Linux SPI subsystem development
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From: Mark Brown <broonie@kernel.org>
To: "Usyskin, Alexander" <alexander.usyskin@intel.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	"Vivi, Rodrigo" <rodrigo.vivi@intel.com>,
	"Lubart, Vitaly" <vitaly.lubart@intel.com>,
	"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
	"intel-gfx@lists.freedesktop.org"
	<intel-gfx@lists.freedesktop.org>,
	Tudor Ambarus <tudor.ambarus@linaro.org>,
	Pratyush Yadav <pratyush@kernel.org>,
	Michael Walle <michael@walle.cc>,
	"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>
Subject: Re: [PATCH 00/10] drm/i915/spi: spi access for discrete graphics
Date: Tue, 12 Sep 2023 13:14:29 +0100	[thread overview]
Message-ID: <0d60a78b-0305-4cb3-babe-4eefe5001b29@sirena.org.uk> (raw)
In-Reply-To: <CY5PR11MB63667FBB6AF5B4331419BDAAEDF1A@CY5PR11MB6366.namprd11.prod.outlook.com>

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On Tue, Sep 12, 2023 at 10:50:22AM +0000, Usyskin, Alexander wrote:

> The spi controller on discreet graphics card is not visible to user-space.
> Spi access flows are supported by another hardware module and relevant registers are
> available on graphics device memory bar.

No SPI controllers are directly visible to userspace, some SPI devices
are selectively exposed but that needs to be explicitly requested and is
generally discouraged.

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  reply	other threads:[~2023-09-12 12:14 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20230910123949.1251964-1-alexander.usyskin@intel.com>
2023-09-11  7:42 ` [PATCH 00/10] drm/i915/spi: spi access for discrete graphics Miquel Raynal
2023-09-12 10:50   ` Usyskin, Alexander
2023-09-12 12:14     ` Mark Brown [this message]
2023-09-12 13:15       ` Usyskin, Alexander
2023-09-12 13:21         ` Miquel Raynal
2023-09-12 13:36           ` Mark Brown
2023-09-20 13:52             ` Usyskin, Alexander
2023-09-20 15:54               ` Mark Brown
2023-09-20 21:00                 ` Winkler, Tomas
2023-09-21 11:29                   ` Mark Brown
2023-09-27 14:11                     ` Usyskin, Alexander
2023-09-27 14:37                       ` Mark Brown
2023-09-27 14:54                         ` Miquel Raynal
2023-09-28  6:33                           ` Usyskin, Alexander

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