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-<table class="head">
- <tr>
- <td class="head-ltitle">TPS65217PMIC(4)</td>
- <td class="head-vol">Device Drivers Manual</td>
- <td class="head-rtitle">TPS65217PMIC(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">tps65217pmic</code> &#x2014;
- <span class="Nd">Texas Instruments TPS65217 Power Management IC
- 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">tps65217pmic0 at iic? addr 0x24</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">tps65217pmic</code> driver provides minimal
- support for the TPS65217 chip and allows reporting regulated voltages
- through the <a class="Xr">envsys(4)</a> API.</p>
-<p class="Pp">The TPS65217 consists of low-dropout regulators (LDO) and
- step-down converters with integrated switching FETs (DCDC):</p>
-<ul class="Bl-bullet Bl-compact">
- <li>LDO1: 1.0V - 3.3V</li>
- <li>LDO2: 0.9V - 3.3V</li>
- <li>LDO3: 1.5V - 3.3V</li>
- <li>LDO4: 1.5V - 3.3V</li>
- <li>DCDC1: 0.9V - 1.8V</li>
- <li>DCDC2: 0.9V - 3.3V</li>
- <li>DCDC1: 0.9V - 1.5V</li>
-</ul>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">envsys(4)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-<p class="Pp">The <code class="Nm">tps65217pmic</code> device first appeared in
- <span class="Ux">NetBSD 7.0</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">tps65217pmic</code> driver was written by
- <span class="An">Radoslaw Kujawa</span>
- &lt;<a class="Mt" href="mailto:radoslaw.kujawa@gmail.com">radoslaw.kujawa@gmail.com</a>&gt;.
- Voltage change callback for AM335x was added by <span class="An">Manuel
- Bouyer</span>. White LED (backlight) support was added by
- <span class="An">KIYOHARA Takashi</span>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="CAVEATS"><a class="permalink" href="#CAVEATS">CAVEATS</a></h1>
-<p class="Pp">The driver can only report current voltage regulator settings. It
- can not measure the real voltage, as the TPS65217 chip lacks hardware to do
- that. Some boards allow voltage measurement by connecting the power output
- to external sensor, or analog input of the MPU, but this is outside of the
- scope of this driver.</p>
-<p class="Pp">Modifying voltage regulator parameters from user space was
- deliberately left unimplemented, as these parameters should only be set at
- the firmware or kernel level. Setting wrong parameters may result in
- permanent hardware damage.</p>
-<p class="Pp">The <code class="Nm">tps65217pmic</code> driver offers a function
- that can be used to change the voltage from other kernel components
- (currently used by AM335x support code).</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1>
-<p class="Pp">Battery and interrupt support is not implemented.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">June 28, 2018</td>
- <td class="foot-os">NetBSD 10.1</td>
- </tr>
-</table>