Message-ID: <20231109082043.27147-5-jyanchou@realtek.com>
Date:   Thu, 9 Nov 2023 16:20:43 +0800
From:   Jyan Chou <jyanchou@...ltek.com>
To:     <ulf.hansson@...aro.org>, <adrian.hunter@...el.com>,
        <jh80.chung@...sung.com>, <riteshh@...eaurora.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>
CC:     <conor+dt@...nel.org>, <asutoshd@...eaurora.org>,
        <p.zabel@...gutronix.de>, <linux-mmc@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <arnd@...db.de>, <briannorris@...omium.org>, <doug@...morgal.com>,
        <tonyhuang.sunplus@...il.com>, <abel.vesa@...aro.org>,
        <william.qiu@...rfivetech.com>, <jyanchou@...ltek.com>
Subject: [PATCH V6][4/4] dt-bindings: mmc: Add dt-bindings for realtek mmc driver

Document the device-tree bindings for Realtek SoCs mmc driver.

Signed-off-by: Jyan Chou <jyanchou@...ltek.com>

---
v5 -> v6:
- Drop the incorrect, generic compatible and modify it to specific.
- Drop useless properties.
- Modify bindings to make DTS and driver match.

v4 -> v5:
- Remove unused property, e.g.,cqe, resets, clock-freq-min-max.
- Fix indentation.

v3 -> v4:
- Describe the items to make properties and item easy to understand.
- Fix examples' indentation and compiling error.
- Drop useless properties.

v2 -> v3:
- Modify dt-bindings' content and description.
- Fix coding style.
- Update the list of maintainers.

v1 -> v2:
- Add dt-bindings.
---
 .../bindings/mmc/realtek,rtd-dw-cqe-emmc.yaml | 162 ++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/realtek,rtd-dw-cqe-emmc.yaml

diff --git a/Documentation/devicetree/bindings/mmc/realtek,rtd-dw-cqe-emmc.yaml b/Documentation/devicetree/bindings/mmc/realtek,rtd-dw-cqe-emmc.yaml
new file mode 100644
index 000000000000..d7118cf457e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/realtek,rtd-dw-cqe-emmc.yaml
@@ -0,0 +1,162 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/realtek,rtd-dw-cqe-emmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek DesignWare mobile storage host controller
+
+description:
+  Realtek uses the Synopsys DesignWare mobile storage host controller
+  to interface a SoC with storage medium. This file documents the Realtek
+  specific extensions.
+
+maintainers:
+  - Jyan Chou <jyanchou@...ltek.com>
+
+allOf:
+  - $ref: synopsys-dw-mshc-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - realtek,rtd1325-dw-cqe-emmc
+      - realtek,rtd1319-dw-cqe-emmc
+      - realtek,rtd1315e-dw-cqe-emmc
+      - realtek,rtd1619b-dw-cqe-emmc
+
+  reg:
+    items:
+      - description: emmc base address
+      - description: cqhci base address
+
+  reg-names:
+    items:
+      - const: emmc
+      - const: cqhci
+
+  realtek,m2tmx:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle to m2tmx syscon register region.
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: biu
+      - const: ciu
+      - const: vp0
+      - const: vp1
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: reset
+
+  pinctrl-0:
+    description:
+      should contain default/high speed pin ctrl.
+    maxItems: 1
+
+  pinctrl-1:
+    description:
+      should contain sdr50 mode pin ctrl.
+    maxItems: 1
+
+  pinctrl-2:
+    description:
+      should contain ddr50 mode pin ctrl.
+    maxItems: 1
+
+  pinctrl-3:
+    description:
+      should contain hs200 speed pin ctrl.
+    maxItems: 1
+
+  pinctrl-4:
+    description:
+      should contain hs400 speed pin ctrl.
+    maxItems: 1
+
+  pinctrl-5:
+    description:
+      should contain tune0 pin ctrl.
+    maxItems: 1
+
+  pinctrl-6:
+    description:
+      should contain tune1 pin ctrl.
+    maxItems: 1
+
+  pinctrl-7:
+    description:
+      should contain tune2 pin ctrl.
+    maxItems: 1
+
+  pinctrl-8:
+    description:
+      should contain tune3 pin ctrl.
+    maxItems: 1
+
+  pinctrl-9:
+    description:
+      should contain tune4 pin ctrl.
+    maxItems: 1
+
+  pinctrl-names:
+    maxItems: 10
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - clocks
+  - clock-names
+  - vmmc-supply
+  - pinctrl-names
+  - pinctrl-0
+  - pinctrl-1
+  - pinctrl-3
+  - pinctrl-4
+  - pinctrl-5
+  - pinctrl-6
+  - pinctrl-7
+  - pinctrl-8
+  - pinctrl-9
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    emmc: mmc@...00 {
+      compatible = "realtek,rtd1315e-dw-cqe-emmc";
+      reg = <0x00012000 0x00600>,
+            <0x00012180 0x00060>;
+      reg-names = "emmc", "cqhci";
+      realtek,m2tmx = <&m2tmx>;
+      interrupts = <0 42 4>;
+      clocks = <&cc 22>, <&cc 26>, <&cc 121>, <&cc 122>;
+      clock-names = "biu", "ciu", "vp0", "vp1";
+      resets = <&rst 20>;
+      reset-names = "reset";
+      vmmc-supply = <&reg_vcc1v8>;
+      pinctrl-names = "default", "sdr50", "ddr50", "hs200", "hs400",
+                      "tune0","tune1", "tune2","tune3", "tune4";
+      pinctrl-0 = <&emmc_pins_sdr50>;
+      pinctrl-1 = <&emmc_pins_sdr50>;
+      pinctrl-2 = <&emmc_pins_ddr50>;
+      pinctrl-3 = <&emmc_pins_hs200>;
+      pinctrl-4 = <&emmc_pins_hs400>;
+      pinctrl-5 = <&emmc_pins_tune0>;
+      pinctrl-6 = <&emmc_pins_tune1>;
+      pinctrl-7 = <&emmc_pins_tune2>;
+      pinctrl-8 = <&emmc_pins_tune3>;
+      pinctrl-9 = <&emmc_pins_tune4>;
+      supports-cqe;
+    };
-- 
2.42.0

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