| Message ID | 20210810093145.26153-6-krzysztof.kozlowski@canonical.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | dt-bindings: clock: samsung: convert to dtschema | expand |
On Tue, Aug 10, 2021 at 11:31:42AM +0200, Krzysztof Kozlowski wrote: > Merge Exynos4210 and Exynos4412 clock controller bindings to existing DT > schema. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> > --- > .../bindings/clock/exynos4-clock.txt | 86 ------------------- > .../bindings/clock/samsung,exynos-clock.yaml | 29 ++++++- > 2 files changed, 28 insertions(+), 87 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/clock/exynos4-clock.txt > > diff --git a/Documentation/devicetree/bindings/clock/exynos4-clock.txt b/Documentation/devicetree/bindings/clock/exynos4-clock.txt > deleted file mode 100644 > index 17bb11365354..000000000000 > --- a/Documentation/devicetree/bindings/clock/exynos4-clock.txt > +++ /dev/null > @@ -1,86 +0,0 @@ > -* Samsung Exynos4 Clock Controller > - > -The Exynos4 clock controller generates and supplies clock to various controllers > -within the Exynos4 SoC. The clock binding described here is applicable to all > -SoC's in the Exynos4 family. > - > -Required Properties: > - > -- compatible: should be one of the following. > - - "samsung,exynos4210-clock" - controller compatible with Exynos4210 SoC. > - - "samsung,exynos4412-clock" - controller compatible with Exynos4412 SoC. > - > -- reg: physical base address of the controller and length of memory mapped > - region. > - > -- #clock-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 > -dt-bindings/clock/exynos4.h header and can be used in device > -tree sources. > - > -Example 1: An example of a clock controller node is listed below. > - > - clock: clock-controller@10030000 { > - compatible = "samsung,exynos4210-clock"; > - reg = <0x10030000 0x20000>; > - #clock-cells = <1>; > - }; > - > -Example 2: UART controller node that consumes the clock generated by the clock > - controller. Refer to the standard clock bindings for information > - about 'clocks' and 'clock-names' property. > - > - serial@13820000 { > - compatible = "samsung,exynos4210-uart"; > - reg = <0x13820000 0x100>; > - interrupts = <0 54 0>; > - clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>; > - clock-names = "uart", "clk_uart_baud0"; > - }; > - > -Exynos4412 SoC contains some additional clocks for FIMC-ISP (Camera ISP) > -subsystem. Registers for those clocks are located in the ISP power domain. > -Because those registers are also located in a different memory region than > -the main clock controller, a separate clock controller has to be defined for > -handling them. > - > -Required Properties: > - > -- compatible: should be "samsung,exynos4412-isp-clock". > - > -- reg: physical base address of the ISP clock controller and length of memory > - mapped region. > - > -- #clock-cells: should be 1. > - > -- clocks: list of the clock controller input clock identifiers, > - from common clock bindings, should point to CLK_ACLK200 and > - CLK_ACLK400_MCUISP clocks from the main clock controller. > - > -- clock-names: list of the clock controller input clock names, > - as described in clock-bindings.txt, should be "aclk200" and > - "aclk400_mcuisp". > - > -- power-domains: a phandle to ISP power domain node as described by > - generic PM domain bindings. > - > -Example 3: The clock controllers bindings for Exynos4412 SoCs. > - > - clock: clock-controller@10030000 { > - compatible = "samsung,exynos4412-clock"; > - reg = <0x10030000 0x18000>; > - #clock-cells = <1>; > - }; > - > - isp_clock: clock-controller@10048000 { > - compatible = "samsung,exynos4412-isp-clock"; > - reg = <0x10048000 0x1000>; > - #clock-cells = <1>; > - power-domains = <&pd_isp>; > - clocks = <&clock CLK_ACLK200>, <&clock CLK_ACLK400_MCUISP>; > - clock-names = "aclk200", "aclk400_mcuisp"; > - }; > diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml > index c7b07fcd3fa1..ea73201f259b 100644 > --- a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml > +++ b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml > @@ -23,6 +23,9 @@ properties: > - samsung,exynos3250-cmu > - samsung,exynos3250-cmu-dmc > - samsung,exynos3250-cmu-isp > + - samsung,exynos4210-clock > + - samsung,exynos4412-clock > + - samsung,exynos4412-isp-clock > - samsung,exynos5250-clock > - samsung,exynos5420-clock > - samsung,exynos5800-clock > @@ -35,11 +38,18 @@ properties: > assigned-clocks: true > assigned-clock-parents: true > assigned-clock-rates: true > - clocks: true > + clocks: > + description: | > + For samsung,exynos4412-isp-clock, the input clocks should be CLK_ACLK200 > + and CLK_ACLK400_MCUISP from the main clock controller. > + > + clock-names: true > > "#clock-cells": > const: 1 > > + power-domains: true > + How many? Now all the flavors can have a power domain? Maybe this should be a separate binding given this and the if/then below. > reg: > maxItems: 1 > > @@ -50,6 +60,23 @@ required: > > additionalProperties: false > > +allOf: > + - if: > + properties: > + compatible: > + contains: > + const: samsung,exynos4412-isp-clock > + then: > + properties: > + clock-names: > + items: > + - const: aclk200 > + - const: aclk400_mcuisp > + required: > + - clocks > + - clock-names > + - power-domains > + > examples: > - | > #include <dt-bindings/clock/exynos5250.h> > -- > 2.30.2 > >
On 17/08/2021 22:24, Rob Herring wrote: > On Tue, Aug 10, 2021 at 11:31:42AM +0200, Krzysztof Kozlowski wrote: >> Merge Exynos4210 and Exynos4412 clock controller bindings to existing DT >> schema. >> >> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> >> --- >> .../bindings/clock/exynos4-clock.txt | 86 ------------------- >> .../bindings/clock/samsung,exynos-clock.yaml | 29 ++++++- >> 2 files changed, 28 insertions(+), 87 deletions(-) >> delete mode 100644 Documentation/devicetree/bindings/clock/exynos4-clock.txt >> >> diff --git a/Documentation/devicetree/bindings/clock/exynos4-clock.txt b/Documentation/devicetree/bindings/clock/exynos4-clock.txt >> deleted file mode 100644 >> index 17bb11365354..000000000000 >> --- a/Documentation/devicetree/bindings/clock/exynos4-clock.txt >> +++ /dev/null >> @@ -1,86 +0,0 @@ >> -* Samsung Exynos4 Clock Controller >> - >> -The Exynos4 clock controller generates and supplies clock to various controllers >> -within the Exynos4 SoC. The clock binding described here is applicable to all >> -SoC's in the Exynos4 family. >> - >> -Required Properties: >> - >> -- compatible: should be one of the following. >> - - "samsung,exynos4210-clock" - controller compatible with Exynos4210 SoC. >> - - "samsung,exynos4412-clock" - controller compatible with Exynos4412 SoC. >> - >> -- reg: physical base address of the controller and length of memory mapped >> - region. >> - >> -- #clock-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 >> -dt-bindings/clock/exynos4.h header and can be used in device >> -tree sources. >> - >> -Example 1: An example of a clock controller node is listed below. >> - >> - clock: clock-controller@10030000 { >> - compatible = "samsung,exynos4210-clock"; >> - reg = <0x10030000 0x20000>; >> - #clock-cells = <1>; >> - }; >> - >> -Example 2: UART controller node that consumes the clock generated by the clock >> - controller. Refer to the standard clock bindings for information >> - about 'clocks' and 'clock-names' property. >> - >> - serial@13820000 { >> - compatible = "samsung,exynos4210-uart"; >> - reg = <0x13820000 0x100>; >> - interrupts = <0 54 0>; >> - clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>; >> - clock-names = "uart", "clk_uart_baud0"; >> - }; >> - >> -Exynos4412 SoC contains some additional clocks for FIMC-ISP (Camera ISP) >> -subsystem. Registers for those clocks are located in the ISP power domain. >> -Because those registers are also located in a different memory region than >> -the main clock controller, a separate clock controller has to be defined for >> -handling them. >> - >> -Required Properties: >> - >> -- compatible: should be "samsung,exynos4412-isp-clock". >> - >> -- reg: physical base address