w1: phytium_w1: add Phytium w1 bus master driver

This driver supports for the 1-wire master interface of Phytium.

Signed-off-by: Zhu Mingshuai <[email protected]>
Signed-off-by: Chen Zhenhua <[email protected]>
Signed-off-by: Chen Baozi <[email protected]>
Signed-off-by: Wang Yinfeng <[email protected]>
Signed-off-by: Hu Yeqing <[email protected]>

Documentation/devicetree/bindings/w1/phytium,w1.yaml

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/w1/phytium,w1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Phytium 1-wire bus master controller
+
+maintainers:
+  - Chen Baozi <[email protected]>
+
+properties:
+  compatible:
+    const: phytium,w1
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    onewire0: onewire@2803f000 {
+      compatible = "phytium,w1";
+      reg = <0x0 0x2803f000 0x0 0x1000>;
+      interrupts = <GIC_SPI 166 IRQ_TYPE_LEVEL_HIGH>;
+    };

drivers/w1/masters/Kconfig

@@ -58,6 +58,16 @@ config HDQ_MASTER_OMAP
 	  Say Y here if you want support for the 1-wire or HDQ Interface
 	  on an OMAP processor.
 
+config W1_MASTER_PHYTIUM
+	bool "Phytium 1-wire driver"
+	depends on ARCH_PHYTIUM || COMPILE_TEST
+	help
+	  Say Y here if you want to get support for the 1-wire interface
+	  on an Phytium SoC.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called phytium-w1.
+
 config W1_MASTER_SGI
 	tristate "SGI ASIC driver"
 	help

drivers/w1/masters/Makefile

@@ -10,4 +10,5 @@ obj-$(CONFIG_W1_MASTER_MXC)		+= mxc_w1.o
 
 obj-$(CONFIG_W1_MASTER_GPIO)		+= w1-gpio.o
 obj-$(CONFIG_HDQ_MASTER_OMAP)		+= omap_hdq.o
+obj-$(CONFIG_W1_MASTER_PHYTIUM)		+= phytium_w1.o
 obj-$(CONFIG_W1_MASTER_SGI)		+= sgi_w1.o