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[81.204.249.205]) by smtp.gmail.com with ESMTPSA id bp8-20020a170907918800b006e0daaa63ddsm2169557ejb.60.2022.04.02.07.36.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Apr 2022 07:36:45 -0700 (PDT) From: Johan Jonker To: heiko@sntech.de, zhangqing@rock-chips.com Cc: robh+dt@kernel.org, krzk+dt@kernel.org, mturquette@baylibre.com, sboyd@kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 02/16] dt-bindings: clock: convert rockchip, rk3036-cru.txt to YAML Date: Sat, 2 Apr 2022 16:36:22 +0200 Message-Id: <20220402143636.15222-3-jbx6244@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220402143636.15222-1-jbx6244@gmail.com> References: <20220402143636.15222-1-jbx6244@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220402_073648_510907_E2EE4578 X-CRM114-Status: GOOD ( 20.09 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Convert rockchip,rk3036-cru.txt to YAML. Changes against original bindings: Add clocks and clock-names because the device has to have at least one input clock. Signed-off-by: Johan Jonker --- Changed V4: add more clocks add clocks to example add clocks requirement --- .../bindings/clock/rockchip,rk3036-cru.txt | 56 ------------- .../bindings/clock/rockchip,rk3036-cru.yaml | 80 +++++++++++++++++++ 2 files changed, 80 insertions(+), 56 deletions(-) delete mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt create mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt deleted file mode 100644 index 20df350b9..000000000 --- a/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt +++ /dev/null @@ -1,56 +0,0 @@ -* Rockchip RK3036 Clock and Reset Unit - -The RK3036 clock controller generates and supplies clock to various -controllers within the SoC and also implements a reset controller for SoC -peripherals. - -Required Properties: - -- compatible: should be "rockchip,rk3036-cru" -- reg: physical base address of the controller and length of memory mapped - region. -- #clock-cells: should be 1. -- #reset-cells: should be 1. - -Optional Properties: - -- rockchip,grf: phandle to the syscon managing the "general register files" - If missing pll rates are not changeable, due to the missing pll lock status. - -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 the dt-bindings/clock/rk3036-cru.h headers and can be -used in device tree sources. Similar macros exist for the reset sources in -these files. - -External clocks: - -There are several clocks that are generated outside the SoC. It is expected -that they are defined using standard clock bindings with following -clock-output-names: - - "xin24m" - crystal input - required, - - "ext_i2s" - external I2S clock - optional, - - "rmii_clkin" - external EMAC clock - optional - -Example: Clock controller node: - - cru: cru@20000000 { - compatible = "rockchip,rk3036-cru"; - reg = <0x20000000 0x1000>; - rockchip,grf = <&grf>; - - #clock-cells = <1>; - #reset-cells = <1>; - }; - -Example: UART controller node that consumes the clock generated by the clock - controller: - - uart0: serial@20060000 { - compatible = "snps,dw-apb-uart"; - reg = <0x20060000 0x100>; - interrupts = ; - reg-shift = <2>; - reg-io-width = <4>; - clocks = <&cru SCLK_UART0>; - }; diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml b/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml new file mode 100644 index 000000000..121b298a6 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml @@ -0,0 +1,80 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/rockchip,rk3036-cru.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip RK3036 Clock and Reset Unit (CRU) + +maintainers: + - Elaine Zhang + - Heiko Stuebner + +description: | + The RK3036 clock controller generates and supplies clocks to various + controllers within the SoC and also implements a reset controller for SoC + peripherals. + 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 the dt-bindings/clock/rk3036-cru.h headers and can be + used in device tree sources. Similar macros exist for the reset sources in + these files. + There are several clocks that are generated outside the SoC. It is expected + that they are defined using standard clock bindings with the + clock-output-names defined in this schema. + +properties: + compatible: + enum: + - rockchip,rk3036-cru + + reg: + maxItems: 1 + + clocks: + minItems: 1 + maxItems: 3 + + clock-names: + minItems: 1 + maxItems: 3 + items: + enum: + - xin24m + - ext_i2s + - rmii_clkin + + rockchip,grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the "general register files" (GRF), + if missing pll rates are not changeable, due to the missing pll + lock status. + + "#clock-cells": + const: 1 + + "#reset-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - "#clock-cells" + - "#reset-cells" + +additionalProperties: false + +examples: + - | + cru: clock-controller@20000000 { + compatible = "rockchip,rk3036-cru"; + reg = <0x20000000 0x1000>; + clocks = <&xin24m>; + clock-names = "xin24m"; + rockchip,grf = <&grf>; + #clock-cells = <1>; + #reset-cells = <1>; + };