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ssdfb(4): add an iic fdt attachment example also

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tnn 2021-08-01 16:17:05 +00:00
parent c651c20bd5
commit 25e0fac49a
1 changed files with 23 additions and 8 deletions
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31
share/man/man4/ssdfb.4
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@ -1,4 +1,4 @@
.\" $NetBSD: ssdfb.4,v 1.5 2021/08/01 15:35:47 tnn Exp $
.\" $NetBSD: ssdfb.4,v 1.6 2021/08/01 16:17:05 tnn Exp $
.\"
.\" Copyright (c) 2019 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -95,17 +95,32 @@ 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
To attach an SSD1322 display using the 4-wire
.Xr spi 4
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";
};
ssdfb@0 {
compatible = "solomon,ssd1322";
reg = <0x00>;
dc-gpio = <0x10 0x07 0x02 0x00>;
status = "okay";
};
};
.Ed
.Pp
To attach an SSD1306 display using the
.Xr iic 4
interface on the same board, use:
.Bd -literal -offset indent
&i2c2 {
ssdfb@3c {
compatible = "solomon,ssd1306fb-i2c";
reg = <0x3c>;
status = "okay";
};
};
.Ed
.Sh SEE ALSO