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Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-pinmux.txt')
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diff --git a/Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-pinmux.txt b/Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-pinmux.txt new file mode 100644 index 000000000..85f211436 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-pinmux.txt @@ -0,0 +1,166 @@ +NVIDIA Tegra210 pinmux controller + +Required properties: +- compatible: "nvidia,tegra210-pinmux" +- reg: Should contain a list of base address and size pairs for: + - first entry: The APB_MISC_GP_*_PADCTRL registers (pad control) + - second entry: The PINMUX_AUX_* registers (pinmux) + +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". + +Tegra's 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 pin(s)/group(s), and various pin configuration +parameters, such as pull-up, tristate, drive strength, etc. + +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 or tristate parameter. For this +reason, even seemingly boolean values are actually tristates in this binding: +unspecified, off, or on. Unspecified is represented as an absent property, +and off/on are represented as integer values 0 and 1. + +See the TRM to determine which properties and values apply to each pin/group. +Macro values for property values are defined in +include/dt-binding/pinctrl/pinctrl-tegra.h. + +Required subnode-properties: +- nvidia,pins : An array of strings. Each string contains the name of a pin or + group. Valid values for these names are listed below. + +Optional subnode-properties: +- nvidia,function: A string containing the name of the function to mux to the + pin or group. +- nvidia,pull: Integer, representing the pull-down/up to apply to the pin. + 0: none, 1: down, 2: up. +- nvidia,tristate: Integer. + 0: drive, 1: tristate. +- nvidia,enable-input: Integer. Enable the pin's input path. + enable :TEGRA_PIN_ENABLE and + disable or output only: TEGRA_PIN_DISABLE. +- nvidia,open-drain: Integer. + enable: TEGRA_PIN_ENABLE. + disable: TEGRA_PIN_DISABLE. +- nvidia,lock: Integer. Lock the pin configuration against further changes + until reset. + enable: TEGRA_PIN_ENABLE. + disable: TEGRA_PIN_DISABLE. +- nvidia,io-hv: Integer. Select high-voltage receivers. + normal: TEGRA_PIN_DISABLE + high: TEGRA_PIN_ENABLE +- nvidia,high-speed-mode: Integer. Enable high speed mode the pins. + normal: TEGRA_PIN_DISABLE + high: TEGRA_PIN_ENABLE +- nvidia,schmitt: Integer. Enables Schmitt Trigger on the input. + normal: TEGRA_PIN_DISABLE + high: TEGRA_PIN_ENABLE +- nvidia,drive-type: Integer. Valid range 0...3. +- nvidia,pull-down-strength: Integer. Controls drive strength. 0 is weakest. + The range of valid values depends on the pingroup. See "CAL_DRVDN" in the + Tegra TRM. +- nvidia,pull-up-strength: Integer. Controls drive strength. 0 is weakest. + The range of valid values depends on the pingroup. See "CAL_DRVUP" in the + Tegra TRM. +- nvidia,slew-rate-rising: Integer. Controls rising signal slew rate. 0 is + fastest. The range of valid values depends on the pingroup. See + "DRVDN_SLWR" in the Tegra TRM. +- nvidia,slew-rate-falling: Integer. Controls falling signal slew rate. 0 is + fastest. The range of valid values depends on the pingroup. See + "DRVUP_SLWF" in the Tegra TRM. + +Valid values for pin and group names (nvidia,pin) are: + + Mux groups: + + These correspond to Tegra PINMUX_AUX_* (pinmux) registers. Any property + that exists in those registers may be set for the following pin names. + + In Tegra210, many pins also have a dedicated APB_MISC_GP_*_PADCTRL + register. Where that is true, and property that exists in that register + may also be set on the following pin