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diff --git a/static/freebsd/man4/man4.arm/imx6_snvs.4 3.html b/static/freebsd/man4/man4.arm/imx6_snvs.4 3.html new file mode 100644 index 00000000..c3763862 --- /dev/null +++ b/static/freebsd/man4/man4.arm/imx6_snvs.4 3.html @@ -0,0 +1,57 @@ +<table class="head"> + <tr> + <td class="head-ltitle">IMX6_SNVS(4)</td> + <td class="head-vol">Device Drivers Manual (arm)</td> + <td class="head-rtitle">IMX6_SNVS(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">imx6_snvs</code> — <span class="Nd">device + driver for the NXP i.MX6 on-chip Realtime Clock</span></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> +<p class="Pp">To compile this driver into the kernel, place the following line + in your kernel configuration file:</p> +<div class="Bd Pp Bd-indent"><code class="Cd">device imx6_snvs</code></div> +<p class="Pp">Alternatively, to load the driver as a module at boot time, place + the following line in <a class="Xr">loader.conf(5)</a>:</p> +<div class="Bd Pp Bd-indent Li"> +<pre>imx6_snvs_load="YES"</pre> +</div> +</section> +<section class="Sh"> +<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> +<p class="Pp">The <code class="Nm">imx6_snvs</code> driver provides support for + the i.MX6 on-chip realtime clock. It provides the time of day with a + resolution of approximately 30 microseconds.</p> +<p class="Pp">‘SNVS’ stands for Secure Non-Volatile Storage, and + refers to the subsystem within the chip that (optionally) remains powered by + a battery when the rest of the system is powered down. The on-chip realtime + clock is part of that subsystem. Other features of the SNVS subsystem are + related to security, tamper monitoring, and power control; the + <code class="Nm">imx6_snvs</code> driver does not currently support those + features.</p> +<p class="Pp">Many i.MX6 systems do not use a battery to provide power to the + SNVS due to its relatively high power draw. In such systems, this driver is + able to provide a very accurate time following a reboot, but cannot provide + time at all if the power is cycled. If the system provides an i2c or other + type of alternate realtime clock with lower resolution, there is value in + configuring both clock drivers. Doing so allows SNVS to provide accurate + time after a reboot, while the external clock provides approximate time + after power cycling.</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">imx6_snvs</code> driver first appeared in + <span class="Ux">FreeBSD 12.0</span>.</p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">July 8, 2018</td> + <td class="foot-os">FreeBSD 15.0</td> + </tr> +</table> |