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Date: Tue, 25 Feb 2025 22:00:02 +0100
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Subject: Re: [PATCH v5 0/6] Add spi-hid, transport for HID over SPI bus
To: Jarrett Schultz <jaschultzms@gmail.com>,
 Dmitry Torokhov <dmitry.torokhov@gmail.com>, Rob Herring
 <robh+dt@kernel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@linaro.org>, Jonathan Corbet <corbet@lwn.net>,
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>,
 Jiri Kosina <jikos@kernel.org>,
 Benjamin Tissoires <benjamin.tissoires@redhat.com>,
 Bjorn Andersson <bjorn.andersson@linaro.org>, Shawn Guo
 <shawnguo@kernel.org>, Geert Uytterhoeven <geert+renesas@glider.be>,
 Marcel Ziswiler <marcel.ziswiler@toradex.com>,
 Biju Das <biju.das.jz@bp.renesas.com>,
 Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, Vinod Koul <vkoul@kernel.org>
Cc: Dmitry Antipov <dmanti@microsoft.com>, linux-input@vger.kernel.org,
 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
 linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 Jarrett Schultz <jaschultz@microsoft.com>
References: <20220707165902.3184-1-jaschultzMS@gmail.com>
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From: Konrad Dybcio <konradybcio@kernel.org>
In-Reply-To: <20220707165902.3184-1-jaschultzMS@gmail.com>
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On 7.07.2022 6:58 PM, Jarrett Schultz wrote:
> From: Jarrett Schultz <jaschultz@microsoft.com>
> 
> Surface Duo devices use a touch digitizer that communicates to the main
> SoC via SPI and presents itself as a HID device. This patch's goal is to
> add the spi-hid transport driver to drivers/hid. The driver follows the
> publically available HID Over SPI Protocol Specification version 1.0.
> 
> The specification is available at
> https://www.microsoft.com/en-us/download/details.aspx?id=103325.

Hi, I know this is a bit of an old thread..

The spec mentions some oddities around dual or quad SPI - do you
perhaps have some version of this patchset that implements those?

Konrad