[PATCH v3 3/6] dt-bindings: clock: add Ambarella CV75 RCT
Long Zhao via B4 Relay <[email protected]>
| Newsgroups | org.kernel.vger.linux-clk,dev.linux.lists.soc,org.infradead.lists.linux-arm-kernel,org.kernel.feeds.b4-sent,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
From: Long Zhao <[email protected]> Document the CV75 RCT clock controller and the clock ID header used by DT consumers. Signed-off-by: Long Zhao <[email protected]> --- .../bindings/clock/ambarella,cv75-rct.yaml | 58 ++++++++++++++++++++++ include/dt-bindings/clock/ambarella,cv75-rct.h | 15 ++++++ 2 files changed, 73 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/ambarella,cv75-rct.yaml b/Documentation/devicetree/bindings/clock/ambarella,cv75-rct.yaml new file mode 100644 index 000000000000..eb5956fc32bc --- /dev/null +++ b/Documentation/devicetree/bindings/clock/ambarella,cv75-rct.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/ambarella,cv75-rct.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ambarella CV75 RCT Clock Controller + +maintainers: + - Long Zhao <[email protected]> + +description: | + The RCT (Reset and Clock Tree) block on the Ambarella CV75 SoC provides + PLLs, clock muxes and dividers for on-chip peripherals. + + The same register region is also exposed as a syscon for other SoC + blocks (e.g. pin drive-strength), hence the "syscon" compatible. + + Clock indices are defined in include/dt-bindings/clock/ambarella,cv75-rct.h. + +properties: + + compatible: + items: + - const: ambarella,cv75-rct + - const: syscon + + reg: + maxItems: 1 + + clocks: + description: Reference crystal oscillator (typically 24 MHz) + maxItems: 1 + + clock-names: + const: osc + + "#clock-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - "#clock-cells" + +additionalProperties: false + +examples: + - | + clock-controller@ed080000 { + compatible = "ambarella,cv75-rct", "syscon"; + reg = <0xed080000 0x1000>; + clocks = <&osc>; + clock-names = "osc"; + #clock-cells = <1>; + }; diff --git a/include/dt-bindings/clock/ambarella,cv75-rct.h b/include/dt-bindings/clock/ambarella,cv75-rct.h new file mode 100644 index 000000000000..0a6e946c9108 --- /dev/null +++ b/include/dt-bindings/clock/ambarella,cv75-rct.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */ +/* + * Copyright (C) 2026 Ambarella, Inc. + */ + +#ifndef _DT_BINDINGS_CLOCK_AMBARELLA_CV75_RCT_H +#define _DT_BINDINGS_CLOCK_AMBARELLA_CV75_RCT_H + +/* Boot / bus clocks */ +#define CV75_GCLK_UART0 0 +#define CV75_GCLK_CORE 1 +#define CV75_GCLK_AHB 2 +#define CV75_GCLK_APB 3 + +#endif -- 2.34.1