| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | Broadcom NSP (Northstar plus) IOMUX Controller |
| 2 | |
| 3 | The NSP IOMUX controller supports group based mux configuration. In |
| 4 | addition, certain pins can be muxed to GPIO function individually. |
| 5 | |
| 6 | Required properties: |
| 7 | - compatible: |
| 8 | Must be "brcm,nsp-pinmux" |
| 9 | |
| 10 | - reg: |
| 11 | Should contain the register physical address and length for each of |
| 12 | GPIO_CONTROL0, GP_AUX_SEL and IPROC_CONFIG IOMUX registers |
| 13 | |
| 14 | Properties in subnodes: |
| 15 | - function: |
| 16 | The mux function to select |
| 17 | |
| 18 | - groups: |
| 19 | The list of groups to select with a given function |
| 20 | |
| 21 | For more details, refer to |
| 22 | Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt |
| 23 | |
| 24 | For example: |
| 25 | |
| 26 | pinmux: pinmux@1803f1c0 { |
| 27 | compatible = "brcm,nsp-pinmux"; |
| 28 | reg = <0x1803f1c0 0x04>, |
| 29 | <0x18030028 0x04>, |
| 30 | <0x1803f408 0x04>; |
| 31 | |
| 32 | pinctrl-names = "default"; |
| 33 | pinctrl-0 = <&pwm>, <&gpio_b>, <&nand_sel>; |
| 34 | |
| 35 | pwm: pwm { |
| 36 | function = "pwm"; |
| 37 | groups = "pwm0_grp", "pwm1_grp"; |
| 38 | }; |
| 39 | |
| 40 | gpio_b: gpio_b { |
| 41 | function = "gpio_b"; |
| 42 | groups = "gpio_b_0_grp", "gpio_b_1_grp"; |
| 43 | }; |
| 44 | |
| 45 | nand_sel: nand_sel { |
| 46 | function = "nand"; |
| 47 | groups = "nand_grp"; |
| 48 | }; |
| 49 | }; |
| 50 | |
| 51 | List of supported functions and groups in Northstar Plus: |
| 52 | |
| 53 | "spi": "spi_grp" |
| 54 | |
| 55 | "i2c": "i2c_grp" |
| 56 | |
| 57 | "mdio": "mdio_grp" |
| 58 | |
| 59 | "pwm": "pwm0_grp", "pwm1_grp", "pwm2_grp", "pwm3_grp" |
| 60 | |
| 61 | "gpio_b": "gpio_b_0_grp", "gpio_b_1_grp", "gpio_b_2_grp", "gpio_b_3_grp" |
| 62 | |
| 63 | "uart1": "uart1_grp" |
| 64 | |
| 65 | "uart2": "uart2_grp" |
| 66 | |
| 67 | "synce": "synce_grp" |
| 68 | |
| 69 | "sata_led_grps": "sata0_led_grp", "sata1_led_grp" |
| 70 | |
| 71 | "xtal_out": "xtal_out_grp" |
| 72 | |
| 73 | "sdio": "sdio_pwr_grp", "sdio_1p8v_grp" |
| 74 | |
| 75 | "switch_led": "switch_p05_led0_grp", "switch_p05_led1_grp" |
| 76 | |
| 77 | "nand": "nand_grp" |
| 78 | |
| 79 | "emmc": "emmc_grp" |