static/freebsd/man4/man4.aarch64/rk_grf_gpio.4 3.html


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<table class="head">
  <tr>
    <td class="head-ltitle">RK_GRF_GPIO(4)</td>
    <td class="head-vol">Device Drivers Manual (aarch64)</td>
    <td class="head-rtitle">RK_GRF_GPIO(4)</td>
  </tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">rk_grf_gpio</code> &#x2014;
    <span class="Nd">RockChip GPIO_MUTE pin driver</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="Cd">options SOC_ROCKCHIP_rk3328</code></p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">The <code class="Nm">rk_grf_gpio</code> driver provides a
    single-pin, output-only <a class="Xr">gpio(3)</a> unit whose single pin is
    named GPIO_MUTE. This controls the output of the GPIO_MUTE pin on the
  SoC.</p>
<p class="Pp">This gpio is usually used to control another device on the board,
    so is not usually available for user software.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
<p class="Pp">The <code class="Nm">rk_grf_gpio</code> driver supports the
    following GRF GPIO controller:</p>
<p class="Pp"></p>
<ul class="Bl-bullet Bl-compact">
  <li>rockchip,rk3328-grf-gpio</li>
</ul>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<p class="Pp">The <code class="Nm">rk_grf_gpio</code> driver first appeared in
    <span class="Ux">FreeBSD 15.0</span>.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<p class="Pp">The <code class="Nm">rk_grf_gpio</code> driver and manual were
    written by <span class="An">Stephen Hurd</span>
    &lt;<a class="Mt" href="mailto:shurd@freebsd.org">shurd@freebsd.org</a>&gt;.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">March 18, 2025</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>