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Date: Tue, 15 Mar 2022 12:22:22 +0100 From: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com> To: Lee Jones <lee.jones@...aro.org> Cc: Stephen Boyd <swboyd@...omium.org>, Benson Leung <bleung@...omium.org>, linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev, Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org, Guenter Roeck <groeck@...omium.org>, Douglas Anderson <dianders@...omium.org>, Craig Hesling <hesling@...omium.org>, Tom Hughes <tomhughes@...omium.org>, Alexandru M Stan <amstan@...omium.org> Subject: Re: [PATCH 1/2] dt-bindings: mfd: Add ChromeOS fingerprint binding On 15/03/2022 12:10, Lee Jones wrote: > On Tue, 15 Mar 2022, Krzysztof Kozlowski wrote: > >> On 15/03/2022 00:22, Stephen Boyd wrote: >>> Add a binding to describe the fingerprint processor found on Chromeboks >>> with a fingerprint sensor. >>> >>> Cc: Rob Herring <robh+dt@...nel.org> >>> Cc: <devicetree@...r.kernel.org> >>> Cc: Guenter Roeck <groeck@...omium.org> >>> Cc: Douglas Anderson <dianders@...omium.org> >>> Cc: Craig Hesling <hesling@...omium.org> >>> Cc: Tom Hughes <tomhughes@...omium.org> >>> Cc: Alexandru M Stan <amstan@...omium.org> >>> Signed-off-by: Stephen Boyd <swboyd@...omium.org> >>> --- >>> .../bindings/mfd/google,cros-ec-fp.yaml | 89 +++++++++++++++++++ >>> 1 file changed, 89 insertions(+) >>> create mode 100644 Documentation/devicetree/bindings/mfd/google,cros-ec-fp.yaml >>> >>> diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec-fp.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec-fp.yaml >>> new file mode 100644 >>> index 000000000000..05d2b2b9b713 >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec-fp.yaml >>> @@ -0,0 +1,89 @@ >>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >>> +%YAML 1.2 >>> +--- >>> +$id: http://devicetree.org/schemas/mfd/google,cros-ec-fp.yaml# >> >> Why is this in the MFD directory? Is it really a Multi Function Device? >> Description is rather opposite. You also did not CC MFD maintainer. > > A lot of the ChromeOS Embedded Controller support used to be located > in MFD. There are still remnants, but most was moved to > drivers/platform IIRC. > > Please see: drivers/mfd/cros_ec_dev.c Yes, I know, that part is a MFD. But why the fingerprint controller part is MFD? To me it is closer to input device. Best regards, Krzysztof
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