mmc: mmci: Convert bindings to DT schema

This converts the MMCI bindings from simple text to a proper
schema.

Cc: [email protected]
Cc: Marek Vasut <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Tested-by: Marek Vasut <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>

Author: linusw

Documentation/devicetree/bindings/mmc/arm,pl18x.yaml

@@ -0,0 +1,203 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/arm,pl18x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM PrimeCell MultiMedia Card Interface (MMCI) PL180 and PL181
+
+maintainers:
+  - Linus Walleij <[email protected]>
+  - Ulf Hansson <[email protected]>
+
+description:
+  The ARM PrimeCells MMCI PL180 and PL181 provides an interface for
+  reading and writing to MultiMedia and SD cards alike. Over the years
+  vendors have use the VHDL code from ARM to create derivative MMC/SD/SDIO
+  host controllers with very similar characteristics.
+
+allOf:
+  - $ref: /schemas/arm/primecell.yaml#
+  - $ref: mmc-controller.yaml#
+
+# We need a select here so we don't match all nodes with 'arm,primecell'
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - arm,pl180
+          - arm,pl181
+          - arm,pl18x
+  required:
+    - compatible
+
+properties:
+  compatible:
+    oneOf:
+      - description: The first version of the block, simply called
+          PL180 and found in the ARM Integrator IM/PD1 logic module.
+        items:
+          - const: arm,pl180
+          - const: arm,primecell
+      - description: The improved version of the block, found in the
+          ARM Versatile and later reference designs. Further revisions
+          exist but get detected at runtime by reading some magic numbers
+          in the PrimeCell ID registers.
+        items:
+          - const: arm,pl181
+          - const: arm,primecell
+      - description: Wildcard entry that will let the operating system
+          inspect the PrimeCell ID registers to determine which hardware
+          variant of PL180 or PL181 this is.
+        items:
+          - const: arm,pl18x
+          - const: arm,primecell
+
+  clocks:
+    description: One or two clocks, the "apb_pclk" and the "MCLK"
+      which is the core block clock. The names are not compulsory.
+    minItems: 1
+    maxItems: 2
+
+  power-domains: true
+
+  resets:
+    maxItems: 1
+
+  reg:
+    description: the MMIO memory window must be exactly 4KB (0x1000) and the
+      layout should provide the PrimeCell ID registers so that the device can
+      be discovered. On ST Micro variants, a second register window may be
+      defined if a delay block is present and used for tuning.
+
+  interrupts:
+    description: The first interrupt is the command interrupt and corresponds
+      to the event at the end of a command. The second interrupt is the
+      PIO (polled I/O) interrupt and occurs when the FIFO needs to be
+      emptied as part of a bulk read from the card. Some variants have these
+      two interrupts wired into the same line (logic OR) and in that case
+      only one interrupt may be provided.
+    minItems: 1
+    maxItems: 2
+
+  st,sig-dir-dat0:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, bus signal direction pins used for
+      DAT[0].
+
+  st,sig-dir-dat2:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, bus signal direction pins used for
+      DAT[2].
+
+  st,sig-dir-dat31:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, bus signal direction pins used for
+      DAT[3] and DAT[1].
+
+  st,sig-dir-dat74:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, bus signal direction pins used for
+      DAT[7] and DAT[4].
+
+  st,sig-dir-cmd:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, CMD signal direction used for
+      pin CMD.
+
+  st,sig-pin-fbclk:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, feedback clock FBCLK signal pin
+      in use.
+
+  st,sig-dir:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, signal direction polarity used for
+      pins CMD, DAT[0], DAT[1], DAT[2] and DAT[3].
+
+  st,neg-edge:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, data and command phase relation,
+      generated on the sd clock falling edge.
+
+  st,use-ckin:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: ST Micro-specific property, use CKIN pin from an external
+      driver to sample the receive data (for example with a voltage switch
+      transceiver).
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    mmc@5000 {
+      compatible = "arm,pl180", "arm,primecell";
+      reg = <0x5000 0x1000>;
+      interrupts-extended = <&vic 22 &sic 1>;
+      clocks = <&xtal24mhz>, <&pclk>;
+      clock-names = "mclk", "apb_pclk";
+    };
+
+    mmc@80126000 {
+      compatible = "arm,pl18x", "arm,primecell";
+      reg = <0x80126000 0x1000>;
+      interrupts = <0 60 IRQ_TYPE_LEVEL_HIGH>;
+      dmas = <&dma 29 0 0x2>, <&dma 29 0 0x0>;
+      dma-names = "rx", "tx";
+      clocks = <&prcc_kclk 1 5>, <&prcc_pclk 1 5>;
+      clock-names = "sdi", "apb_pclk";
+      max-frequency = <100000000>;
+      bus-width = <4>;
+      cap-sd-highspeed;
+      cap-mmc-highspeed;
+      cd-gpios  = <&gpio2 31 0x4>;
+      st,sig-dir-dat0;
+      st,sig-dir-dat2;
+      st,sig-dir-cmd;
+      st,sig-pin-fbclk;
+      vmmc-supply = <&ab8500_ldo_aux3_reg>;
+      vqmmc-supply = <&vmmci>;
+    };
+
+    mmc@101f6000 {
+      compatible = "arm,pl18x", "arm,primecell";
+      reg = <0x101f6000 0x1000>;
+      clocks = <&sdiclk>, <&pclksdi>;
+      clock-names = "mclk", "apb_pclk";
+      interrupt-parent = <&vica>;
+      interrupts = <22>;
+      max-frequency = <400000>;
+      bus-width = <4>;
+      cap-mmc-highspeed;
+      cap-sd-highspeed;
+      full-pwr-cycle;
+      st,sig-dir-dat0;
+      st,sig-dir-dat2;
+      st,sig-dir-dat31;
+      st,sig-dir-cmd;
+      st,sig-pin-fbclk;
+      vmmc-supply = <&vmmc_regulator>;
+    };
+
+    mmc@52007000 {
+      compatible = "arm,pl18x", "arm,primecell";
+      arm,primecell-periphid = <0x10153180>;
+      reg = <0x52007000 0x1000>;
+      interrupts = <49>;
+      interrupt-names = "cmd_irq";
+      clocks = <&rcc 0>;
+      clock-names = "apb_pclk";
+      resets = <&rcc 1>;
+      cap-sd-highspeed;
+      cap-mmc-highspeed;
+      max-frequency = <120000000>;
+    };