to external controller nodes:
- 0: compatible with "aspeed,ast2500-gfx", "syscon"
- 1: compatible with "aspeed,ast2500-lhc", "syscon"
-
-The pin controller node should be the child of a syscon node with the required
-property:
-
-- compatible : Should be one of the following:
- "aspeed,ast2400-scu", "syscon", "simple-mfd"
- "aspeed,g4-scu", "syscon", "simple-mfd"
- "aspeed,ast2500-scu", "syscon", "simple-mfd"
- "aspeed,g5-scu", "syscon", "simple-mfd"
-
-Refer to the the bindings described in
-Documentation/devicetree/bindings/mfd/syscon.txt
-
-Subnode Format
-==============
-
-The required properties of pinmux child nodes are:
-- function: the mux function to select
-- groups : the list of groups to select with this function
-
-Required properties of pinconf child nodes are:
-- groups: A list of groups to select (either this or "pins" must be
- specified)
-- pins : A list of ball names as strings, eg "D14" (either this or "groups"
- must be specified)
-
-Optional properties of pinconf child nodes are:
-- bias-disable : disable any pin bias
-- bias-pull-down: pull down the pin
-- drive-strength: sink or source at most X mA
-
-Definitions are as specified in
-Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt, with any
-further limitations as described above.
-
-For pinmux, each mux function has only one associated pin group. Each group is
-named by its function. The following values for the function and groups
-properties are supported:
-
-aspeed,ast2400-pinctrl, aspeed,g4-pinctrl:
-
-ACPI ADC0 ADC1 ADC10 ADC11 ADC12 ADC13 ADC14 ADC15 ADC2 ADC3 ADC4 ADC5 ADC6
-ADC7 ADC8 ADC9 BMCINT DDCCLK DDCDAT EXTRST FLACK FLBUSY FLWP GPID GPID0 GPID2
-GPID4 GPID6 GPIE0 GPIE2 GPIE4 GPIE6 I2C10 I2C11 I2C12 I2C13 I2C14 I2C3 I2C4
-I2C5 I2C6 I2C7 I2C8 I2C9 LPCPD LPCPME LPCRST LPCSMI MAC1LINK MAC2LINK MDIO1
-MDIO2 NCTS1 NCTS2 NCTS3 NCTS4 NDCD1 NDCD2 NDCD3 NDCD4 NDSR1 NDSR2 NDSR3 NDSR4
-NDTR1 NDTR2 NDTR3 NDTR4 NDTS4 NRI1 NRI2 NRI3 NRI4 NRTS1 NRTS2 NRTS3 OSCCLK PWM0
-PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7 RGMII1 RGMII2 RMII1 RMII2 ROM16 ROM8 ROMCS1
-ROMCS2 ROMCS3 ROMCS4 RXD1 RXD2 RXD3 RXD4 SALT1 SALT2 SALT3 SALT4 SD1 SD2 SGPMCK
-SGPMI SGPMLD SGPMO SGPSCK SGPSI0 SGPSI1 SGPSLD SIOONCTRL SIOPBI SIOPBO SIOPWREQ
-SIOPWRGD SIOS3 SIOS5 SIOSCI SPI1 SPI1DEBUG SPI1PASSTHRU SPICS1 TIMER3 TIMER4
-TIMER5 TIMER6 TIMER7 TIMER8 TXD1 TXD2 TXD3 TXD4 UART6 USB11D1 USB11H2 USB2D1
-USB2H1 USBCKI VGABIOS_ROM VGAHS VGAVS VPI18 VPI24 VPI30 VPO12 VPO24 WDTRST1
-WDTRST2
-
