From: "Rob Herring (Arm)" <robh@kernel.org>
To: Avi Fishman <avifishman70@gmail.com>,
Tomer Maimon <tmaimon77@gmail.com>,
Tali Perry <tali.perry1@gmail.com>,
Patrick Venture <venture@google.com>,
Nancy Yuen <yuenn@google.com>,
Benjamin Fair <benjaminfair@google.com>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: openbmc@lists.ozlabs.org, linux-clk@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] dt-bindings: clock: Convert nuvoton,npcm750-clk to DT schema
Date: Mon, 30 Jun 2025 18:26:36 -0500 [thread overview]
Message-ID: <20250630232637.3700584-1-robh@kernel.org> (raw)
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
.../bindings/clock/nuvoton,npcm750-clk.txt | 100 ------------------
.../bindings/clock/nuvoton,npcm750-clk.yaml | 66 ++++++++++++
2 files changed, 66 insertions(+), 100 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.txt
create mode 100644 Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.yaml
diff --git a/Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.txt b/Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.txt
deleted file mode 100644
index f82064546d11..000000000000
--- a/Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.txt
+++ /dev/null
@@ -1,100 +0,0 @@
-* Nuvoton NPCM7XX Clock Controller
-
-Nuvoton Poleg BMC NPCM7XX contains an integrated clock controller, which
-generates and supplies clocks to all modules within the BMC.
-
-External clocks:
-
-There are six fixed clocks that are generated outside the BMC. All clocks are of
-a known fixed value that cannot be changed. clk_refclk, clk_mcbypck and
-clk_sysbypck are inputs to the clock controller.
-clk_rg1refck, clk_rg2refck and clk_xin are external clocks suppling the
-network. They are set on the device tree, but not used by the clock module. The
-network devices use them directly.
-Example can be found below.
-
-All available clocks are defined as preprocessor macros in:
-dt-bindings/clock/nuvoton,npcm7xx-clock.h
-and can be reused as DT sources.
-
-Required Properties of clock controller:
-
- - compatible: "nuvoton,npcm750-clk" : for clock controller of Nuvoton
- Poleg BMC NPCM750
-
- - reg: physical base address of the clock controller and length of
- memory mapped region.
-
- - #clock-cells: should be 1.
-
-Example: Clock controller node:
-
- clk: clock-controller@f0801000 {
- compatible = "nuvoton,npcm750-clk";
- #clock-cells = <1>;
- reg = <0xf0801000 0x1000>;
- clock-names = "refclk", "sysbypck", "mcbypck";
- clocks = <&clk_refclk>, <&clk_sysbypck>, <&clk_mcbypck>;
- };
-
-Example: Required external clocks for network:
-
- /* external reference clock */
- clk_refclk: clk-refclk {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <25000000>;
- clock-output-names = "refclk";
- };
-
- /* external reference clock for cpu. float in normal operation */
- clk_sysbypck: clk-sysbypck {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <800000000>;
- clock-output-names = "sysbypck";
- };
-
- /* external reference clock for MC. float in normal operation */
- clk_mcbypck: clk-mcbypck {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <800000000>;
- clock-output-names = "mcbypck";
- };
-
- /* external clock signal rg1refck, supplied by the phy */
- clk_rg1refck: clk-rg1refck {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <125000000>;
- clock-output-names = "clk_rg1refck";
- };
-
- /* external clock signal rg2refck, supplied by the phy */
- clk_rg2refck: clk-rg2refck {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <125000000>;
- clock-output-names = "clk_rg2refck";
- };
-
- clk_xin: clk-xin {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <50000000>;
- clock-output-names = "clk_xin";
- };
-
-
-Example: GMAC controller node that consumes two clocks: a generated clk by the
-clock controller and a fixed clock from DT (clk_rg1refck).
-
- ethernet0: ethernet@f0802000 {
- compatible = "snps,dwmac";
- reg = <0xf0802000 0x2000>;
- interrupts = <0 14 4>;
- interrupt-names = "macirq";
- clocks = <&clk_rg1refck>, <&clk NPCM7XX_CLK_AHB>;
- clock-names = "stmmaceth", "clk_gmac";
- };
diff --git a/Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.yaml b/Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.yaml
new file mode 100644
index 000000000000..694dac68619c
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/nuvoton,npcm750-clk.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/nuvoton,npcm750-clk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton NPCM7XX Clock Controller
+
+maintainers:
+ - Tali Perry <tali.perry1@gmail.com>
+
+description: >
+ Nuvoton Poleg BMC NPCM7XX contains an integrated clock controller, which
+ generates and supplies clocks to all modules within the BMC.
+
+ External clocks:
+
+ There are six fixed clocks that are generated outside the BMC. All clocks are of
+ a known fixed value that cannot be changed. clk_refclk, clk_mcbypck and
+ clk_sysbypck are inputs to the clock controller.
+ clk_rg1refck, clk_rg2refck and clk_xin are external clocks suppling the
+ network. They are set on the device tree, but not used by the clock module. The
+ network devices use them directly.
+
+ All available clocks are defined as preprocessor macros in:
+ dt-bindings/clock/nuvoton,npcm7xx-clock.h
+ and can be reused as DT sources.
+
+properties:
+ compatible:
+ const: nuvoton,npcm750-clk
+
+ reg:
+ maxItems: 1
+
+ '#clock-cells':
+ const: 1
+
+ clock-names:
+ items:
+ - const: refclk
+ - const: sysbypck
+ - const: mcbypck
+
+ clocks:
+ items:
+ - description: refclk
+ - description: sysbypck
+ - description: mcbypck
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ clock-controller@f0801000 {
+ compatible = "nuvoton,npcm750-clk";
+ #clock-cells = <1>;
+ reg = <0xf0801000 0x1000>;
+ clock-names = "refclk", "sysbypck", "mcbypck";
+ clocks = <&clk_refclk>, <&clk_sysbypck>, <&clk_mcbypck>;
+ };
--
2.47.2
next reply other threads:[~2025-06-30 23:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-30 23:26 Rob Herring (Arm) [this message]
2025-07-24 21:18 ` [PATCH] dt-bindings: clock: Convert nuvoton,npcm750-clk to DT schema Stephen Boyd
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