[PATCH v3 2/2] devicetree bindings mmc Add bindings doc for Sunplus SP7021

[Li-hao Kuo]

Add devicetree bindings mmc Add bindings doc for Sunplus SP7021

Signed-off-by: Li-hao Kuo <lhjeff911@xxxxxxxxx>
---
Changes in v3:
 - Addressed all comments from Mr. Rob Herring
 - Modified SD/SDIO driver.

 .../devicetree/bindings/mmc/sunplus-sd2.yaml       | 73 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 74 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml

diff --git a/Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml b/Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml
new file mode 100644
index 0000000..2f96e35
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/sunplus-sd2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SD/SDIO controller
+
+maintainers:
+  - Li-hao Kuo <lhjeff911@xxxxxxxxx>
+
+properties:
+  compatible:
+    enum:
+      - sunplus,sp7021-card
+      - sunplus,sp7021-sdio
+
+  reg:
+    items:
+      - description: Base address and length of the SD/SDIO registers
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  max-frequency: true
+
+allOf:
+  - $ref: "mmc-controller.yaml"
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - resets
+  - pinctrl-names
+  - pinctrl-0
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sp-sp7021.h>
+    #include <dt-bindings/reset/sp-sp7021.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    sdcard: sdcard@9c003e80 {
+       compatible = "sunplus,sp7021-card";
+       reg = <0x9c003e80 0x280>;
+       interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
+       clocks = <&clkc CARD_CTL1>;
+       resets = <&rstc RST_CARD_CTL1>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc1_mux &mmc1_mux_cd>;
+       max-frequency = <52000000>;
+    };
+    sdio: mmc@9c008400 {
+       compatible = "sunplus,sp7021-sdio";
+       reg = <0x9c008400 0x280>;
+       interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
+       clocks = <&clkc CARD_CTL1>;
+       resets = <&rstc RST_CARD_CTL1>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&pins_sdio>;
+       max-frequency = <52000000>;
+    };
+...
\ No newline at end of file
diff --git a/MAINTAINERS b/MAINTAINERS
index 2c1d9e8..297d512 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18246,6 +18246,7 @@ SUNPLUS SD/SDIO HOST CONTROLLER INTERFACE DRIVER
 M:	Li-hao Kuo <lhjeff911@xxxxxxxxx>
 L:	linux-mmc@xxxxxxxxxxxxxxx
 S:	Maintained
+F:	Documentation/devicetree/bindings/mmc/sunplus-sd2.yaml
 F:	drivers/mmc/host/sunplus_sd2.c
 
 SUPERH
-- 
2.7.4