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([77.85.230.22]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aa20e0869cdsm28700466b.192.2024.11.13.23.26.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Nov 2024 23:26:04 -0800 (PST) From: Ivaylo Ivanov To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Andreas_F=C3=A4rber?= , Manivannan Sadhasivam Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-actions@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v4] dt-bindings: clock: actions,owl-cmu: convert to YAML Date: Thu, 14 Nov 2024 09:26:00 +0200 Message-ID: <20241114072601.265011-1-ivo.ivanov.ivanov1@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241113_232608_320949_019097C2 X-CRM114-Status: GOOD ( 19.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Convert the Actions Semi Owl CMU bindings to DT schema. Changes during conversion: - Since all Actions Semi Owl SoCs utilize the internal low frequency oscillator as a parent for some clocks, require it. Signed-off-by: Ivaylo Ivanov Reviewed-by: Conor Dooley Reviewed-by: Krzysztof Kozlowski Acked-by: Manivannan Sadhasivam --- v4: change double : to a single one in description v4: add tags from Dooley, Kozlowski and Sadhasivam v3: list the headers in the description v3: match properties: order with required: v3: add clocks as a required property v3: drop unused example node label v3: use the preferred four-space indentation for dts example v2: drop address and size cells from example --- .../bindings/clock/actions,owl-cmu.txt | 52 ---------------- .../bindings/clock/actions,owl-cmu.yaml | 60 +++++++++++++++++++ MAINTAINERS | 2 +- 3 files changed, 61 insertions(+), 53 deletions(-) delete mode 100644 Documentation/devicetree/bindings/clock/actions,owl-cmu.txt create mode 100644 Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml diff --git a/Documentation/devicetree/bindings/clock/actions,owl-cmu.txt b/Documentation/devicetree/bindings/clock/actions,owl-cmu.txt deleted file mode 100644 index d19885b7c..000000000 --- a/Documentation/devicetree/bindings/clock/actions,owl-cmu.txt +++ /dev/null @@ -1,52 +0,0 @@ -* Actions Semi Owl Clock Management Unit (CMU) - -The Actions Semi Owl Clock Management Unit generates and supplies clock -to various controllers within the SoC. The clock binding described here is -applicable to S900, S700 and S500 SoC's. - -Required Properties: - -- compatible: should be one of the following, - "actions,s900-cmu" - "actions,s700-cmu" - "actions,s500-cmu" -- reg: physical base address of the controller and length of memory mapped - region. -- clocks: Reference to the parent clocks ("hosc", "losc") -- #clock-cells: should be 1. -- #reset-cells: should be 1. - -Each clock is assigned an identifier, and client nodes can use this identifier -to specify the clock which they consume. - -All available clocks are defined as preprocessor macros in corresponding -dt-bindings/clock/actions,s900-cmu.h or actions,s700-cmu.h or -actions,s500-cmu.h header and can be used in device tree sources. - -External clocks: - -The hosc clock used as input for the plls is generated outside the SoC. It is -expected that it is defined using standard clock bindings as "hosc". - -Actions Semi S900 CMU also requires one more clock: - - "losc" - internal low frequency oscillator - -Example: Clock Management Unit node: - - cmu: clock-controller@e0160000 { - compatible = "actions,s900-cmu"; - reg = <0x0 0xe0160000 0x0 0x1000>; - clocks = <&hosc>, <&losc>; - #clock-cells = <1>; - #reset-cells = <1>; - }; - -Example: UART controller node that consumes clock generated by the clock -management unit: - - uart: serial@e012a000 { - compatible = "actions,s900-uart", "actions,owl-uart"; - reg = <0x0 0xe012a000 0x0 0x2000>; - interrupts = ; - clocks = <&cmu CLK_UART5>; - }; diff --git a/Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml b/Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml new file mode 100644 index 000000000..28396441b --- /dev/null +++ b/Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/actions,owl-cmu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Actions Semi Owl Clock Management Unit (CMU) + +maintainers: + - Manivannan Sadhasivam + +description: | + The Actions Semi Owl Clock Management Unit generates and supplies clock + to various controllers within the SoC. + + See also: + include/dt-bindings/clock/actions,s500-cmu.h + include/dt-bindings/clock/actions,s700-cmu.h + include/dt-bindings/clock/actions,s900-cmu.h + +properties: + compatible: + enum: + - actions,s500-cmu + - actions,s700-cmu + - actions,s900-cmu + + reg: + maxItems: 1 + + clocks: + items: + - description: Host oscillator source + - description: Internal low frequency oscillator source + + "#clock-cells": + const: 1 + + "#reset-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - "#clock-cells" + - "#reset-cells" + +additionalProperties: false + +examples: + - | + clock-controller@e0160000 { + compatible = "actions,s900-cmu"; + reg = <0xe0160000 0x1000>; + clocks = <&hosc>, <&losc>; + #clock-cells = <1>; + #reset-cells = <1>; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 420d06d37..652c9822a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2016,7 +2016,7 @@ L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: linux-actions@lists.infradead.org (moderated for non-subscribers) S: Maintained F: Documentation/devicetree/bindings/arm/actions.yaml -F: Documentation/devicetree/bindings/clock/actions,owl-cmu.txt +F: Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml F: Documentation/devicetree/bindings/dma/owl-dma.yaml F: Documentation/devicetree/bindings/i2c/i2c-owl.yaml F: Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.yaml