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Message-Id: <20210809130935.80565-3-krzysztof.kozlowski@canonical.com>
Date: Mon, 9 Aug 2021 15:09:35 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To: Sylwester Nawrocki <s.nawrocki@...sung.com>,
Tomasz Figa <tomasz.figa@...il.com>,
Chanwoo Choi <cw00.choi@...sung.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] dt-bindings: clock: samsung: convert Exynos4 to dtschema
Merge Exynos4210 and Exynos4412 clock controller bindings to existing DT
schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.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@...30000 {
- 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@...20000 {
- 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@...30000 {
- compatible = "samsung,exynos4412-clock";
- reg = <0x10030000 0x18000>;
- #clock-cells = <1>;
- };
-
- isp_clock: clock-controller@...48000 {
- 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>
--
2.30.2
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