-aspeed,ast2500-pinctrl, aspeed,g5-pinctrl:
-
-ACPI ADC0 ADC1 ADC10 ADC11 ADC12 ADC13 ADC14 ADC15 ADC2 ADC3 ADC4 ADC5 ADC6
-ADC7 ADC8 ADC9 BMCINT DDCCLK DDCDAT ESPI FWSPICS1 FWSPICS2 GPID0 GPID2 GPID4
-GPID6 GPIE0 GPIE2 GPIE4 GPIE6 I2C10 I2C11 I2C12 I2C13 I2C14 I2C3 I2C4 I2C5 I2C6
-I2C7 I2C8 I2C9 LAD0 LAD1 LAD2 LAD3 LCLK LFRAME LPCHC LPCPD LPCPLUS LPCPME
-LPCRST LPCSMI LSIRQ MAC1LINK MAC2LINK MDIO1 MDIO2 NCTS1 NCTS2 NCTS3 NCTS4 NDCD1
-NDCD2 NDCD3 NDCD4 NDSR1 NDSR2 NDSR3 NDSR4 NDTR1 NDTR2 NDTR3 NDTR4 NRI1 NRI2
-NRI3 NRI4 NRTS1 NRTS2 NRTS3 NRTS4 OSCCLK PEWAKE PNOR PWM0 PWM1 PWM2 PWM3 PWM4
-PWM5 PWM6 PWM7 RGMII1 RGMII2 RMII1 RMII2 RXD1 RXD2 RXD3 RXD4 SALT1 SALT10
-SALT11 SALT12 SALT13 SALT14 SALT2 SALT3 SALT4 SALT5 SALT6 SALT7 SALT8 SALT9
-SCL1 SCL2 SD1 SD2 SDA1 SDA2 SGPS1 SGPS2 SIOONCTRL SIOPBI SIOPBO SIOPWREQ
-SIOPWRGD SIOS3 SIOS5 SIOSCI SPI1 SPI1CS1 SPI1DEBUG SPI1PASSTHRU SPI2CK SPI2CS0
-SPI2CS1 SPI2MISO SPI2MOSI TIMER3 TIMER4 TIMER5 TIMER6 TIMER7 TIMER8 TXD1 TXD2
-TXD3 TXD4 UART6 USB11BHID USB2AD USB2AH USB2BD USB2BH USBCKI VGABIOSROM VGAHS
-VGAVS VPI24 VPO WDTRST1 WDTRST2
-
-Examples
-========
-
-g4 Example
-----------
-
-syscon: scu@1e6e2000 {
- compatible = "aspeed,ast2400-scu", "syscon", "simple-mfd";
- reg = <0x1e6e2000 0x1a8>;
-
- pinctrl: pinctrl {
- compatible = "aspeed,g4-pinctrl";
-
- pinctrl_i2c3_default: i2c3_default {
- function = "I2C3";
- groups = "I2C3";
- };
-
- pinctrl_gpioh0_unbiased_default: gpioh0 {
- pins = "A8";
- bias-disable;
- };
- };
-};
-
-g5 Example
-----------
-
-ahb {
- apb {
- syscon: scu@1e6e2000 {
- compatible = "aspeed,ast2500-scu", "syscon", "simple-mfd";
- reg = <0x1e6e2000 0x1a8>;
-
- pinctrl: pinctrl {
- compatible = "aspeed,g5-pinctrl";
- aspeed,external-nodes = <&gfx &lhc>;
-
- pinctrl_i2c3_default: i2c3_default {
- function = "I2C3";
- groups = "I2C3";
- };
-
- pinctrl_gpioh0_unbiased_default: gpioh0 {
- pins = "A18";
- bias-disable;
- };
- };
- };
-
- gfx: display@1e6e6000 {
- compatible = "aspeed,ast2500-gfx", "syscon";
- reg = <0x1e6e6000 0x1000>;
- };
- };
-
- lpc: lpc@1e789000 {
- compatible = "aspeed,ast2500-lpc", "simple-mfd";
- reg = <0x1e789000 0x1000>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x1e789000 0x1000>;
-
- lpc_host: lpc-host@80 {
- compatible = "aspeed,ast2500-lpc-host", "simple-mfd", "syscon";
- reg = <0x80 0x1e0>;
- reg-io-width = <4>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0x0 0x80 0x1e0>;
-
- lhc: lhc@20 {
- compatible = "aspeed,ast2500-lhc";
- reg = <0x20 0x24 0x48 0x8>;
- };
- };
- };
-};