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Message-ID: <4e69a06d-7b53-ab48-1e50-2b29ff3a54e6@gmail.com>
Date: Sun, 18 Sep 2022 16:29:41 +0200
From: Johan Jonker <jbx6244@...il.com>
To: heiko@...ech.de
Cc: zhangqing@...k-chips.com, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, sboyd@...nel.org,
mturquette@...libre.com, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3] dt-bindings: clock: convert rockchip,rk3128-cru.txt to
YAML
Convert rockchip,rk3128-cru.txt to YAML.
Signed-off-by: Johan Jonker <jbx6244@...il.com>
---
Changed V3:
Fix xin24m clock-names position
Changed V2:
Use SPDX-License-Identifier: (GPL-2.0+ OR MIT)
Add more clocks
---
Rockchip recently replied on other clock-patches to dual-license the
binding.
https://lore.kernel.org/all/510d1180-bc8e-7820-c772-ed7f35447087@rock-chips.com/
>From Finley with an @rock-chips.com address, so this should be ok.
Document history:
git log Documentation/devicetree/bindings/clock/*rk312*.txt
Author: Elaine Zhang <zhangqing@...k-chips.com>
dt-bindings: add documentation for rk3126 clock
Author: Elaine Zhang <zhangqing@...k-chips.com>
dt-bindings: add bindings for rk3128 clock controller
---
.../bindings/clock/rockchip,rk3128-cru.txt | 58 --------------
.../bindings/clock/rockchip,rk3128-cru.yaml | 76 +++++++++++++++++++
2 files changed, 76 insertions(+), 58 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.txt
create mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.yaml
diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.txt
deleted file mode 100644
index 6f8744fd301b..000000000000
--- a/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.txt
+++ /dev/null
@@ -1,58 +0,0 @@
-* Rockchip RK3126/RK3128 Clock and Reset Unit
-
-The RK3126/RK3128 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,rk3126-cru" or "rockchip,rk3128-cru"
- "rockchip,rk3126-cru" - controller compatible with RK3126 SoC.
- "rockchip,rk3128-cru" - controller compatible with RK3128 SoC.
-- 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/rk3128-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,
- - "gmac_clkin" - external GMAC clock - optional
-
-Example: Clock controller node:
-
- cru: cru@...00000 {
- compatible = "rockchip,rk3128-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:
-
- uart2: serial@...68000 {
- compatible = "rockchip,serial";
- reg = <0x20068000 0x100>;
- interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
- clock-frequency = <24000000>;
- clocks = <&cru SCLK_UART2>, <&cru PCLK_UART2>;
- clock-names = "sclk_uart", "pclk_uart";
- };
diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.yaml b/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.yaml
new file mode 100644
index 000000000000..b3d9c8eca989
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/rockchip,rk3128-cru.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/rockchip,rk3128-cru.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip RK3126/RK3128 Clock and Reset Unit (CRU)
+
+maintainers:
+ - Elaine Zhang <zhangqing@...k-chips.com>
+ - Heiko Stuebner <heiko@...ech.de>
+
+description: |
+ The RK3126/RK3128 clock controller generates and supplies clock 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/rk3128-cru.h headers and can be
+ used in device tree sources. Similar macros exist for the reset sources in
+ these files.
+
+properties:
+ compatible:
+ enum:
+ - rockchip,rk3126-cru
+ - rockchip,rk3128-cru
+
+ reg:
+ maxItems: 1
+
+ "#clock-cells":
+ const: 1
+
+ "#reset-cells":
+ const: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 3
+
+ clock-names:
+ minItems: 1
+ items:
+ - const: xin24m
+ - enum:
+ - ext_i2s
+ - gmac_clkin
+ - enum:
+ - ext_i2s
+ - gmac_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.
+
+required:
+ - compatible
+ - reg
+ - "#clock-cells"
+ - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ cru: clock-controller@...00000 {
+ compatible = "rockchip,rk3128-cru";
+ reg = <0x20000000 0x1000>;
+ rockchip,grf = <&grf>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
--
2.20.1
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