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+Actions Semi S900 Pin Controller
+
+This binding describes the pin controller found in the S900 SoC.
+
+Required Properties:
+
+- compatible:   Should be "actions,s900-pinctrl"
+- reg:          Should contain the register base address and size of
+                the pin controller.
+- clocks:       phandle of the clock feeding the pin controller
+
+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".
+
+The 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 group(s), and various pin configuration
+parameters, such as pull-up, drive strength, etc.
+
+PIN CONFIGURATION NODES:
+
+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.
+
+Pinmux functions are available only for the pin groups while pinconf
+parameters are available for both pin groups and individual pins.
+
+The following generic properties as defined in pinctrl-bindings.txt are valid
+to specify in a pin configuration subnode:
+
+Required Properties:
+
+- pins:           An array of strings, each string containing the name of a pin.
+                  These pins are used for selecting the pull control and schmitt
+                  trigger parameters. The following are the list of pins
+                  available:
+
+                  ETH_TXD0, ETH_TXD1, ETH_TXEN, ETH_RXER, ETH_CRS_DV,
+                  ETH_RXD1, ETH_RXD0, ETH_REF_CLK, ETH_MDC, ETH_MDIO,
+                  SIRQ0, SIRQ1, SIRQ2, I2S_D0, I2S_BCLK0, I2S_LRCLK0,
+                  I2S_MCLK0, I2S_D1, I2S_BCLK1, I2S_LRCLK1, I2S_MCLK1,
+                  PCM1_IN, PCM1_CLK, PCM1_SYNC, PCM1_OUT, ERAM_A5,
+                  ERAM_A6, ERAM_A7, ERAM_A8, ERAM_A9, ERAM_A10, ERAM_A11,
+                  LVDS_OEP, LVDS_OEN, LVDS_ODP, LVDS_ODN, LVDS_OCP,
+                  LVDS_OCN, LVDS_OBP, LVDS_OBN, LVDS_OAP, LVDS_OAN,
+                  LVDS_EEP, LVDS_EEN, LVDS_EDP, LVDS_EDN, LVDS_ECP,
+                  LVDS_ECN, LVDS_EBP, LVDS_EBN, LVDS_EAP, LVDS_EAN,
+                  SD0_D0, SD0_D1, SD0_D2, SD0_D3, SD1_D0, SD1_D1,
+                  SD1_D2, SD1_D3, SD0_CMD, SD0_CLK, SD1_CMD, SD1_CLK,
+                  SPI0_SCLK, SPI0_SS, SPI0_MISO, SPI0_MOSI, UART0_RX,
+                  UART0_TX, UART2_RX, UART2_TX, UART2_RTSB, UART2_CTSB,
+                  UART3_RX, UART3_TX, UART3_RTSB, UART3_CTSB, UART4_RX,
+                  UART4_TX, I2C0_SCLK, I2C0_SDATA, I2C1_SCLK, I2C1_SDATA,
+                  I2C2_SCLK, I2C2_SDATA, CSI0_DN0, CSI0_DP0, CSI0_DN1,
+                  CSI0_DP1, CSI0_CN, CSI0_CP, CSI0_DN2, CSI0_DP2, CSI0_DN3,
+                  CSI0_DP3, DSI_DP3, DSI_DN3, DSI_DP1, DSI_DN1, DSI_CP,
+                  DSI_CN, DSI_DP0, DSI_DN0, DSI_DP2, DSI_DN2, SENSOR0_PCLK,
+                  CSI1_DN0,CSI1_DP0,CSI1_DN1, CSI1_DP1, CSI1_CN, CSI1_CP,
+                  SENSOR0_CKOUT, NAND0_D0, NAND0_D1, NAND0_D2, NAND0_D3,
+                  NAND0_D4, NAND0_D5, NAND0_D6, NAND0_D7, NAND0_DQS,
+                  NAND0_DQSN, NAND0_ALE, NAND0_CLE, NAND0_CEB0, NAND0_CEB1,
+                  NAND0_CEB2, NAND0_CEB3, NAND1_D0, NAND1_D1, NAND1_D2,
+                  NAND1_D3, NAND1_D4, NAND1_D5, NAND1_D6, NAND1_D7, NAND1_DQS,
+                  NAND1_DQSN, NAND1_ALE, NAND1_CLE, NAND1_CEB0, NAND1_CEB1,
+                  NAND1_CEB2, NAND1_CEB3, SGPIO0, SGPIO1, SGPIO2, SGPIO3
+
+- groups:         An array of strings, each string containing the name of a pin
+                  group. These pin groups are used for selecting the pinmux
+                  functions. The following are the list of pin groups available:
+
+                  mfp0_22, mfp0_21_20_eth_mdc, mfp0_21_20_eth_mdio,
+                  mfp0_19_sirq0, mfp0_19_sirq1, mfp0_18_16_eth_txd0,
+                  mfp0_18_16_eth_txd1, mfp0_15_13_eth_txen, mfp0_15_13_eth_rxer,
+                  mfp0_12_11, mfp0_10_8_eth_rxd1, mfp0_10_8_eth_rxd0, mfp0_7_6,
+                  mfp0_5_i2s_d0, mfp0_5_i2s_d1, mfp0_4_3, mfp0_2_i2s0,
+                  mfp0_2_i2s1, mfp0_1_0_pcm1_in_out, mfp0_1_0_pcm1_clk,
+                  mfp0_1_0_pcm1_sync, mfp1_31_29_eram_a5, mfp1_31_29_eram_a6,
+                  mfp1_31_29_eram_a7, mfp1_28_26_eram_a8, mfp1_28_26_eram_a9,
