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Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml | 60 |
1 files changed, 60 insertions, 0 deletions
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@sifive.com> + - Paul Walmsley <paul.walmsley@sifive.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@10000000 { + compatible = "sifive,fu740-c000-prci"; + reg = <0x10000000 0x1000>; + clocks = <&hfclk>, <&rtcclk>; + #clock-cells = <1>; + }; |