ssdfb(4): nix BUGS section, add EXAMPLES section
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.\" $NetBSD: ssdfb.4,v 1.4 2019/11/02 14:47:35 tnn Exp $
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.\" $NetBSD: ssdfb.4,v 1.5 2021/08/01 15:35:47 tnn Exp $
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.\"
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.\" Copyright (c) 2019 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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@ -27,7 +27,7 @@
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd November 2, 2019
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.Dd August 1, 2021
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.Dt SSDFB 4
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.Os
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.Sh NAME
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@ -90,6 +90,24 @@ enable inverse video
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.Em 0x400 :
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forcibly attach as console
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.El
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.Pp
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On most displays, the contrast setting can be adjusted with the
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.Xr wsconsctl 8
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program.
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.Sh EXAMPLES
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To attach an SSD1322 display using the 4-wire SPI interface on an
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Allwinner A20 ARM single board computer, the following Device Tree overlay
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can be used:
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.Bd -literal -offset indent
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&spi0 {
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ssdfb@0 {
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compatible = "solomon,ssd1322";
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reg = <0x00>;
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dc-gpio = <0x10 0x07 0x02 0x00>;
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status = "okay";
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};
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};
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.Ed
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.Sh SEE ALSO
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.Xr iic 4 ,
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.Xr wsdisplay 4
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@ -113,7 +131,3 @@ It was inspired by (and shares its name with) the
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driver written by
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.An Patrick Wildt Aq Mt patrick@blueri.se
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but does not share any code.
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.Sh BUGS
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The "4-wire SPI" MCU interface which requires an auxiliary
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.Xr gpio 4
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pin for the D/C# signal is currently not supported.
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