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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/fsl-imx-esdhc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Enhanced Secure Digital Host Controller (eSDHC) for i.MX
+
+maintainers:
+  - Shawn Guo <shawn.guo@linaro.org>
+
+allOf:
+  - $ref: "mmc-controller.yaml"
+
+description: |
+  The Enhanced Secure Digital Host Controller on Freescale i.MX family
+  provides an interface for MMC, SD, and SDIO types of memory cards.
+
+  This file documents differences between the core properties described
+  by mmc.txt and the properties used by the sdhci-esdhc-imx driver.
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx25-esdhc
+      - fsl,imx35-esdhc
+      - fsl,imx51-esdhc
+      - fsl,imx53-esdhc
+      - fsl,imx6q-usdhc
+      - fsl,imx6sl-usdhc
+      - fsl,imx6sx-usdhc
+      - fsl,imx6ull-usdhc
+      - fsl,imx7d-usdhc
+      - fsl,imx7ulp-usdhc
+      - fsl,imx8mq-usdhc
+      - fsl,imx8mm-usdhc
+      - fsl,imx8mn-usdhc
+      - fsl,imx8mp-usdhc
+      - fsl,imx8qm-usdhc
+      - fsl,imx8qxp-usdhc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  fsl,wp-controller:
+    description: |
+      boolean, if present, indicate to use controller internal write protection.
+    type: boolean
+
+  fsl,delay-line:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Specify the number of delay cells for override mode.
+      This is used to set the clock delay for DLL(Delay Line) on override mode
+      to select a proper data sampling window in case the clock quality is not good
+      due to signal path is too long on the board. Please refer to eSDHC/uSDHC
+      chapter, DLL (Delay Line) section in RM for details.
+    default: 0
+
+  voltage-ranges:
+    $ref: '/schemas/types.yaml#/definitions/uint32-matrix'
+    description: |
+      Specify the voltage range in case there are software transparent level
+      shifters on the outputs of the controller. Two cells are required, first
+      cell specifies minimum slot voltage (mV), second cell specifies maximum
+      slot voltage (mV).
+    items:
+      items:
+        - description: value for minimum slot voltage
+        - description: value for maximum slot voltage
+    maxItems: 1
+
+  fsl,tuning-start-tap:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Specify the start delay cell point when send first CMD19 in tuning procedure.
+    default: 0
+
+  fsl,tuning-step:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Specify the increasing delay cell steps in tuning procedure.
+      The uSDHC use one delay cell as default increasing step to do tuning process.
+      This property allows user to change the tuning step to more than one delay
+      cells which is useful for some special boards or cards when the default
+      tuning step can't find the proper delay window within limited tuning retries.
+    default: 0
+
+  fsl,strobe-dll-delay-target:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Specify the strobe dll control slave delay target.
+      This delay target programming host controller loopback read clock, and this
+      property allows user to change the delay target for the strobe input read clock.
+      If not use this property, driver default set the delay target to value 7.
+      Only eMMC HS400 mode need to take care of this property.
+    default: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mmc@70004000 {
+        compatible = "fsl,imx51-esdhc";
+        reg = <0x70004000 0x4000>;
+        interrupts = <1>;
+        fsl,wp-controller;
+    };
+
+    mmc@70008000 {
+        compatible = "fsl,imx51-esdhc";
+        reg = <0x70008000 0x4000>;
+        interrupts = <2>;
+        cd-gpios = <&gpio1 6 0>; /* GPIO1_6 */
+        wp-gpios = <&gpio1 5 0>; /* GPIO1_5 */
+    };