linux-kernel - Re: [PATCH v5 1/4] Input: Add driver for Cypress Generation 5 touchscreen

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Message-ID: <Yes2+ps8qTT52g3Z@robh.at.kernel.org>
Date:   Fri, 21 Jan 2022 16:43:06 -0600
From:   Rob Herring <robh@...nel.org>
To:     Peter Geis <pgwipeout@...il.com>
Cc:     alistair@...stair23.me, alistair23@...il.com, andreas@...nade.info,
        devicetree@...r.kernel.org, dmitry.torokhov@...il.com,
        linus.walleij@...aro.org, linux-arm-kernel@...ts.infradead.org,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        maxime.ripard@...tlin.com, mylene.josserand@...tlin.com,
        rydberg@...math.org
Subject: Re: [PATCH v5 1/4] Input: Add driver for Cypress Generation 5
 touchscreen

On Tue, Jan 18, 2022 at 08:26:37PM -0500, Peter Geis wrote:
> Good Evening,
> 
> I tried using this with a cypress tma448 and thought there was an issue
> with the driver.
> Further investigation found the tma448 in question had no configuration
> burned into it, thus max size and pressure are zero.
> 
> I've added the patch below to extend the driver with device tree
> overrides.
> Unfortunately device_property_read_u16 is broken on arm64 currently, as
> it returns zero.

FYI, I replied to your bug report:

https://lore.kernel.org/all/CAMdYzYquceSBrOsvO8rW9wmJA_RO=HSwv_waVoS=0hsP414T-A@mail.gmail.com/

Rob