FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pinctrl/qcom,msm8976-pinctrl.txt

     Qualcomm MSM8976 TLMM block
     
     This binding describes the Top Level Mode Multiplexer block found in the
     MSM8956 and MSM8976 platforms.
     
     - compatible:
             Usage: required
             Value type: <string>
             Definition: must be "qcom,msm8976-pinctrl"
    
    - reg:
            Usage: required
            Value type: <prop-encoded-array>
            Definition: the base address and size of the TLMM register space.
    
    - interrupts:
            Usage: required
            Value type: <prop-encoded-array>
            Definition: should specify the TLMM summary IRQ.
    
    - interrupt-controller:
            Usage: required
            Value type: <none>
            Definition: identifies this node as an interrupt controller
    
    - #interrupt-cells:
            Usage: required
            Value type: <u32>
            Definition: must be 2. Specifying the pin number and flags, as defined
                        in <dt-bindings/interrupt-controller/irq.h>
    
    - gpio-controller:
            Usage: required
            Value type: <none>
            Definition: identifies this node as a gpio controller
    
    - #gpio-cells:
            Usage: required
            Value type: <u32>
            Definition: must be 2. Specifying the pin number and flags, as defined
                        in <dt-bindings/gpio/gpio.h>
    
    - gpio-ranges:
            Usage: required
            Definition:  see ../gpio/gpio.txt
    
    - gpio-reserved-ranges:
            Usage: optional
            Definition: see ../gpio/gpio.txt
    
    Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
    a general description of GPIO and interrupt bindings.
    
    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 pin(s)/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.
    
    
    The following generic properties as defined in pinctrl-bindings.txt are valid
    to specify in a pin configuration subnode:
    
    - pins:
            Usage: required
            Value type: <string-array>
            Definition: List of gpio pins affected by the properties specified in
                        this subnode.
    
                        Valid pins are:
                          gpio0-gpio145
                            Supports mux, bias and drive-strength
    
                          sdc1_clk, sdc1_cmd, sdc1_data,
                          sdc2_clk, sdc2_cmd, sdc2_data,
                          sdc3_clk, sdc3_cmd, sdc3_data
                            Supports bias and drive-strength
    
    - function:
            Usage: required
            Value type: <string>
            Definition: Specify the alternative function to be configured for the
                        specified pins. Functions are only valid for gpio pins.
                       Valid values are:
   
                       gpio, blsp_uart1, blsp_spi1, smb_int, blsp_i2c1, blsp_spi2,
                       blsp_uart2, blsp_i2c2, gcc_gp1_clk_b, blsp_spi3,
                       qdss_tracedata_b, blsp_i2c3, gcc_gp2_clk_b, gcc_gp3_clk_b,
                       blsp_spi4, cap_int, blsp_i2c4, blsp_spi5, blsp_uart5,
                       qdss_traceclk_a, m_voc, blsp_i2c5, qdss_tracectl_a,
                       qdss_tracedata_a, blsp_spi6, blsp_uart6, qdss_tracectl_b,
                       blsp_i2c6, qdss_traceclk_b, mdp_vsync, pri_mi2s_mclk_a,
                       sec_mi2s_mclk_a, cam_mclk, cci0_i2c, cci1_i2c, blsp1_spi,
                       blsp3_spi, gcc_gp1_clk_a, gcc_gp2_clk_a, gcc_gp3_clk_a,
                       uim_batt, sd_write, uim1_data, uim1_clk, uim1_reset,
                       uim1_present, uim2_data, uim2_clk, uim2_reset,
                       uim2_present, ts_xvdd, mipi_dsi0, us_euro, ts_resout,
                       ts_sample, sec_mi2s_mclk_b, pri_mi2s, codec_reset,
                       cdc_pdm0, us_emitter, pri_mi2s_mclk_b, pri_mi2s_mclk_c,
                       lpass_slimbus, lpass_slimbus0, lpass_slimbus1, codec_int1,
                       codec_int2, wcss_bt, sdc3, wcss_wlan2, wcss_wlan1,
                       wcss_wlan0, wcss_wlan, wcss_fm, key_volp, key_snapshot,
                       key_focus, key_home, pwr_down, dmic0_clk, hdmi_int,
                       dmic0_data, wsa_vi, wsa_en, blsp_spi8, wsa_irq, blsp_i2c8,
                       pa_indicator, modem_tsync, ssbi_wtr1, gsm1_tx, gsm0_tx,
                       sdcard_det, sec_mi2s, ss_switch,
   
   - bias-disable:
           Usage: optional
           Value type: <none>
           Definition: The specified pins should be configured as no pull.
   
   - bias-pull-down:
           Usage: optional
           Value type: <none>
           Definition: The specified pins should be configured as pull down.
   
   - bias-pull-up:
           Usage: optional
           Value type: <none>
           Definition: The specified pins should be configured as pull up.
   
   - output-high:
           Usage: optional
           Value type: <none>
           Definition: The specified pins are configured in output mode, driven
                       high.
                       Not valid for sdc pins.
   
   - output-low:
           Usage: optional
           Value type: <none>
           Definition: The specified pins are configured in output mode, driven
                       low.
                       Not valid for sdc pins.
   
   - drive-strength:
           Usage: optional
           Value type: <u32>
           Definition: Selects the drive strength for the specified pins, in mA.
                       Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16
   
   Example:
   
           tlmm: pinctrl@1000000 {
                   compatible = "qcom,msm8976-pinctrl";
                   reg = <0x1000000 0x300000>;
                   interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
                   gpio-controller;
                   #gpio-cells = <2>;
                   gpio-ranges = <&tlmm 0 0 145>;
                   interrupt-controller;
                   #interrupt-cells = <2>;
   
                   blsp1_uart2_active: blsp1_uart2_active {
                           mux {
                                   pins = "gpio4", "gpio5", "gpio6", "gpio7";
                                   function = "blsp_uart2";
                           };
   
                           config {
                                   pins = "gpio4", "gpio5", "gpio6", "gpio7";
                                   drive-strength = <2>;
                                   bias-disable;
                           };
                   };
           };

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