From: Michael Walle <michael@walle.cc> To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Michael Walle <michael@walle.cc> Subject: [PATCH v2 1/2] dt-bindings: clock: document the fsl-sai driver Date: Tue, 10 Dec 2019 00:33:04 +0100 [thread overview] Message-ID: <20191209233305.18619-1-michael@walle.cc> (raw) Signed-off-by: Michael Walle <michael@walle.cc> --- changes since v1: - dual license gpl-2.0-only and bsd-2-clause - add "additionalProperties: false" - wrap example in soc {} node with correct #address-cells and #size-cells .../bindings/clock/fsl,sai-clock.yaml | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/fsl,sai-clock.yaml diff --git a/Documentation/devicetree/bindings/clock/fsl,sai-clock.yaml b/Documentation/devicetree/bindings/clock/fsl,sai-clock.yaml new file mode 100644 index 000000000000..8fb2060ac47f --- /dev/null +++ b/Documentation/devicetree/bindings/clock/fsl,sai-clock.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bindings/clock/fsl,sai-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale SAI bitclock-as-a-clock binding + +maintainers: + - Michael Walle <michael@walle.cc> + +description: | + It is possible to use the BCLK pin of a SAI module as a generic clock + output. Some SoC are very constrained in their pin multiplexer + configuration. Eg. pins can only be changed groups. For example, on the + LS1028A SoC you can only enable SAIs in pairs. If you use only one SAI, + the second pins are wasted. Using this binding it is possible to use the + clock of the second SAI as a MCLK clock for an audio codec, for example. + + This is a composite of a gated clock and a divider clock. + +properties: + compatible: + const: fsl,vf610-sai-clock + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + '#clock-cells': + const: 0 + +required: + - compatible + - reg + - clocks + - '#clock-cells' + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + mclk: clock-mclk@f130080 { + compatible = "fsl,vf610-sai-clock"; + reg = <0x0 0xf130080 0x0 0x80>; + #clock-cells = <0>; + clocks = <&parentclk>; + }; + }; -- 2.20.1
next reply other threads:[~2019-12-09 23:33 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-12-09 23:33 Michael Walle [this message] 2019-12-09 23:33 ` [PATCH v2 2/2] clk: fsl-sai: new driver Michael Walle 2019-12-24 8:05 ` Stephen Boyd 2020-01-01 15:15 ` Michael Walle 2020-01-02 8:09 ` Stephen Boyd 2020-01-03 9:00 ` Michael Walle 2019-12-11 14:28 ` [PATCH v2 1/2] dt-bindings: clock: document the fsl-sai driver Rob Herring
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20191209233305.18619-1-michael@walle.cc \ --to=michael@walle.cc \ --cc=devicetree@vger.kernel.org \ --cc=linux-clk@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=mark.rutland@arm.com \ --cc=mturquette@baylibre.com \ --cc=robh+dt@kernel.org \ --cc=sboyd@kernel.org \ --subject='Re: [PATCH v2 1/2] dt-bindings: clock: document the fsl-sai driver' \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).