From: John Crispin <john@xxxxxxxxxxx> Adds device tree binding documentation for clocks in the EN7523 SOC. Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Signed-off-by: Felix Fietkau <nbd@xxxxxxxx> Signed-off-by: John Crispin <john@xxxxxxxxxxx> Signed-off-by: Felix Fietkau <nbd@xxxxxxxx> --- .../bindings/clock/airoha,en7523-scu.yaml | 58 +++++++++++++++++++ include/dt-bindings/clock/en7523-clk.h | 17 ++++++ 2 files changed, 75 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml create mode 100644 include/dt-bindings/clock/en7523-clk.h diff --git a/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml b/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml new file mode 100644 index 000000000000..d60e74654809 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/airoha,en7523-scu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: EN7523 Clock Device Tree Bindings + +maintainers: + - Felix Fietkau <nbd@xxxxxxxx> + - John Crispin <nbd@xxxxxxxx> + +description: | + This node defines the System Control Unit of the EN7523 SoC, + a collection of registers configuring many different aspects of the SoC. + + The clock driver uses it to read and configure settings of the + PLL controller, which provides clocks for the CPU, the bus and + other SoC internal peripherals. + + Each clock is assigned an identifier and client nodes use this identifier + to specify which clock they consume. + + All these identifiers can be found in: + [1]: <include/dt-bindings/clock/en7523-clk.h>. + + The clocks are provided inside a system controller node. + +properties: + compatible: + items: + - const: airoha,en7523-scu + + reg: + maxItems: 2 + + "#clock-cells": + description: + The first cell indicates the clock number, see [1] for available + clocks. + const: 1 + +required: + - compatible + - reg + - '#clock-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/en7523-clk.h> + scu: system-controller@1fa20000 { + compatible = "airoha,en7523-scu"; + reg = <0x1fa20000 0x400>, + <0x1fb00000 0x1000>; + #clock-cells = <1>; + }; diff --git a/include/dt-bindings/clock/en7523-clk.h b/include/dt-bindings/clock/en7523-clk.h new file mode 100644 index 000000000000..717d23a5e5ae --- /dev/null +++ b/include/dt-bindings/clock/en7523-clk.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ + +#ifndef _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_ +#define _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_ + +#define EN7523_CLK_GSW 0 +#define EN7523_CLK_EMI 1 +#define EN7523_CLK_BUS 2 +#define EN7523_CLK_SLIC 3 +#define EN7523_CLK_SPI 4 +#define EN7523_CLK_NPU 5 +#define EN7523_CLK_CRYPTO 6 +#define EN7523_CLK_PCIE 7 + +#define EN7523_NUM_CLOCKS 8 + +#endif /* _DT_BINDINGS_CLOCK_AIROHA_EN7523_H_ */ -- 2.35.1
