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dt-bindings: clock: samsung: convert Exynos5410 to dtschema
Convert Samsung Exynos5410 SoC clock controller bindings to DT schema format. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220102115356.75796-7-krzysztof.kozlowski@canonical.com
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* Samsung Exynos5410 Clock Controller
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The Exynos5410 clock controller generates and supplies clock to various
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controllers within the Exynos5410 SoC.
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Required Properties:
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- compatible: should be "samsung,exynos5410-clock"
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- reg: physical base address of the controller and length of memory mapped
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region.
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- #clock-cells: should be 1.
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- clocks: should contain an entry specifying the root clock from external
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oscillator supplied through XXTI or XusbXTI pin. This clock should be
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defined using standard clock bindings with "fin_pll" clock-output-name.
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That clock is being passed internally to the 9 PLLs.
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All available clocks are defined as preprocessor macros in
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dt-bindings/clock/exynos5410.h header and can be used in device
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tree sources.
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Example 1: An example of a clock controller node is listed below.
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fin_pll: xxti {
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compatible = "fixed-clock";
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clock-frequency = <24000000>;
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clock-output-names = "fin_pll";
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#clock-cells = <0>;
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};
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clock: clock-controller@10010000 {
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compatible = "samsung,exynos5410-clock";
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reg = <0x10010000 0x30000>;
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#clock-cells = <1>;
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clocks = <&fin_pll>;
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};
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Example 2: UART controller node that consumes the clock generated by the clock
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controller. Refer to the standard clock bindings for information
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about 'clocks' and 'clock-names' property.
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serial@12c20000 {
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compatible = "samsung,exynos4210-uart";
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reg = <0x12C00000 0x100>;
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interrupts = <0 51 0>;
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clocks = <&clock CLK_UART0>, <&clock CLK_SCLK_UART0>;
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clock-names = "uart", "clk_uart_baud0";
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};
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@ -0,0 +1,66 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/clock/samsung,exynos5410-clock.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung Exynos5410 SoC clock controller
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maintainers:
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- Chanwoo Choi <cw00.choi@samsung.com>
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- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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- Sylwester Nawrocki <s.nawrocki@samsung.com>
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- Tomasz Figa <tomasz.figa@gmail.com>
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description: |
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Expected external clocks, defined in DTS as fixed-rate clocks with a matching
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name::
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- "fin_pll" - PLL input clock from XXTI
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All available clocks are defined as preprocessor macros in
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include/dt-bindings/clock/exynos5410.h header.
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properties:
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compatible:
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oneOf:
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- enum:
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- samsung,exynos5410-clock
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clocks:
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description:
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Should contain an entry specifying the root clock from external
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oscillator supplied through XXTI or XusbXTI pin. This clock should be
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defined using standard clock bindings with "fin_pll" clock-output-name.
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That clock is being passed internally to the 9 PLLs.
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maxItems: 1
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"#clock-cells":
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const: 1
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reg:
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maxItems: 1
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required:
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- compatible
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- "#clock-cells"
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/exynos5410.h>
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fin_pll: osc-clock {
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compatible = "fixed-clock";
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clock-frequency = <24000000>;
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clock-output-names = "fin_pll";
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#clock-cells = <0>;
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};
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clock-controller@10010000 {
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compatible = "samsung,exynos5410-clock";
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reg = <0x10010000 0x30000>;
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#clock-cells = <1>;
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clocks = <&fin_pll>;
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};
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@ -16846,7 +16846,6 @@ M: Chanwoo Choi <cw00.choi@samsung.com>
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L: linux-samsung-soc@vger.kernel.org
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L: linux-samsung-soc@vger.kernel.org
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S: Supported
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S: Supported
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk.git
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk.git
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F: Documentation/devicetree/bindings/clock/exynos*.txt
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F: Documentation/devicetree/bindings/clock/samsung,*.yaml
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F: Documentation/devicetree/bindings/clock/samsung,*.yaml
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F: Documentation/devicetree/bindings/clock/samsung,s3c*
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F: Documentation/devicetree/bindings/clock/samsung,s3c*
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F: Documentation/devicetree/bindings/clock/samsung,s5p*
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F: Documentation/devicetree/bindings/clock/samsung,s5p*
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