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Date: Thu, 26 Nov 2020 11:00:43 +0800 From: Zong Li <zong.li@...ive.com> To: robh+dt@...nel.org, sboyd@...nel.org, mturquette@...libre.com, palmer@...belt.com, paul.walmsley@...ive.com, devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org Cc: Zong Li <zong.li@...ive.com> Subject: [PATCH] dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI Add YAML DT binding documentation for the SiFive FU740 PRCI. The link of unmatched board as follow, the U740-C000 manual would be present in the same page later. https://www.sifive.com/boards/hifive-unmatched Passes dt_binding_check. Signed-off-by: Zong Li <zong.li@...ive.com> --- .../bindings/clock/sifive/fu740-prci.yaml | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml diff --git a/Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml b/Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml new file mode 100644 index 000000000000..e17143cac316 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2020 SiFive, Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/sifive/fu740-prci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SiFive FU740 Power Reset Clock Interrupt Controller (PRCI) + +maintainers: + - Zong Li <zong.li@...ive.com> + - Paul Walmsley <paul.walmsley@...ive.com> + +description: + On the FU740 family of SoCs, most system-wide clock and reset integration + is via the PRCI IP block. + The clock consumer should specify the desired clock via the clock ID + macros defined in include/dt-bindings/clock/sifive-fu740-prci.h. + These macros begin with PRCI_CLK_. + + The hfclk and rtcclk nodes are required, and represent physical + crystals or resonators located on the PCB. These nodes should be present + underneath /, rather than /soc. + +properties: + compatible: + const: sifive,fu740-c000-prci + + reg: + maxItems: 1 + + clocks: + items: + - description: high frequency clock. + - description: RTL clock. + + clock-names: + items: + - const: hfclk + - const: rtcclk + + "#clock-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - "#clock-cells" + +additionalProperties: false + +examples: + - | + prci: clock-controller@...00000 { + compatible = "sifive,fu740-c000-prci"; + reg = <0x10000000 0x1000>; + clocks = <&hfclk>, <&rtcclk>; + #clock-cells = <1>; + }; -- 2.29.2
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