Module Name: src
Committed By: tnn
Date: Sun Aug 1 15:35:47 UTC 2021
Modified Files:
src/share/man/man4: ssdfb.4
Log Message:
ssdfb(4): nix BUGS section, add EXAMPLES section
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/share/man/man4/ssdfb.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/ssdfb.4
diff -u src/share/man/man4/ssdfb.4:1.4 src/share/man/man4/ssdfb.4:1.5
--- src/share/man/man4/ssdfb.4:1.4 Sat Nov 2 14:47:35 2019
+++ src/share/man/man4/ssdfb.4 Sun Aug 1 15:35:47 2021
@@ -1,4 +1,4 @@
-.\" $NetBSD: ssdfb.4,v 1.4 2019/11/02 14:47:35 tnn Exp $
+.\" $NetBSD: ssdfb.4,v 1.5 2021/08/01 15:35:47 tnn Exp $
.\"
.\" Copyright (c) 2019 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -27,7 +27,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd November 2, 2019
+.Dd August 1, 2021
.Dt SSDFB 4
.Os
.Sh NAME
@@ -90,6 +90,24 @@ enable inverse video
.Em 0x400 :
forcibly attach as console
.El
+.Pp
+On most displays, the contrast setting can be adjusted with the
+.Xr wsconsctl 8
+program.
+.Sh EXAMPLES
+To attach an SSD1322 display using the 4-wire SPI interface on an
+Allwinner A20 ARM single board computer, the following Device Tree overlay
+can be used:
+.Bd -literal -offset indent
+&spi0 {
+ ssdfb@0 {
+ compatible = "solomon,ssd1322";
+ reg = <0x00>;
+ dc-gpio = <0x10 0x07 0x02 0x00>;
+ status = "okay";
+ };
+};
+.Ed
.Sh SEE ALSO
.Xr iic 4 ,
.Xr wsdisplay 4
@@ -113,7 +131,3 @@ It was inspired by (and shares its name
driver written by
.An Patrick Wildt Aq Mt [email protected]
but does not share any code.
-.Sh BUGS
-The "4-wire SPI" MCU interface which requires an auxiliary
-.Xr gpio 4
-pin for the D/C# signal is currently not supported.
