linux-kernel - [PATCH v1 1/3] dt-bindings: mmc: Add bindings for StarFive

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Message-ID: <20221207131731.1291517-2-william.qiu@starfivetech.com>
Date:   Wed, 7 Dec 2022 21:17:29 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     <linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        William Qiu <william.qiu@...rfivetech.com>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 1/3] dt-bindings: mmc: Add bindings for StarFive

Add documentation to describe StarFive
designware mobile storage host controller driver.

Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
---
 .../bindings/mmc/starfive,jh7110-sdio.yaml    | 71 +++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml

diff --git a/Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml b/Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml
new file mode 100644
index 000000000000..4f27ef3cf4f3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/starfive,jh7110-sdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive Designware Mobile Storage Host Controller
+
+description:
+  StarFive uses the Synopsys designware mobile storage host controller
+  to interface a SoC with storage medium such as eMMC or SD/MMC cards.
+
+allOf:
+  - $ref: "synopsys-dw-mshc-common.yaml#"
+
+maintainers:
+  - William Qiu <william.qiu@...rfivetech.com>
+
+properties:
+  compatible:
+    const: starfive,jh7110-sdio
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    items:
+      - description: biu clock
+      - description: ciu clock
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: biu
+      - const: ciu
+
+  interrupts:
+    maxItems: 1
+
+  starfive,sys-syscon:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      The desired number of times that the host execute tuning when needed.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/starfive-jh7110.h>
+    #include <dt-bindings/reset/starfive-jh7110.h>
+    mmc@...10000 {
+            compatible = "starfive,jh7110-sdio";
+            reg = <0x16010000 0x10000>;
+            clocks = <&syscrg JH7110_SYSCLK_SDIO0_AHB>,
+                 <&syscrg JH7110_SYSCLK_SDIO0_SDCARD>;
+            clock-names = "biu","ciu";
+            resets = <&syscrg JH7110_SYSRST_SDIO0_AHB>;
+            reset-names = "reset";
+            interrupts = <74>;
+            fifo-depth = <32>;
+            fifo-watermark-aligned;
+            data-addr = <0>;
+    };
-- 
2.34.1