linux-kernel - Re: [PATCH v7 0/1] Add tas2781 driver for SPI.

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Date: Thu, 13 Jun 2024 14:23:27 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Baojun Xu <baojun.xu@...com>
Cc: <robh+dt@...nel.org>,
	<andriy.shevchenko@...ux.intel.com>,
	<lgirdwood@...il.com>,
	<perex@...ex.cz>,
	<pierre-louis.bossart@...ux.intel.com>,
	<kevin-lu@...com>,
	<shenghao-ding@...com>,
	<navada@...com>,
	<13916275206@....com>,
	<v-hampiholi@...com>,
	<v-po@...com>,
	<niranjan.hy@...com>,
	<alsa-devel@...a-project.org>,
	<linux-kernel@...r.kernel.org>,
	<liam.r.girdwood@...el.com>,
	<yung-chuan.liao@...ux.intel.com>,
	<broonie@...nel.org>,
	<soyer@....hu>
Subject: Re: [PATCH v7 0/1] Add tas2781 driver for SPI.

On Thu, 13 Jun 2024 10:26:32 +0200,
Baojun Xu wrote:
> 
> This patch was used to add TAS2781 devices on SPI support in sound/pci/hda.
> It use ACPI node descript about parameters of TAS2781 on SPI, it like:
>     Scope (_SB.PC00.SPI0)
>     {
>         Device (GSPK)
>         {
>             Name (_HID, "TXNW2781")  // _HID: Hardware ID
>             Method (_CRS, 0, NotSerialized)
>             {
>                 Name (RBUF, ResourceTemplate ()
>                 {
>                     SpiSerialBusV2 (...)
>                     SpiSerialBusV2 (...)
>                 }
>             }
>         }
>     }
> 
> And in platform/x86/serial-multi-instantiate.c, those spi devices will be
> added into system as a single SPI device, so TAS2781 SPI driver will
> probe twice for every single SPI device. And driver will also parser
> mono DSP firmware binary and RCA binary for itself.
> 
> Signed-off-by: Baojun Xu <baojun.xu@...com>
> 
> Baojun Xu (1):
>   ALSA: hda/tas2781: Add tas2781 hda driver based on SPI

Since you're sending only one patch, we need no cover letter, and all
needed stuff should be documented in the patch description itself.
That is, The texts like above should go there, too.


thanks,

Takashi