Commit df3a388e authored by Artur Weber's avatar Artur Weber Committed by Linus Walleij
Browse files

dt-bindings: pinctrl: Add bindings for BCM21664 pin controller 



Add device tree bindings for the pin controller included in the
BCM21664 chip. The bindings are based off brcm,bcm11351-pinctrl.yaml;
both chips use the same driver, but have different pins, and the
BCM21664 has 6 alt modes instead of 4.

Signed-off-by: default avatarArtur Weber <aweber.kernel@gmail.com>
Reviewed-by: default avatarRob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/20250303-bcm21664-pinctrl-v3-1-5f8b80e4ab51@gmail.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent e97435ab

Documentation/devicetree/bindings/pinctrl/brcm,bcm21664-pinctrl.yaml

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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/pinctrl/brcm,bcm21664-pinctrl.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Broadcom BCM21664 pin controller



maintainers:

  - Florian Fainelli <florian.fainelli@broadcom.com>

  - Ray Jui <rjui@broadcom.com>

  - Scott Branden <sbranden@broadcom.com>



allOf:

  - $ref: pinctrl.yaml#



properties:

  compatible:

    const: brcm,bcm21664-pinctrl



  reg:

    maxItems: 1



patternProperties:

  '-pins$':

    type: object

    additionalProperties: false



    patternProperties:

      '-grp[0-9]$':

        type: object



        properties:

          pins:

            description:

              Specifies the name(s) of one or more pins to be configured by

              this node.

            items:

              enum: [ adcsyn, batrm, bsc1clk, bsc1dat, camcs0, camcs1, clk32k,

                      clk_cx8, dclk1, dclk4, dclkreq1, dclkreq4, dmic0clk,

                      dmic0dq, dsi0te, gpio00, gpio01, gpio02, gpio03, gpio04,

                      gpio05, gpio06, gpio07, gpio08, gpio09, gpio10, gpio11,

                      gpio12, gpio13, gpio14, gpio15, gpio16, gpio17, gpio18,

                      gpio19, gpio20, gpio21, gpio22, gpio23, gpio24, gpio25,

                      gpio26, gpio27, gpio28, gpio32, gpio33, gpio34, gpio93,

                      gpio94, gps_calreq, gps_hostreq, gps_pablank, gps_tmark,

                      icusbdm, icusbdp, lcdcs0, lcdres, lcdscl, lcdsda, lcdte,

                      mdmgpio00, mdmgpio01, mdmgpio02, mdmgpio03, mdmgpio04,

                      mdmgpio05, mdmgpio06, mdmgpio07, mdmgpio08, mmc0ck,

                      mmc0cmd, mmc0dat0, mmc0dat1, mmc0dat2, mmc0dat3, mmc0dat4,

                      mmc0dat5, mmc0dat6, mmc0dat7, mmc0rst, mmc1ck, mmc1cmd,

                      mmc1dat0, mmc1dat1, mmc1dat2, mmc1dat3, mmc1dat4,

                      mmc1dat5, mmc1dat6, mmc1dat7, mmc1rst, pc1, pc2, pmbscclk,

                      pmbscdat, pmuint, resetn, rfst2g_mtsloten3g,

                      rtxdata2g_txdata3g1, rtxen2g_txdata3g2, rxdata3g0,

                      rxdata3g1, rxdata3g2, sdck, sdcmd, sddat0, sddat1, sddat2,

                      sddat3, simclk, simdat, simdet, simrst, spi0clk, spi0fss,

                      spi0rxd, spi0txd, sri_c, sri_d, sri_e, sspck, sspdi,

                      sspdo, sspsyn, stat1, stat2, swclktck, swdiotms, sysclken,

                      tdi, tdo, testmode, traceclk, tracedt00, tracedt01,

                      tracedt02, tracedt03, tracedt04, tracedt05, tracedt06,

                      tracedt07, tracedt08, tracedt09, tracedt10, tracedt11,

                      tracedt12, tracedt13, tracedt14, tracedt15, trstb,

                      txdata3g0, ubctsn, ubrtsn, ubrx, ubtx ]



          function:

            description:

              Specifies the pin mux selection.

            enum: [ alt1, alt2, alt3, alt4, alt5, alt6 ]



          bias-disable: true



          bias-pull-up:

            type: boolean



          bias-pull-down:

            type: boolean



          slew-rate:

            description: |

              Meaning depends on configured pin mux:

                bsc*clk/pmbscclk or bsc*dat/pmbscdat or gpio16/gpio17:

                  0: Standard (100 kbps) & Fast (400 kbps) mode

                  1: Highspeed (3.4 Mbps) mode

                Otherwise:

                  0: fast slew rate

                  1: normal slew rate



          drive-strength:

            enum: [ 2, 4, 6, 8, 10, 12, 14, 16 ]



          input-enable: true

          input-disable: true



          input-schmitt-enable: true

          input-schmitt-disable: true



        required:

          - pins



        additionalProperties: false



        allOf:

          - $ref: pincfg-node.yaml#

          # Limitations for I2C pins

          - if:

              properties:

                pins:

                  contains:

                    enum: [ bsc1clk, bsc1dat, gpio16, gpio17, pmbscclk,

                            pmbscdat ]

            then:

              properties:

                drive-strength: false

                bias-pull-down: false

                input-schmitt-enable: false

                input-schmitt-disable: false





required:

  - compatible

  - reg



unevaluatedProperties: false



examples:

  - |

    pinctrl@35004800 {

      compatible = "brcm,bcm21664-pinctrl";

      reg = <0x35004800 0x7f0>;



      dev-a-active-pins {

        /* group node defining 1 standard pin */

        std-grp0 {

          pins = "gpio00";

          function = "alt1";

          input-schmitt-enable;

          bias-disable;

          slew-rate = <1>;

          drive-strength = <4>;

        };



        /* group node defining 2 I2C pins */

        i2c-grp0 {

          pins = "bsc1clk", "bsc1dat";

          function = "alt2";

          bias-pull-up;

          input-enable;

        };

      };

    };

...