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Message-ID: <20250521004625.1791913-1-robh@kernel.org>
Date: Tue, 20 May 2025 19:46:24 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
Ray Jui <rjui@...adcom.com>,
Scott Branden <sbranden@...adcom.com>,
Stefan Wahren <wahrenst@....net>
Cc: linux-clk@...r.kernel.org,
devicetree@...r.kernel.org,
linux-rpi-kernel@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: clock: Convert brcm,bcm2835-cprman to DT schema
Convert the Broadcom BCM2835 CPRMAN clock binding to DT schema format.
It's a straight forward conversion.
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
.../bindings/clock/brcm,bcm2835-cprman.txt | 60 -------------------
.../bindings/clock/brcm,bcm2835-cprman.yaml | 58 ++++++++++++++++++
2 files changed, 58 insertions(+), 60 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.yaml
diff --git a/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt b/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
deleted file mode 100644
index 9e0b03a6519b..000000000000
--- a/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
+++ /dev/null
@@ -1,60 +0,0 @@
-Broadcom BCM2835 CPRMAN clocks
-
-This binding uses the common clock binding:
- Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-The CPRMAN clock controller generates clocks in the audio power domain
-of the BCM2835. There is a level of PLLs deriving from an external
-oscillator, a level of PLL dividers that produce channels off of the
-few PLLs, and a level of mostly-generic clock generators sourcing from
-the PLL channels. Most other hardware components source from the
-clock generators, but a few (like the ARM or HDMI) will source from
-the PLL dividers directly.
-
-Required properties:
-- compatible: should be one of the following,
- "brcm,bcm2711-cprman"
- "brcm,bcm2835-cprman"
-- #clock-cells: Should be <1>. The permitted clock-specifier values can be
- found in include/dt-bindings/clock/bcm2835.h
-- reg: Specifies base physical address and size of the registers
-- clocks: phandles to the parent clocks used as input to the module, in
- the following order:
-
- - External oscillator
- - DSI0 byte clock
- - DSI0 DDR2 clock
- - DSI0 DDR clock
- - DSI1 byte clock
- - DSI1 DDR2 clock
- - DSI1 DDR clock
-
- Only external oscillator is required. The DSI clocks may
- not be present, in which case their children will be
- unusable.
-
-Example:
-
- clk_osc: clock@3 {
- compatible = "fixed-clock";
- reg = <3>;
- #clock-cells = <0>;
- clock-output-names = "osc";
- clock-frequency = <19200000>;
- };
-
- clocks: cprman@...01000 {
- compatible = "brcm,bcm2835-cprman";
- #clock-cells = <1>;
- reg = <0x7e101000 0x2000>;
- clocks = <&clk_osc>;
- };
-
- i2c0: i2c@...05000 {
- compatible = "brcm,bcm2835-i2c";
- reg = <0x7e205000 0x1000>;
- interrupts = <2 21>;
- clocks = <&clocks BCM2835_CLOCK_VPU>;
- #address-cells = <1>;
- #size-cells = <0>;
- };
diff --git a/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.yaml b/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.yaml
new file mode 100644
index 000000000000..8586033794ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/brcm,bcm2835-cprman.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM2835 CPRMAN clocks
+
+maintainers:
+ - Stefan Wahren <wahrenst@....net>
+
+description:
+ The CPRMAN clock controller generates clocks in the audio power domain of the
+ BCM2835. There is a level of PLLs deriving from an external oscillator, a
+ level of PLL dividers that produce channels off of the few PLLs, and a level
+ of mostly-generic clock generators sourcing from the PLL channels. Most other
+ hardware components source from the clock generators, but a few (like the ARM
+ or HDMI) will source from the PLL dividers directly.
+
+properties:
+ compatible:
+ enum:
+ - brcm,bcm2711-cprman
+ - brcm,bcm2835-cprman
+
+ reg:
+ maxItems: 1
+
+ '#clock-cells':
+ const: 1
+
+ clocks:
+ minItems: 1
+ items:
+ - description: External oscillator clock.
+ - description: DSI0 byte clock.
+ - description: DSI0 DDR2 clock.
+ - description: DSI0 DDR clock.
+ - description: DSI1 byte clock.
+ - description: DSI1 DDR2 clock.
+ - description: DSI1 DDR clock.
+
+additionalProperties: false
+
+required:
+ - compatible
+ - '#clock-cells'
+ - reg
+ - clocks
+
+examples:
+ - |
+ clock-controller@...01000 {
+ compatible = "brcm,bcm2835-cprman";
+ reg = <0x7e101000 0x2000>;
+ #clock-cells = <1>;
+ clocks = <&clk_osc>;
+ };
--
2.47.2
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