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Message-ID: <20240620054024.43627-2-kanakshilledar@gmail.com>
Date: Thu, 20 Jun 2024 11:10:20 +0530
From: Kanak Shilledar <kanakshilledar@...il.com>
To:
Cc: Kanak Shilledar <kanakshilledar@...il.com>,
Andi Shyti <andi.shyti@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Vladimir Zapolskiy <vz@...ia.com>,
linux-i2c@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2] dt-bindings: i2c: nxp,lpc1788-i2c: convert to dt schema
Convert the NXP I2C controller for LPC2xxx/178x/18xx/43xx
to newer DT schema. Created DT schema based on the .txt file
which had `compatible`, `reg`, `interrupts`, `clocks`,
`#address-cells` and `#size-cells` as required properties.
Additional changes to the original .txt binding
- added maintainer from the MAINTAINERS file.
- added resets property required by the corresponding DTS files.
Signed-off-by: Kanak Shilledar <kanakshilledar@...il.com>
---
Changes in v2:
- updated subject line to include device name.
- changed removed description from properties except `clock-frequency`.
- updated MAINTAINERS to track this file.
---
.../devicetree/bindings/i2c/i2c-lpc2k.txt | 33 -----------
.../bindings/i2c/nxp,lpc1788-i2c.yaml | 56 +++++++++++++++++++
MAINTAINERS | 2 +-
3 files changed, 57 insertions(+), 34 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
create mode 100644 Documentation/devicetree/bindings/i2c/nxp,lpc1788-i2c.yaml
diff --git a/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt b/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
deleted file mode 100644
index 4101aa621ad4..000000000000
--- a/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-NXP I2C controller for LPC2xxx/178x/18xx/43xx
-
-Required properties:
- - compatible: must be "nxp,lpc1788-i2c"
- - reg: physical address and length of the device registers
- - interrupts: a single interrupt specifier
- - clocks: clock for the device
- - #address-cells: should be <1>
- - #size-cells: should be <0>
-
-Optional properties:
-- clock-frequency: the desired I2C bus clock frequency in Hz; in
- absence of this property the default value is used (100 kHz).
-
-Example:
-i2c0: i2c@...a1000 {
- compatible = "nxp,lpc1788-i2c";
- reg = <0x400a1000 0x1000>;
- interrupts = <18>;
- clocks = <&ccu1 CLK_APB1_I2C0>;
- #address-cells = <1>;
- #size-cells = <0>;
-};
-
-&i2c0 {
- clock-frequency = <400000>;
-
- lm75@48 {
- compatible = "nxp,lm75";
- reg = <0x48>;
- };
-};
-
diff --git a/Documentation/devicetree/bindings/i2c/nxp,lpc1788-i2c.yaml b/Documentation/devicetree/bindings/i2c/nxp,lpc1788-i2c.yaml
new file mode 100644
index 000000000000..8caafe48edb6
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/nxp,lpc1788-i2c.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/nxp,lpc1788-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP I2C controller for LPC2xxx/178x/18xx/43xx
+
+maintainers:
+ - Vladimir Zapolskiy <vz@...ia.com>
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+ compatible:
+ const: nxp,lpc1788-i2c
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-frequency:
+ description: the desired I2C bus clock frequency in Hz
+ default: 100000
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - "#address-cells"
+ - "#size-cells"
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include "dt-bindings/clock/lpc18xx-ccu.h"
+
+ i2c@...a1000 {
+ compatible = "nxp,lpc1788-i2c";
+ reg = <0x400a1000 0x1000>;
+ interrupts = <18>;
+ clocks = <&ccu1 CLK_APB1_I2C0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index cf9c9221c388..920e4f28b5ae 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2374,7 +2374,7 @@ ARM/LPC18XX ARCHITECTURE
M: Vladimir Zapolskiy <vz@...ia.com>
L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
S: Maintained
-F: Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
+F: Documentation/devicetree/bindings/i2c/nxp,lpc1788-i2c.yaml
F: arch/arm/boot/dts/nxp/lpc/lpc43*
F: drivers/i2c/busses/i2c-lpc2k.c
F: drivers/memory/pl172.c
--
2.45.2
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