| 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 |
| - gpio-controller: Marks the device node as a GPIO controller. |
| - gpio-ranges: Specifies the mapping between gpio controller and |
| pin-controller pins. |
| - #gpio-cells: Should be two. The first cell is the gpio pin number |
| and the second cell is used for optional parameters. |
| - interrupt-controller: Marks the device node as an interrupt controller. |
| - #interrupt-cells: Specifies the number of cells needed to encode an |
| interrupt. Shall be set to 2. The first cell |
| defines the interrupt number, the second encodes |
| the trigger flags described in |
| bindings/interrupt-controller/interrupts.txt |
| |
| 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. |
| |
| lvds_oxx_uart4_mfp, rmii_mdc_mfp, rmii_mdio_mfp, sirq0_mfp, |
| sirq1_mfp, rmii_txd0_mfp, rmii_txd1_mfp, rmii_txen_mfp, |
| rmii_rxer_mfp, rmii_crs_dv_mfp, rmii_rxd1_mfp, rmii_rxd0_mfp, |
| rmii_ref_clk_mfp, i2s_d0_mfp, i2s_d1_mfp, i2s_lr_m_clk0_mfp, |
| i2s_bclk0_mfp, i2s_bclk1_mclk1_mfp, pcm1_in_out_mfp, |
| pcm1_clk_mfp, pcm1_sync_mfp, eram_a5_mfp, eram_a6_mfp, |
| eram_a7_mfp, eram_a8_mfp, eram_a9_mfp, eram_a10_mfp, |
| eram_a11_mfp, lvds_oep_odn_mfp, lvds_ocp_obn_mfp, |
| lvds_oap_oan_mfp, lvds_e_mfp, spi0_sclk_mosi_mfp, spi0_ss_mfp, |
| spi0_miso_mfp, uart2_rtsb_mfp, uart2_ctsb_mfp, uart3_rtsb_mfp, |
| uart3_ctsb_mfp, sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp, |
| sd1_d0_d3_mfp, sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_clk_mfp, |
| uart0_rx_mfp, nand0_d0_ceb3_mfp, uart0_tx_mfp, i2c0_mfp, |
| csi0_cn_cp_mfp, csi0_dn0_dp3_mfp, csi1_dn0_cp_mfp, |
| dsi_dp3_dn1_mfp, dsi_cp_dn0_mfp, dsi_dp2_dn2_mfp, |
| nand1_d0_ceb1_mfp, nand1_ceb3_mfp, nand1_ceb0_mfp, |
| csi1_dn0_dp0_mfp, uart4_rx_tx_mfp |
| |
| |
| These pin groups are used for selecting the drive strength |
| parameters. |
| |
| sgpio3_drv, sgpio2_drv, sgpio1_drv, sgpio0_drv, |
| rmii_tx_d0_d1_drv, rmii_txen_rxer_drv, rmii_crs_dv_drv, |
| rmii_rx_d1_d0_drv, rmii_ref_clk_drv, rmii_mdc_mdio_drv, |
| sirq_0_1_drv, sirq2_drv, i2s_d0_d1_drv, i2s_lr_m_clk0_drv, |
| i2s_blk1_mclk1_drv, pcm1_in_out_drv, lvds_oap_oan_drv, |
| lvds_oep_odn_drv, lvds_ocp_obn_drv, lvds_e_drv, sd0_d3_d0_drv, |
| sd1_d3_d0_drv, sd0_sd1_cmd_clk_drv, spi0_sclk_mosi_drv, |
| spi0_ss_miso_drv, uart0_rx_tx_drv, uart4_rx_tx_drv, uart2_drv, |
| uart3_drv, i2c0_drv, i2c1_drv, i2c2_drv, sensor0_drv |
| |
| These pin groups are used for selecting the slew rate |
| parameters. |
| |
| sgpio3_sr, sgpio2_sr, sgpio1_sr, sgpio0_sr, rmii_tx_d0_d1_sr, |
| rmii_txen_rxer_sr, rmii_crs_dv_sr, rmii_rx_d1_d0_sr, |
| rmii_ref_clk_sr, rmii_mdc_mdio_sr, sirq_0_1_sr, sirq2_sr, |
| i2s_do_d1_sr, i2s_lr_m_clk0_sr, i2s_bclk0_mclk1_sr, |
| pcm1_in_out_sr, sd1_d3_d0_sr, sd0_sd1_clk_cmd_sr, |
| spi0_sclk_mosi_sr, spi0_ss_miso_sr, uart0_rx_tx_sr, |
| uart4_rx_tx_sr, uart2_sr, uart3_sr, i2c0_sr, i2c1_sr, i2c2_sr, |
| sensor0_sr |
| |
| - 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 configured as |
| pull down. |
| - bias-pull-up: No arguments. The specified pins should be configured 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 in mA. |
| Valid values are: |
| <2> |
| <4> |
| <8> |
| <12> |
| |
| Example: |
| |
| pinctrl: pinctrl@e01b0000 { |
| compatible = "actions,s900-pinctrl"; |
| reg = <0x0 0xe01b0000 0x0 0x1000>; |
| clocks = <&cmu CLK_GPIO>; |
| gpio-controller; |
| gpio-ranges = <&pinctrl 0 0 146>; |
| #gpio-cells = <2>; |
| interrupt-controller; |
| #interrupt-cells = <2>; |
| |
| uart2-default: uart2-default { |
| pinmux { |
| groups = "lvds_oep_odn_mfp"; |
| function = "uart2"; |
| }; |
| pinconf { |
| groups = "lvds_oep_odn_drv"; |
| drive-strength = <12>; |
| }; |
| }; |
| }; |
