From: Jacky Huang <[email protected]>
This patch series adds the rtc driver for the nuvoton ma35d1 ARMv8 SoC.
It includes DT binding documentation, the ma35d1 rtc driver, and device
tree updates.
The ma35d1 rtc controller provides real-time and calendar messaging
capabilities. It supports programmable time tick and alarm match
interrupts. The time and calendar messages are expressed in BCD format.
This rtc driver has been tested on the ma35d1 som board with Linux 6.5-rc2.
v2:
- Updated nuvoton,ma35d1-rtc.yaml
- Modified patch title and fixed typo
- Added reference to rtc.yaml
- Used unevaluatedProperties instead of additionalProperties
- Modified rtc driver
- Used dev_err_probe()
- Removed ma35d1_rtc_remove()
- Made other minor fixes
Jacky Huang (3):
dt-bindings: rtc: Add Nuvoton ma35d1 rtc
arm64: dts: nuvoton: Add rtc for ma35d1
rtc: Add driver for Nuvoton ma35d1 rtc controller
.../bindings/rtc/nuvoton,ma35d1-rtc.yaml | 48 +++
.../boot/dts/nuvoton/ma35d1-iot-512m.dts | 4 +
.../boot/dts/nuvoton/ma35d1-som-256m.dts | 4 +
arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 8 +
drivers/rtc/Kconfig | 11 +
drivers/rtc/Makefile | 1 +
drivers/rtc/rtc-ma35d1.c | 355 ++++++++++++++++++
7 files changed, 431 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/nuvoton,ma35d1-rtc.yaml
create mode 100644 drivers/rtc/rtc-ma35d1.c
--
2.34.1
From: Jacky Huang <[email protected]>
Add rtc controller support to the dtsi of ma35d1 SoC and
enable rtc on SOM and IoT boards.
Signed-off-by: Jacky Huang <[email protected]>
---
arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts | 4 ++++
arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts | 4 ++++
arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 8 ++++++++
3 files changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts b/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
index b89e2be6abae..b3be4331abcf 100644
--- a/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
@@ -54,3 +54,7 @@ &clk {
"integer",
"integer";
};
+
+&rtc {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
index a1ebddecb7f8..9858788a589c 100644
--- a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
@@ -54,3 +54,7 @@ &clk {
"integer",
"integer";
};
+
+&rtc {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
index 781cdae566a0..394395bfd3ae 100644
--- a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
@@ -95,6 +95,14 @@ clk: clock-controller@40460200 {
clocks = <&clk_hxt>;
};
+ rtc: rtc@40410000 {
+ compatible = "nuvoton,ma35d1-rtc";
+ reg = <0x0 0x40410000 0x0 0x200>;
+ interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk RTC_GATE>;
+ status = "disabled";
+ };
+
uart0: serial@40700000 {
compatible = "nuvoton,ma35d1-uart";
reg = <0x0 0x40700000 0x0 0x100>;
--
2.34.1
From: Jacky Huang <[email protected]>
Add documentation describing the Nuvoton ma35d1 rtc controller.
Signed-off-by: Jacky Huang <[email protected]>
---
.../bindings/rtc/nuvoton,ma35d1-rtc.yaml | 48 +++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/nuvoton,ma35d1-rtc.yaml
diff --git a/Documentation/devicetree/bindings/rtc/nuvoton,ma35d1-rtc.yaml b/Documentation/devicetree/bindings/rtc/nuvoton,ma35d1-rtc.yaml
new file mode 100644
index 000000000000..5e4ade803eed
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/nuvoton,ma35d1-rtc.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/nuvoton,ma35d1-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton MA35D1 Real Time Clock
+
+maintainers:
+ - Min-Jen Chen <[email protected]>
+
+allOf:
+ - $ref: rtc.yaml#
+
+properties:
+ compatible:
+ enum:
+ - nuvoton,ma35d1-rtc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
+ rtc@40410000 {
+ compatible = "nuvoton,ma35d1-rtc";
+ reg = <0x40410000 0x200>;
+ interrupts = <GIC_SPI 5 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clk RTC_GATE>;
+ };
+
+...
--
2.34.1