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diff --git a/static/freebsd/man4/man4.arm/am335x_dmtpps.4 3.html b/static/freebsd/man4/man4.arm/am335x_dmtpps.4 3.html deleted file mode 100644 index 3873fce7..00000000 --- a/static/freebsd/man4/man4.arm/am335x_dmtpps.4 3.html +++ /dev/null @@ -1,133 +0,0 @@ -<table class="head"> - <tr> - <td class="head-ltitle">AM335X_DMTPPS(4)</td> - <td class="head-vol">Device Drivers Manual (arm)</td> - <td class="head-rtitle">AM335X_DMTPPS(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">am335x_dmtpps</code> — - <span class="Nd">RFC 2783 Pulse Per Second API driver for AM335x - systems</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">device am335x_dmtpps</code></p> -<p class="Pp">Optional in <span class="Pa">/boot/loader.conf</span>: - <br/> - <code class="Cd">hw.am335x_dmtpps.input="pin name"</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">am335x_dmtpps</code> device driver provides a - system time counter that includes precise capture of Pulse Per Second (PPS) - signals emitted by GPS receivers and other timing devices. The - <code class="Nm">am335x_dmtpps</code> driver may be compiled into the kernel - or loaded as a module.</p> -<p class="Pp">The AM335x timer hardware captures the value of the system time - counter on the leading edge of the PPS pulse. Because the capture is done by - the hardware there is no interrupt latency in the measurement. The time - counter runs at 24Mhz, providing a measurement resolution of 42 - nanoseconds.</p> -<p class="Pp">To use the PPS timing information provided by this driver with - <a class="Xr">ntpd(8)</a>, symlink the <span class="Pa">/dev/dmtpps</span> - device to <span class="Pa">/dev/pps0</span> and configure server - <var class="Va">127.127.22.0</var> in <a class="Xr">ntp.conf(5)</a> to - configure a type 22 (ATOM) refclock.</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="DRIVER_CONFIGURATION"><a class="permalink" href="#DRIVER_CONFIGURATION">DRIVER - CONFIGURATION</a></h1> -<p class="Pp">The AM335x hardware provides four timer devices with a capture - input pin, DMTimer4 through DMTimer7. Because it also provides the active - system time counter, only one instance of the - <code class="Nm">am335x_dmtpps</code> driver can be active at a time. The - driver uses system pin configuration to determine which hardware timer - device to use. Configure the timer input pin in the system's FDT data, or by - supplying the pin name using a tunable variable in - <a class="Xr">loader.conf(5)</a>.</p> -<p class="Pp">To use a standard kernel and FDT data, use - <a class="Xr">loader.conf(5)</a> to load the - <code class="Nm">am335x_dmtpps</code> module and set the - <var class="Va">hw.am335x_dmtpps.input</var> tunable variable to the name of - the input pin, one of the following:</p> -<p class="Pp"></p> -<div class="Bd-indent"> -<dl class="Bl-tag Bl-compact"> - <dt id="Name"><a class="permalink" href="#Name"><i class="Em">Name</i></a></dt> - <dd><a class="permalink" href="#Hardware"><i class="Em" id="Hardware">Hardware</i></a></dd> - <dt>P8-7</dt> - <dd>DMTimer4; Beaglebone P8 header pin 7.</dd> - <dt>P8-8</dt> - <dd>DMTimer7; Beaglebone P8 header pin 8.</dd> - <dt>P8-9</dt> - <dd>DMTimer5; Beaglebone P8 header pin 9.</dd> - <dt>P8-10</dt> - <dd>DMTimer6; Beaglebone P8 header pin 10.</dd> - <dt>GPMC_ADVn_ALE</dt> - <dd>DMTimer4.</dd> - <dt>GPMC_BEn0_CLE</dt> - <dd>DMTimer5.</dd> - <dt>GPMC_WEn</dt> - <dd>DMTimer6.</dd> - <dt>GPMC_OEn_REn</dt> - <dd>DMTimer7.</dd> -</dl> -</div> -<p class="Pp">To configure the <code class="Nm">am335x_dmtpps</code> driver - using FDT data, create a new pinctrl node by referencing the standard - <var class="Va">am33xx_pinmux</var> driver node (which is defined in - am33xx.dtsi) in your dts file. For example:</p> -<div class="Bd Pp Li"> -<pre> &am33xx_pinmux { - timer4_pins: timer4_pins { - pinctrl-single,pins = <0x90 (PIN_INPUT | MUX_MODE2)>; - }; - };</pre> -</div> -<p class="Pp">Add pinctrl properties referencing - <var class="Va">timer4_pins</var> to the standard - <var class="Va">timer4</var> device node (also defined in am33xx.dtsi) by - referencing it in your dts file as follows:</p> -<div class="Bd Pp Li"> -<pre> &timer4 { - pinctrl-names = "default"; - pinctrl-0 = <&timer4_pins>; - };</pre> -</div> -</section> -<section class="Sh"> -<h1 class="Sh" id="FILES"><a class="permalink" href="#FILES">FILES</a></h1> -<dl class="Bl-tag Bl-compact"> - <dt><span class="Pa">/dev/dmtpps</span></dt> - <dd>The device providing <a class="Xr">ioctl(2)</a> access to the RFC 2783 - API.</dd> -</dl> -</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">timecounters(4)</a>, - <a class="Xr">loader.conf(5)</a>, <a class="Xr">ntp.conf(5)</a>, - <a class="Xr">ntpd(8)</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">am335x_dmtpps</code> device driver first - appeared in <span class="Ux">FreeBSD 11.0</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">am335x_dmtpps</code> device driver and this - manual page were written by <span class="An">Ian Lepore</span> - <<a class="Mt" href="mailto:ian@FreeBSD.org">ian@FreeBSD.org</a>>.</p> -</section> -</div> -<table class="foot"> - <tr> - <td class="foot-date">August 12, 2015</td> - <td class="foot-os">FreeBSD 15.0</td> - </tr> -</table> |