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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-487270ea4bdsm30210755e9.6.2026.03.27.06.02.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Mar 2026 06:02:27 -0700 (PDT) Date: Fri, 27 Mar 2026 13:02:26 +0000 From: David Laight To: Fu Hao Cc: perex@perex.cz, tiwai@suse.com, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org Subject: Re: [PATCH 7/8] ALSA: hda: Fix single byte writing issue for Hygon family 18h model 5h Message-ID: <20260327130226.1e239670@pumpkin> In-Reply-To: References: X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 27 Mar 2026 16:11:13 +0800 Fu Hao 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