[src/trunk]: src/share/man/man4 Fix a wrong description in previous.

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1819a3194117
branches:  trunk
changeset: 954468:1819a3194117
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Apr 10 04:10:21 2021 +0000

description:
Fix a wrong description in previous.
MD drivers can support 20 or 24 bits formats even under current MI layer's
constraints.
http://mail-index.netbsd.org/source-changes-d/2021/03/12/msg013255.html

diffstat:

 share/man/man4/hdaudio.4 |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (22 lines):

diff -r 89d05fca96ca -r 1819a3194117 share/man/man4/hdaudio.4
--- a/share/man/man4/hdaudio.4  Sat Apr 10 00:35:24 2021 +0000
+++ b/share/man/man4/hdaudio.4  Sat Apr 10 04:10:21 2021 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: hdaudio.4,v 1.19 2021/03/12 08:03:24 nia Exp $
+.\"    $NetBSD: hdaudio.4,v 1.20 2021/04/10 04:10:21 isaki Exp $
 .\"
 .\" Copyright (c) 2009, 2010 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -133,8 +133,8 @@
 .It
 Modem function groups
 .It
-20-bit and 24-bit I/O formats.
-The machine-independent audio layer supports samples with 32-bit precision,
-but these will be converted down to 16-bit before output, because converting
-to a hardware precision that isn't a power of two is not yet handled.
+Hardware formats higher than 16 bits precision.
+Since the machine-independent audio layer converts all input from
+the userland and the hardware layer to 16 bits precision for processing,
+so there is no (or few) merit to support them.
 .El