of the ISP clock controller and length of memory >> - mapped region. >> - >> -- #clock-cells: should be 1. >> - >> -- clocks: list of the clock controller input clock identifiers, >> - from common clock bindings, should point to CLK_ACLK200 and >> - CLK_ACLK400_MCUISP clocks from the main clock controller. >> - >> -- clock-names: list of the clock controller input clock names, >> - as described in clock-bindings.txt, should be "aclk200" and >> - "aclk400_mcuisp". >> - >> -- power-domains: a phandle to ISP power domain node as described by >> - generic PM domain bindings. >> - >> -Example 3: The clock controllers bindings for Exynos4412 SoCs. >> - >> - clock: clock-controller@10030000 { >> - compatible = "samsung,exynos4412-clock"; >> - reg = <0x10030000 0x18000>; >> - #clock-cells = <1>; >> - }; >> - >> - isp_clock: clock-controller@10048000 { >> - compatible = "samsung,exynos4412-isp-clock"; >> - reg = <0x10048000 0x1000>; >> - #clock-cells = <1>; >> - power-domains = <&pd_isp>; >> - clocks = <&clock CLK_ACLK200>, <&clock CLK_ACLK400_MCUISP>; >> - clock-names = "aclk200", "aclk400_mcuisp"; >> - }; >> diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml >> index c7b07fcd3fa1..ea73201f259b 100644 >> --- a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml >> +++ b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml >> @@ -23,6 +23,9 @@ properties: >> - samsung,exynos3250-cmu >> - samsung,exynos3250-cmu-dmc >> - samsung,exynos3250-cmu-isp >> + - samsung,exynos4210-clock >> + - samsung,exynos4412-clock >> + - samsung,exynos4412-isp-clock >> - samsung,exynos5250-clock >> - samsung,exynos5420-clock >> - samsung,exynos5800-clock >> @@ -35,11 +38,18 @@ properties: >> assigned-clocks: true >> assigned-clock-parents: true >> assigned-clock-rates: true >> - clocks: true >> + clocks: >> + description: | >> + For samsung,exynos4412-isp-clock, the input clocks should be CLK_ACLK200 >> + and CLK_ACLK400_MCUISP from the main clock controller. >> + >> + clock-names: true >> >> "#clock-cells": >> const: 1 >> >> + power-domains: true >> + > > How many? I'll add it. > > Now all the flavors can have a power domain? Maybe this should be a > separate binding given this and the if/then below. If you ask about the hardware specifically - almost all flavors could have a power domain. There are actually several clock controllers in every SoC responsible for different parts (e.g. display, GPU, audio, video encoder) and most of them could have a power domain. However the clock controller bindings and drivers for all ARMv7 Exynos SoCs were designed as one device with one device node. Inside the driver spawns sub-controllers but still there is one device node. Therefore the answer, if you ask about bindings and hardware-driver model, is that only some of the flavors will have a power domain. If you think that having to separate bindings, without that "allOf: if:" below, is simpler then I can split it. > >> reg: >> maxItems: 1 >> >> @@ -50,6 +60,23 @@ required: >> >> additionalProperties: false >> >> +allOf: >> + - if: >> + properties: >> + compatible: >> + contains: >> + const: samsung,exynos4412-isp-clock >> + then: >> + properties: >> + clock-names: >> + items: >> + - const: aclk200 >> + - const: aclk400_mcuisp >> + required: >> + - clocks >> + - clock-names >> + - power-domains >> + >> examples: >> - | >> #include <dt-bindings/clock/exynos5250.h> >> -- >> 2.30.2 >> >> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/clock/exynos4-clock.txt b/Documentation/devicetree/bindings/clock/exynos4-clock.txt deleted file mode 100644 index 17bb11365354..000000000000 --- a/Documentation/devicetree/bindings/clock/exynos4-clock.txt +++ /dev/null @@ -1,86 +0,0 @@ -* Samsung Exynos4 Clock Controller - -The Exynos4 clock controller generates and supplies clock to various controllers -within the Exynos4 SoC. The clock binding described here is applicable to all -SoC's in the Exynos4 family. - -Required Properties: - -- compatible: should be one of the following. - - "samsung,exynos4210-clock" - controller