diff options
Diffstat (limited to 'static/freebsd/man4/man4.arm/imx_spi.4 3.html')
| -rw-r--r-- | static/freebsd/man4/man4.arm/imx_spi.4 3.html | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/static/freebsd/man4/man4.arm/imx_spi.4 3.html b/static/freebsd/man4/man4.arm/imx_spi.4 3.html new file mode 100644 index 00000000..308f2fdc --- /dev/null +++ b/static/freebsd/man4/man4.arm/imx_spi.4 3.html @@ -0,0 +1,69 @@ +<table class="head"> + <tr> + <td class="head-ltitle">IMX_SPI(4)</td> + <td class="head-vol">Device Drivers Manual (arm)</td> + <td class="head-rtitle">IMX_SPI(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">imx_spi</code> — <span class="Nd">device + driver for the NXP i.MX family Serial Peripheral Interface (SPI)</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 imx_spi</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>imx_spi_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">imx_spi</code> driver provides support for + the ‘ECSPI’ (Enhanced Configurable SPI) hardware present on + the NXP i.MX family of processors. While the ECSPI hardware supports both + master and slave mode, this driver currently operates only in master + mode.</p> +<p class="Pp">Due to hardware quirks, the <code class="Nm">imx_spi</code> driver + requires that all chip select pins be configured as GPIO pins. Use the FDT + property ‘cs-gpios’ to specify which pins to use as chip + selects. You may use any GPIO pins, including the ones that the hardware + would normally use as SPI select pins; just configure them as GPIO in the + <a class="Xr">fdt_pinctrl(4)</a> data.</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SYSCTL_VARIABLES"><a class="permalink" href="#SYSCTL_VARIABLES">SYSCTL + VARIABLES</a></h1> +<p class="Pp">The following variables are available via + <a class="Xr">sysctl(8)</a>, and as <a class="Xr">loader(8)</a> + tunables:</p> +<dl class="Bl-tag"> + <dt id="dev.imx_spi._d.debug"><var class="Va">dev.imx_spi.%d.debug</var></dt> + <dd>Output debugging info when non-zero. A value of 1 displays information + about bus transfers, 2 adds information about bus clock frequency and chip + select activity, and 3 adds information about interrupt handling.</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">fdt(4)</a>, <a class="Xr">fdt_pinctrl(4)</a>, + <a class="Xr">sysctl(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">imx_spi</code> driver first appeared in + <span class="Ux">FreeBSD 12.0</span>.</p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">July 9, 2018</td> + <td class="foot-os">FreeBSD 15.0</td> + </tr> +</table> |