Add thermal control driver for Sunplus SP7021 SoC

This is a patch series for thermal driver for Sunplus SP7021 SoC.

Sunplus SP7021 is an ARM Cortex A7 (4 cores) based SoC. It integrates many peripherals (ex: UART, I2C, SPI, SDIO, eMMC, USB, SD card and etc.) into a single chip. It is designed for industrial control.

Li-hao Kuo (2):
thermal: Add thermal driver for Sunplus SP7021
dt-bindings:thermal: Add Sunplus SP7021 schema

 .../bindings/thermal/sunplus-thermal.yaml          |  43 +++++++
 MAINTAINERS                                        |   7 ++
 drivers/thermal/Kconfig                            |  10 ++
 drivers/thermal/Makefile                           |   1 +
 drivers/thermal/sunplus_thermal.c                  | 139 +++++++++++++++++++++
 5 files changed, 200 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/sunplus-thermal.yaml
 create mode 100644 drivers/thermal/sunplus_thermal.c

2.7.4

Add thermal driver for Sunplus SP7021.

---
Changes in v6:
- Modify yaml file.
- Addressed comments from Mr. Krzysztof Kozlowski

 MAINTAINERS                       |   6 ++
 drivers/thermal/Kconfig           |  10 +++
 drivers/thermal/Makefile          |   1 +
 drivers/thermal/sunplus_thermal.c | 139 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 156 insertions(+)
 create mode 100644 drivers/thermal/sunplus_thermal.c

index 237046f..4096763 100644
@@ -18860,6 +18860,12 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/spi/spi-sunplus-sp7021.yaml
 F:	drivers/spi/spi-sunplus-sp7021.c
 
+SUNPLUS THERMAL DRIVER
+M:	Li-hao Kuo <[email protected]>
+L:	[email protected]
+S:	Maintained
+F:	drivers/thermal/sunplus_thermal.c
+
 SUNPLUS UART DRIVER
 M:	Hammer Hsieh <[email protected]>
 S:	Maintained

index e37691e..66316c3 100644
@@ -502,4 +502,14 @@ config KHADAS_MCU_FAN_THERMAL
 	  If you say yes here you get support for the FAN controlled
 	  by the Microcontroller found on the Khadas VIM boards.
 
+config SUNPLUS_THERMAL
+	tristate "Sunplus thermal drivers"
+	depends on SOC_SP7021 || COMPILE_TEST
+	help
+	  This the Sunplus SP7021 thermal driver, which supports the primitive
+	  temperature sensor embedded in Sunplus SP7021 SoC.
+
+	  If you have a Sunplus SP7021 platform say Y here and enable this option
+	  to have support for thermal management
+
 endif

index f0c36a1..38a76f9 100644
@@ -61,3 +61,4 @@ obj-$(CONFIG_UNIPHIER_THERMAL)	+= uniphier_thermal.o
 obj-$(CONFIG_AMLOGIC_THERMAL)     += amlogic_thermal.o
 obj-$(CONFIG_SPRD_THERMAL)	+= sprd_thermal.o
 obj-$(CONFIG_KHADAS_MCU_FAN_THERMAL)	+= khadas_mcu_fan.o
+obj-$(CONFIG_SUNPLUS_THERMAL)	+= sunplus_thermal.o

2.7.4

Add bindings for Sunplus SP7021 thermal driver

---
Changes in v6:
- Modify yaml file.
- Addressed comments from Mr. Krzysztof Kozlowski

 .../bindings/thermal/sunplus-thermal.yaml          | 43 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/sunplus-thermal.yaml

new file mode 100644
index 0000000..80d70ff
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/sunplus_thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus Thermal controller
+
+maintainers:
+  - Li-hao Kuo <[email protected]>
+
+properties:
+  compatible:
+    enum:
+      - sunplus,sp7021-thermal
+
+  reg:
+    maxItems: 1
+
+  nvmem-cells:
+    maxItems: 1
+
+  nvmem-cell-names:
+    const: therm_calib
+
+required:
+  - compatible
+  - reg
+  - nvmem-cells
+  - nvmem-cell-names
+
+additionalProperties: false
+
+examples:
+  - |
+    thermal@9c000280 {
+        compatible = "sunplus,sp7021-thermal";
+        reg = <0x9c000280 0xc>;
+        nvmem-cells = <&calib>;
+        nvmem-cell-names = "therm_calib";
+    };
+...

index 4096763..51a94c8 100644
@@ -18864,6 +18864,7 @@ SUNPLUS THERMAL DRIVER
 M:	Li-hao Kuo <[email protected]>
 L:	[email protected]
 S:	Maintained
+F:	Documentation/devicetree/bindings/thermal/sunplus_thermal.yaml
 F:	drivers/thermal/sunplus_thermal.c
 
 SUNPLUS UART DRIVER

2.7.4

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check' on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
./Documentation/devicetree/bindings/thermal/sunplus-thermal.yaml: $id: relative path/filename doesn't match actual path or filename
expected: http://devicetree.org/schemas/thermal/sunplus-thermal.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1610480

This check can fail if there are any dependencies. The base for a patch series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date:

pip3 install dtschema --upgrade

Please check and re-submit.

No, you did not address.

If you think otherwise, please provide some context because I really do not see any change here.

Best regards,
Krzysztof