Re: [PATCH 7/8] ALSA: hda: Fix single byte writing issue for Hygon family 18h model 5h

From: David Laight

Date: Fri Mar 27 2026 - 09:02:41 EST


On Fri, 27 Mar 2026 16:11:13 +0800
Fu Hao <fuhao@xxxxxxxxxxxxxx> wrote:

> On Hygon family 18h model 5h controller, some registers such as
> GCTL, SD_CTL and SD_CTL_3B should be accessed in dword, or the
> writing will fail.

What's a 'dword' ?
It is short for 'double word', a 64bit cpu has a word size of
64 bits, so a dword would be 128 bits.

On Hygon family 18h model 5h controller 32bit accesses must be
used to access registers such as CTL, SD_CTL and SD_CTL_3B.

David