linux-kernel - Re: [PATCH v2] ASoC: mediatek: mt8188: Mark AFE_DAC

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Message-ID: <e73062ec5d572e6f164ff445b616f2e9662fc0ee.camel@mediatek.com>
Date: Wed, 7 Aug 2024 04:21:09 +0000
From: Trevor Wu (吳文良) <Trevor.Wu@...iatek.com>
To: "lgirdwood@...il.com" <lgirdwood@...il.com>,
	YR Yang (杨蓉) <YR.Yang@...iatek.com>,
	"matthias.bgg@...il.com" <matthias.bgg@...il.com>, "broonie@...nel.org"
	<broonie@...nel.org>, "tiwai@...e.com" <tiwai@...e.com>, "perex@...ex.cz"
	<perex@...ex.cz>, "angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
CC: "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-mediatek@...ts.infradead.org"
	<linux-mediatek@...ts.infradead.org>, "linux-sound@...r.kernel.org"
	<linux-sound@...r.kernel.org>, Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [PATCH v2] ASoC: mediatek: mt8188: Mark AFE_DAC_CON0 register as
 volatile

On Thu, 2024-08-01 at 16:43 +0800, yr.yang wrote:
> From: YR Yang <yr.yang@...iatek.com>
> 
> Add AFE Control Register 0 to the volatile_register.
> AFE_DAC_CON0 can be modified by both the SOF and ALSA drivers.
> If this register is read and written in cache mode, the cached value
> might not reflect the actual value when the register is modified by
> another driver. It can cause playback or capture failures. Therefore,
> it is necessary to add AFE_DAC_CON0 to the list of volatile
> registers.
> 
> Signed-off-by: YR Yang <yr.yang@...iatek.com>
> ---
> 
Reviewed-by: Trevor Wu <trevor.wu@...iatek.com>


Thanks,
Trevor