compatible with Exynos4210 SoC. - - "samsung,exynos4412-clock" - controller compatible with Exynos4412 SoC. - -- reg: physical base address of the controller and length of memory mapped - region. - -- #clock-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 -dt-bindings/clock/exynos4.h header and can be used in device -tree sources. - -Example 1: An example of a clock controller node is listed below. - - clock: clock-controller@10030000 { - compatible = "samsung,exynos4210-clock"; - reg = <0x10030000 0x20000>; - #clock-cells = <1>; - }; - -Example 2: UART controller node that consumes the clock generated by the clock - controller. Refer to the standard clock bindings for information - about 'clocks' and 'clock-names' property. - - serial@13820000 { - compatible = "samsung,exynos4210-uart"; - reg = <0x13820000 0x100>; - interrupts = <0 54 0>; - clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>; - clock-names = "uart", "clk_uart_baud0"; - }; - -Exynos4412 SoC contains some additional clocks for FIMC-ISP (Camera ISP) -subsystem. Registers for those clocks are located in the ISP power domain. -Because those registers are also located in a different memory region than -the main clock controller, a separate clock controller has to be defined for -handling them. - -Required Properties: - -- compatible: should be "samsung,exynos4412-isp-clock". - -- reg: physical base address of the ISP clock controller and length of memory - mapped region. - -- #clock-cells: should be 1. - -- clocks: list of the clock controller input clock identifiers, - from common clock bindings, should point to CLK_ACLK200 and - CLK_ACLK400_MCUISP clocks from the main clock controller. - -- clock-names: list of the clock controller input clock names, - as described in clock-bindings.txt, should be "aclk200" and - "aclk400_mcuisp". - -- power-domains: a phandle to ISP power domain node as described by - generic PM domain bindings. - -Example 3: The clock controllers bindings for Exynos4412 SoCs. - - clock: clock-controller@10030000 { - compatible = "samsung,exynos4412-clock"; - reg = <0x10030000 0x18000>; - #clock-cells = <1>; - }; - - isp_clock: clock-controller@10048000 { - compatible = "samsung,exynos4412-isp-clock"; - reg = <0x10048000 0x1000>; - #clock-cells = <1>; - power-domains = <&pd_isp>; - clocks = <&clock CLK_ACLK200>, <&clock CLK_ACLK400_MCUISP>; - clock-names = "aclk200", "aclk400_mcuisp"; - }; diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml index c7b07fcd3fa1..ea73201f259b 100644 --- a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml +++ b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml @@ -23,6 +23,9 @@ properties: - samsung,exynos3250-cmu - samsung,exynos3250-cmu-dmc - samsung,exynos3250-cmu-isp + - samsung,exynos4210-clock + - samsung,exynos4412-clock + - samsung,exynos4412-isp-clock - samsung,exynos5250-clock - samsung,exynos5420-clock - samsung,exynos5800-clock @@ -35,11 +38,18 @@ properties: assigned-clocks: true assigned-clock-parents: true assigned-clock-rates: true - clocks: true + clocks: + description: | + For samsung,exynos4412-isp-clock, the input clocks should be CLK_ACLK200 + and CLK_ACLK400_MCUISP from the main clock controller. + + clock-names: true "#clock-cells": const: 1 + power-domains: true + reg: maxItems: 1 @@ -50,6 +60,23 @@ required: additionalProperties: false +allOf: + - if: + properties: + compatible: + contains: + const: samsung,exynos4412-isp-clock + then: + properties: + clock-names: + items: + - const: aclk200 + - const: aclk400_mcuisp + required: + - clocks + - clock-names + - power-domains + examples: - | #include <dt-bindings/clock/exynos5250.h>
Merge Exynos4210 and Exynos4412 clock controller bindings to existing DT schema. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> --- .../bindings/clock/exynos4-clock.txt | 86 ------------------- .../bindings/clock/samsung,exynos-clock.yaml | 29 ++++++- 2 files changed, 28 insertions(+), 87 deletions(-) delete mode 100644 Documentation/devicetree/bindings/clock/exynos4-clock.txt