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Message-Id: <20240110-clk-th1520-v1-2-8b0682567984@tenstorrent.com>
Date: Wed, 10 Jan 2024 08:35:16 -0800
From: Drew Fustini <dfustini@...storrent.com>
To: Jisheng Zhang <jszhang@...nel.org>, Guo Ren <guoren@...nel.org>,
Fu Wei <wefu@...hat.com>, Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, Yangtao Li <frank.li@...o.com>
Cc: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
Emil Renner Berthing <emil.renner.berthing@...onical.com>,
Han Gao <gaohan@...as.ac.cn>, Xi Ruoyao <xry111@...111.site>,
Robert Nelson <robertcnelson@...gleboard.org>,
Jason Kridner <jkridner@...gleboard.org>,
Drew Fustini <dfustini@...storrent.com>
Subject: [PATCH RFC 2/3] dt-bindings: clock: Document T-Head TH1520 AP
clock controller
From: Yangtao Li <frank.li@...o.com>
Document devicetree bindings for the T-HEAD TH1520 AP sub-system
clock controller.
Signed-off-by: Yangtao Li <frank.li@...o.com>
[add link to reference manual]
[fixed dt_binding_check warnings]
[revised commit description]
Signed-off-by: Drew Fustini <dfustini@...storrent.com>
---
.../bindings/clock/thead,th1520-clk-ap.yaml | 65 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 66 insertions(+)
diff --git a/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml b/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
new file mode 100644
index 000000000000..53e7802a4ad7
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/thead,th1520-clk-ap.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: T-HEAD TH1520 AP sub-system clock controller
+
+description: |
+ The T-HEAD TH1520 AP sub-system clock controller configures the
+ CPU, DPU, GMAC and TEE PLLs.
+
+ SoC reference manual
+ https://openbeagle.org/beaglev-ahead/beaglev-ahead/-/blob/main/docs/TH1520%20System%20User%20Manual.pdf
+
+maintainers:
+ - Jisheng Zhang <jszhang@...nel.org>
+ - Wei Fu <wefu@...hat.com>
+ - Yangtao Li <frank.li@...o.com>
+
+properties:
+ compatible:
+ const: thead,th1520-clk-ap
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: main oscillator (24MHz)
+
+ clock-names:
+ items:
+ - const: osc
+
+ "#clock-cells":
+ const: 1
+ description:
+ See <dt-bindings/clock/thead,th1520-clk.h> for valid indices.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/thead,th1520-clk.h>
+ soc {
+
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ clk: clock-controller@...f010000 {
+ compatible = "thead,th1520-clk-ap";
+ reg = <0xff 0xef010000 0x0 0x1000>;
+ clocks = <&osc>;
+ clock-names = "osc";
+ #clock-cells = <1>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index a52dbf3c5606..dd2398512fc0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18856,6 +18856,7 @@ M: Guo Ren <guoren@...nel.org>
M: Fu Wei <wefu@...hat.com>
L: linux-riscv@...ts.infradead.org
S: Maintained
+F: Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
F: arch/riscv/boot/dts/thead/
F: include/dt-bindings/clock/thead,th1520-clk.h
--
2.34.1
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