+                  mfp1_28_26_eram_a10, mfp1_25_23, mfp1_22_lvds_oep_odn,
+                  mfp1_22_lvds_ocp_obn, mfp1_22_lvds_oap_oan, mfp1_21_lvds_e,
+                  mfp1_5_4, mfp1_3_1_spi0_ss, mfp1_3_1_spi0_miso, mfp2_23,
+                  mfp2_22, mfp2_21, mfp2_20, mfp2_19_17, mfp2_16_14, mfp2_13_11,
+                  mfp2_10_9, mfp2_8_7, mfp2_6_5, mfp2_4_3, mfp2_2_0, mfp3_27,
+                  mfp3_21_19, mfp3_18_16, mfp3_15, mfp3_14, mfp3_13,
+                  mfp3_12_dsi_dp3_dn1, mfp3_12_dsi_cp_dn0, mfp3_12_dsi_dp2_dn2,
+                  mfp3_11, mfp3_10_nand1_ceb3, mfp3_10_nand1_ceb0, mfp3_9,
+                  mfp3_8
+
+                  These pin groups are used for selecting the drive strength
+                  parameters.
+
+                  drv0_31_30, drv0_29_28, drv0_27_26, drv0_25_24, drv0_23_22,
+                  drv0_21_20, drv0_19_18, drv0_17_16, drv0_15_14, drv0_13_12,
+                  drv0_11_10, drv0_9_8, drv0_7_6, drv0_5_4, drv0_3_2, drv0_1_0,
+                  drv1_29_28, drv1_27_26, drv1_25_24, drv1_23_22, drv1_21_20,
+                  drv1_19_18, drv1_17_16, drv1_15_14, drv1_13_12, drv1_11_10,
+                  drv1_9_8, drv1_7_6, drv1_5_4, drv2_31_30, drv2_29_28,
+                  drv2_27_26, drv2_21_20
+
+                  These pin groups are used for selecting the slew rate
+                  parameters.
+
+                  sr0_15, sr0_14, sr0_13, sr0_12, sr0_11, sr0_10, sr0_9, sr0_8,
+                  sr0_7, sr0_6, sr0_5, sr0_4, sr0_3, sr0_2, sr0_1, sr0_0,
+                  sr1_25, sr1_24, sr1_23, sr1_22, sr1_21, sr1_20, sr1_19,
+                  sr1_18, sr2_31, sr2_30, sr2_29, sr2_25
+
+- function:       An array of strings, each string containing the name of the
+                  pinmux functions. These functions can only be selected by
+                  the corresponding pin groups. The following are the list of
+                  pinmux functions available:
+
+                  eram, eth_rmii, eth_smii, spi0, spi1, spi2, spi3, sens0,
+                  uart0, uart1, uart2, uart3, uart4, uart5, uart6, i2s0, i2s1,
+                  pcm0, pcm1, jtag, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, sd0,
+                  sd1, sd2, sd3, i2c0, i2c1, i2c2, i2c3, i2c4, i2c5, lvds,
+                  usb30, usb20, gpu, mipi_csi0, mipi_csi1, mipi_dsi, nand0,
+                  nand1, spdif, sirq0, sirq1, sirq2
+
+Optional Properties:
+
+- bias-bus-hold:  No arguments. The specified pins should retain the previous
+                  state value.
+- bias-high-impedance: No arguments. The specified pins should be configured
+                  as high impedance.
+- bias-pull-down: No arguments. The specified pins should be configued as
+                  pull down.
+- bias-pull-up:   No arguments. The specified pins should be configued as
+                  pull up.
+- input-schmitt-enable: No arguments: Enable schmitt trigger for the specified
+                  pins
+- input-schmitt-disable: No arguments: Disable schmitt trigger for the specified
+                  pins
+- slew-rate:      Integer. Sets slew rate for the specified pins.
+                  Valid values are:
+                  <0>  - Slow
+                  <1>  - Fast
+- drive-strength: Integer. Selects the drive strength for the specified
+                  pins.
+                  Valid values are:
+                  <2>  - mA
+                  <4>  - mA
+                  <8>  - mA
+                  <12> - mA
+
+Example:
+
+          pinctrl: pinctrl@e01b0000 {
+                  compatible = "actions,s900-pinctrl";
+                  reg = <0x0 0xe01b0000 0x0 0x1000>;
+                  clocks = <&cmu CLK_GPIO>;
+
+                  uart2-default: uart2-default {
+                          pinmux {
+                                  groups = "mfp1_22_lvds_oep_odn";
+                                  function = "uart2";
+                          };
+                          pinconf {
+                                  groups = "drv1_27_26";
+                                  drive-strength = <12>;
+                          };
+                  };
+          };
