[PATCH v2 1/2] dt-bindings: mmc: hisilicon,hi3660-dw-mshc: Convert to DT schema

[Bhargav Joshi <rougueprince47@gmail.com>]

Convert the Hisilicon DesignWare Mobile Storage Host Controller
(dw-mshc) bindings from text format to DT schema.

As part of this conversion, the binding file is renamed from
k3-dw-mshc.txt to hisilicon,hi3660-dw-mshc.yaml to align with compatible
string naming conventions. Examples have been updated to pass schema
validation.

Note: synopsys-dw-mshc binding specifies clock names as "biu" followed
by "ciu". However, this Hisilicon binding reverses the order to 'ciu'
then 'biu' to match both the legacy text binding and in-kernel Hisilicon
DTS board files.

Signed-off-by: Bhargav Joshi <rougueprince47@gmail.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
---
Changes in v2:
    - Grouped compatible strings into an enum.
    - Replaced raw numbers with proper flags.
    - Fixed property order and removed invalid hex values.
    - Added explanation for clock order change in commit message.
    - Collected Acked-by tag.

 .../mmc/hisilicon,hi3660-dw-mshc.yaml         | 117 ++++++++++++++++++
 .../devicetree/bindings/mmc/k3-dw-mshc.txt    |  73 -----------
 2 files changed, 117 insertions(+), 73 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mmc/hisilicon,hi3660-dw-mshc.yaml
 delete mode 100644 Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt

diff --git a/Documentation/devicetree/bindings/mmc/hisilicon,hi3660-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/hisilicon,hi3660-dw-mshc.yaml
new file mode 100644
index 000000000000..296bd776488e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/hisilicon,hi3660-dw-mshc.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/hisilicon,hi3660-dw-mshc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Hisilicon specific extensions to the Synopsys Designware Mobile Storage Host Controller
+
+maintainers:
+  - Zhangfei Gao <zhangfei.gao@linaro.org>
+
+description:
+  The Synopsys designware mobile storage host controller is used to interface
+  a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
+  differences between the core Synopsys dw mshc controller properties described
+  by synopsys-dw-mshc.txt and the properties used by the Hisilicon specific
+  extensions to the Synopsys Designware Mobile Storage Host Controller.
+
+allOf:
+  - $ref: /schemas/mmc/synopsys-dw-mshc-common.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - hisilicon,hi3660-dw-mshc
+          - hisilicon,hi4511-dw-mshc
+          - hisilicon,hi6220-dw-mshc
+      - items:
+          - const: hisilicon,hi3670-dw-mshc
+          - const: hisilicon,hi3660-dw-mshc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: card interface unit clock
+      - description: bus interface unit clock
+
+  clock-names:
+    items:
+      - const: ciu
+      - const: biu
+
+  hisilicon,peripheral-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle of syscon used to control peripheral.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/hi3620-clock.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    mmc@fcd03000 {
+        compatible = "hisilicon,hi4511-dw-mshc";
+        reg = <0xfcd03000 0x1000>;
+        interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>;
+        clock-names = "ciu", "biu";
+        vmmc-supply = <&ldo12>;
+        fifo-depth = <0x100>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
+        bus-width = <4>;
+        disable-wp;
+        cd-gpios = <&gpio10 3 GPIO_ACTIVE_HIGH>;
+        cap-mmc-highspeed;
+        cap-sd-highspeed;
+    };
+
+  - |
+    #include <dt-bindings/clock/hi6220-clock.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      mmc@f723e000 {
+          compatible = "hisilicon,hi6220-dw-mshc";
+          reg = <0x0 0xf723e000 0x0 0x1000>;
+          interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+          clocks = <&clock_sys HI6220_MMC1_CIUCLK>,
+                   <&clock_sys HI6220_MMC1_CLK>;
+          clock-names = "ciu", "biu";
+          bus-width = <4>;
+          disable-wp;
+          cap-sd-highspeed;
+          sd-uhs-sdr12;
+          sd-uhs-sdr25;
+          card-detect-delay = <200>;
+          hisilicon,peripheral-syscon = <&ao_ctrl>;
+          cd-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
+          pinctrl-names = "default", "idle";
+          pinctrl-0 = <&sd_pmx_func &sd_clk_cfg_func &sd_cfg_func>;
+          pinctrl-1 = <&sd_pmx_idle &sd_clk_cfg_idle &sd_cfg_idle>;
+          vqmmc-supply = <&ldo7>;
+          vmmc-supply = <&ldo10>;
+      };
+    };
diff --git a/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt
deleted file mode 100644
index 36c4bea675d5..000000000000
--- a/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt
+++ /dev/null
@@ -1,73 +0,0 @@
-* Hisilicon specific extensions to the Synopsys Designware Mobile
-  Storage Host Controller
-
-Read synopsys-dw-mshc.txt for more details
-
-The Synopsys designware mobile storage host controller is used to interface
-a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
-differences between the core Synopsys dw mshc controller properties described
-by synopsys-dw-mshc.txt and the properties used by the Hisilicon specific
-extensions to the Synopsys Designware Mobile Storage Host Controller.
-
-Required Properties:
-
-* compatible: should be one of the following.
-  - "hisilicon,hi3660-dw-mshc": for controllers with hi3660 specific extensions.
-  - "hisilicon,hi3670-dw-mshc", "hisilicon,hi3660-dw-mshc": for controllers
-     with hi3670 specific extensions.
-  - "hisilicon,hi4511-dw-mshc": for controllers with hi4511 specific extensions.
-  - "hisilicon,hi6220-dw-mshc": for controllers with hi6220 specific extensions.
-
-Optional Properties:
-- hisilicon,peripheral-syscon: phandle of syscon used to control peripheral.
-
-Example:
-
-	/* for Hi3620 */
-
-	/* SoC portion */
-	dwmmc_0: dwmmc0@fcd03000 {
-		compatible = "hisilicon,hi4511-dw-mshc";
-		reg = <0xfcd03000 0x1000>;
-		interrupts = <0 16 4>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>;
-		clock-names = "ciu", "biu";
-	};
-
-	/* Board portion */
-	dwmmc0@fcd03000 {
-		vmmc-supply = <&ldo12>;
-		fifo-depth = <0x100>;
-		pinctrl-names = "default";
-		pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
-		bus-width = <4>;
-		disable-wp;
-		cd-gpios = <&gpio10 3 0>;
-		cap-mmc-highspeed;
-		cap-sd-highspeed;
-	};
-
-	/* for Hi6220 */
-
-	dwmmc_1: dwmmc1@f723e000 {
-		compatible = "hisilicon,hi6220-dw-mshc";
-		bus-width = <0x4>;
-		disable-wp;
-		cap-sd-highspeed;
-		sd-uhs-sdr12;
-		sd-uhs-sdr25;
-		card-detect-delay = <200>;
-		hisilicon,peripheral-syscon = <&ao_ctrl>;
-		reg = <0x0 0xf723e000 0x0 0x1000>;
-		interrupts = <0x0 0x49 0x4>;
-		clocks = <&clock_sys HI6220_MMC1_CIUCLK>, <&clock_sys HI6220_MMC1_CLK>;
-		clock-names = "ciu", "biu";
-		cd-gpios = <&gpio1 0 1>;
-		pinctrl-names = "default", "idle";
-		pinctrl-0 = <&sd_pmx_func &sd_clk_cfg_func &sd_cfg_func>;
-		pinctrl-1 = <&sd_pmx_idle &sd_clk_cfg_idle &sd_cfg_idle>;
-		vqmmc-supply = <&ldo7>;
-		vmmc-supply = <&ldo10>;
-	};
-- 
2.53.0