names. + + als_prox_int_px3, ap_ready_pv5, ap_wake_bt_ph3, ap_wake_nfc_ph7, + aud_mclk_pbb0, batt_bcl, bt_rst_ph4, bt_wake_ap_ph5, button_home_py1, + button_power_on_px5, button_slide_sw_py0, button_vol_down_px7, + button_vol_up_px6, cam1_mclk_ps0, cam1_pwdn_ps7, cam1_strobe_pt1, + cam2_mclk_ps1, cam2_pwdn_pt0, cam_af_en_ps5, cam_flash_en_ps6, + cam_i2c_scl_ps2, cam_i2c_sda_ps3, cam_rst_ps4cam_rst_ps4, clk_32k_in, + clk_32k_out_py5, clk_req, core_pwr_req, cpu_pwr_req, dap1_din_pb1, + dap1_dout_pb2, dap1_fs_pb0, dap1_sclk_pb3, dap2_din_paa2, dap2_dout_paa3, + dap2_fs_paa0, dap2_sclk_paa1, dap4_din_pj5, dap4_dout_pj6, dap4_fs_pj4, + dap4_sclk_pj7, dmic1_clk_pe0, dmic1_dat_pe1, dmic2_clk_pe2, dmic2_dat_pe3, + dmic3_clk_pe4, dmic3_dat_pe5, dp_hpd0_pcc6, dvfs_clk_pbb2, dvfs_pwm_pbb1, + gen1_i2c_scl_pj1, gen1_i2c_sda_pj0, gen2_i2c_scl_pj2, gen2_i2c_sda_pj3, + gen3_i2c_scl_pf0, gen3_i2c_sda_pf1, gpio_x1_aud_pbb3, gpio_x3_aud_pbb4, + gps_en_pi2, gps_rst_pi3, hdmi_cec_pcc0, hdmi_int_dp_hpd_pcc1, jtag_rtck, + lcd_bl_en_pv1, lcd_bl_pwm_pv0, lcd_gpio1_pv3, lcd_gpio2_pv4, lcd_rst_pv2, + lcd_te_py2, modem_wake_ap_px0, motion_int_px2, nfc_en_pi0, nfc_int_pi1, + pa6, pcc7, pe6, pe7, pex_l0_clkreq_n_pa1, pex_l0_rst_n_pa0, + pex_l1_clkreq_n_pa4, pex_l1_rst_n_pa3, pex_wake_n_pa2, ph6, pk0, pk1, pk2, + pk3, pk4, pk5, pk6, pk7, pl0, pl1, pwr_i2c_scl_py3, pwr_i2c_sda_py4, + pwr_int_n, pz0, pz1, pz2, pz3, pz4, pz5, qspi_cs_n_pee1, qspi_io0_pee2, + qspi_io1_pee3, qspi_io2_pee4, qspi_io3_pee5, qspi_sck_pee0, + sata_led_active_pa5, sdmmc1_clk_pm0, sdmmc1_cmd_pm1, sdmmc1_dat0_pm5, + sdmmc1_dat1_pm4, sdmmc1_dat2_pm3, sdmmc1_dat3_pm2, sdmmc3_clk_pp0, + sdmmc3_cmd_pp1, sdmmc3_dat0_pp5, sdmmc3_dat1_pp4, sdmmc3_dat2_pp3, + sdmmc3_dat3_pp2, shutdown, spdif_in_pcc3, spdif_out_pcc2, spi1_cs0_pc3, + spi1_cs1_pc4, spi1_miso_pc1, spi1_mosi_pc0, spi1_sck_pc2, spi2_cs0_pb7, + spi2_cs1_pdd0, spi2_miso_pb5, spi2_mosi_pb4, spi2_sck_pb6, spi4_cs0_pc6, + spi4_miso_pd0, spi4_mosi_pc7, spi4_sck_pc5, temp_alert_px4, touch_clk_pv7, + touch_int_px1, touch_rst_pv6, uart1_cts_pu3, uart1_rts_pu2, uart1_rx_pu1, + uart1_tx_pu0, uart2_cts_pg3, uart2_rts_pg2, uart2_rx_pg1, uart2_tx_pg0, + uart3_cts_pd4, uart3_rts_pd3, uart3_rx_pd2, uart3_tx_pd1, uart4_cts_pi7, + uart4_rts_pi6, uart4_rx_pi5, uart4_tx_pi4, usb_vbus_en0_pcc4, + usb_vbus_en1_pcc5, wifi_en_ph0, wifi_rst_ph1, wifi_wake_ap_ph2 + + Drive groups: + + These correspond to the Tegra APB_MISC_GP_*_PADCTRL (pad control) + registers. Note that where one of these registers controls a single pin + for which a PINMUX_AUX_* exists, see the list above for the pin name to + use when configuring the pinmux. + + pa6, pcc7, pe6, pe7, ph6, pk0, pk1, pk2, pk3, pk4, pk5, pk6, pk7, pl0, pl1, + pz0, pz1, pz2, pz3, pz4, pz5, sdmmc1, sdmmc2, sdmmc3, sdmmc4 + +Valid values for nvidia,functions are: + + aud, bcl, blink, ccla, cec, cldvfs, clk, core, cpu, displaya, displayb, + dmic1, dmic2, dmic3, dp, dtv, extperiph3, i2c1, i2c2, i2c3, i2cpmu, i2cvi, + i2s1, i2s2, i2s3, i2s4a, i2s4b, i2s5a, i2s5b, iqc0, iqc1, jtag, pe, pe0, + pe1, pmi, pwm0, pwm1, pwm2, pwm3, qspi, rsvd0, rsvd1, rsvd2, rsvd3, sata, + sdmmc1, sdmmc3, shutdown, soc, sor0, sor1, spdif, spi1, spi2, spi3, spi4, + sys, touch, uart, uarta, uartb, uartc, uartd, usb, vgp1, vgp2, vgp3, vgp4, + vgp5, vgp6, vimclk, vimclk2 + +Example: + + pinmux: pinmux@70000800 { + compatible = "nvidia,tegra210-pinmux"; + reg = <0x0 0x700008d4 0x0 0x2a8>, /* Pad control registers */ + <0x0 0x70003000 0x0 0x1000>; /* Mux registers */ + + pinctrl-names = "boot"; + pinctrl-0 = <&state_boot>; + + state_boot: pinmux { + gen1_i2c_scl_pj1 { + nvidia,pins = "gen1_i2c_scl_pj1", + nvidia,function = "i2c1"; + nvidia,pull = <TEGRA_PIN_PULL_NONE>; + nvidia,tristate = <TEGRA_PIN_DISABLE>; + nvidia,enable-input = <TEGRA_PIN_ENABLE>; + nvidia,open-drain = <TEGRA_PIN_ENABLE>; + nvidia,io-hv = <TEGRA_PIN_ENABLE>; + }; + }; + }; +}; |