On 23/07/2024 00:33, Sunyeal Hong wrote: > Add dt-schema for ExynosAuto v920 SoC clock controller. > Add device tree clock binding definitions for below CMU blocks. > > - CMU_TOP > - CMU_PERIC0 > > Signed-off-by: Sunyeal Hong <sunyeal.hong@xxxxxxxxxxx> > --- > .../clock/samsung,exynosautov920-clock.yaml | 115 +++++++++++ > .../clock/samsung,exynosautov920.h | 191 ++++++++++++++++++ > 2 files changed, 306 insertions(+) > create mode 100644 Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml > create mode 100644 include/dt-bindings/clock/samsung,exynosautov920.h > > diff --git a/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml > new file mode 100644 > index 000000000000..90f9f17da959 > --- /dev/null > +++ b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml > @@ -0,0 +1,115 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/clock/samsung,exynosautov920-clock.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Samsung ExynosAuto v920 SoC clock controller > + > +maintainers: > + - Sunyeal Hong <sunyeal.hong@xxxxxxxxxxx> > + - Chanwoo Choi <cw00.choi@xxxxxxxxxxx> > + - Krzysztof Kozlowski <krzk@xxxxxxxxxx> > + - Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> > + > +description: | > + ExynosAuto v920 clock controller is comprised of several CMU units, generating > + clocks for different domains. Those CMU units are modeled as separate device > + tree nodes, and might depend on each other. Root clocks in that clock tree are > + two external clocks:: OSCCLK/XTCXO (38.4 MHz) and RTCCLK/XrtcXTI (32768 Hz). > + The external OSCCLK must be defined as fixed-rate clock in dts. > + > + CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and > + dividers; all other clocks of function blocks (other CMUs) are usually > + derived from CMU_TOP. > + > + Each clock is assigned an identifier and client nodes can use this identifier > + to specify the clock which they consume. All clocks available for usage > + in clock consumer nodes are defined as preprocessor macros in > + 'include/dt-bindings/clock/samsung,exynosautov920.h' header. > + > +properties: > + compatible: > + enum: > + - samsung,exynosautov920-cmu-top > + - samsung,exynosautov920-cmu-peric0 > + > + clocks: > + minItems: 1 > + maxItems: 3 > + > + clock-names: > + minItems: 1 > + maxItems: 3 > + > + "#clock-cells": > + const: 1 > + > + reg: > + maxItems: 1 > + > +allOf: > + - if: > + properties: > + compatible: > + contains: > + const: samsung,exynosautov920-cmu-top > + > + then: > + properties: > + clocks: > + items: > + - description: External reference clock (38.4 MHz) > + > + clock-names: > + items: > + - const: oscclk > + > + - if: > + properties: > + compatible: > + contains: > + const: samsung,exynosautov920-cmu-peric0 > + > + then: > + properties: > + clocks: > + items: > + - description: External reference clock (38.4 MHz) > + - description: CMU_PERIC0 NOC clock (from CMU_TOP) > + - description: CMU_PERIC0 IP clock (from CMU_TOP) > + > + clock-names: > + items: > + - const: oscclk > + - const: noc > + - const: ip > + > +required: > + - compatible > + - "#clock-cells" > + - clocks > + - clock-names > + - reg > + > +additionalProperties: false > + > +examples: > + # Clock controller node for CMU_PERIC0 > + - | > + #include <dt-bindings/clock/samsung,exynosautov920.h> > + > + cmu_peric0: clock-controller@10800000 { > + compatible = "samsung,exynosautov920-cmu-peric0"; > + reg = <0x10800000 0x8000>; > + #clock-cells = <1>; > + > + clocks = <&xtcxo>, > + <&cmu_top DOUT_CLKCMU_PERIC0_NOC>, > + <&cmu_top DOUT_CLKCMU_PERIC0_IP>; > + clock-names = "oscclk", > + "noc", > + "ip"; > + }; > + > +... > diff --git a/include/dt-bindings/clock/samsung,exynosautov920.h b/include/dt-bindings/clock/samsung,exynosautov920.h > new file mode 100644 > index 000000000000..ad89728a4396 > --- /dev/null > +++ b/include/dt-bindings/clock/samsung,exynosautov920.h > @@ -0,0 +1,191 @@ > +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ > +/* > + * Copyright (c) 2024 Samsung Electronics Co., Ltd. > + * Author: Sunyeal Hong <sunyeal.hong@xxxxxxxxxxx> > + * > + * Device Tree binding constants for ExynosAuto v920 clock controller. > + */ > + > +#ifndef _DT_BINDINGS_CLOCK_EXYNOSAUTOV920_H > +#define _DT_BINDINGS_CLOCK_EXYNOSAUTOV920_H > + > +/* CMU_TOP */ > +#define FOUT_SHARED0_PLL 1 > +#define FOUT_SHARED1_PLL 2 > +#define FOUT_SHARED2_PLL 3 > +#define FOUT_SHARED3_PLL 4 > +#define FOUT_SHARED4_PLL 5 > +#define FOUT_SHARED5_PLL 6 > +#define FOUT_MMC_PLL 7 > + > +/* MUX in CMU_TOP */ > +#define MOUT_SHARED0_PLL 101 This is some odd numbering. Numbers start from 0 or 1 and are continuous. Best regards, Krzysztof