linux-kernel - [PATCH 0/2] Input: cyttsp5

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Message-ID: <20221117190507.87535-1-linmengbo0689@protonmail.com>
Date:   Thu, 17 Nov 2022 19:05:22 +0000
From:   "Lin, Meng-Bo" <linmengbo0689@...tonmail.com>
To:     linux-input@...r.kernel.org
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alistair Francis <alistair@...stair23.me>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] Input: cyttsp5 - add vddio regulator

The Samsung touchscreen controllers are often used with external pull-up
for the interrupt line and the I2C lines, so we might need to enable
a regulator to bring the lines into usable state. Otherwise, this might
cause spurious interrupts and reading from I2C will fail.

Implement support for a "vddio-supply" that is enabled by the cyttsp5
driver so that the regulator gets enabled when needed.