[PATCH v2 1/3] dt-bindings: mmc: Add bindings for StarFive

From: William Qiu
Date: Tue Dec 27 2022 - 07:25:41 EST


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

Signed-off-by: William Qiu <william.qiu@xxxxxxxxxxxxxxxx>
---
.../bindings/mmc/starfive,jh7110-mmc.yaml | 72 +++++++++++++++++++
1 file changed, 72 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml

diff --git a/Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml b/Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml
new file mode 100644
index 000000000000..430dd5f24933
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/starfive,jh7110-mmc.yaml#
+$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@xxxxxxxxxxxxxxxx>
+
+properties:
+ compatible:
+ const: starfive,jh7110-mmc
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: biu clock
+ - description: ciu clock
+
+ clock-names:
+ items:
+ - const: biu
+ - const: ciu
+
+ interrupts:
+ maxItems: 1
+
+ starfive,syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ arg0:arg0 is syscon.
+ arg1:arg1 is syscon register offset, used to enable MMC function.
+ arg2:arg2 is used to enable the register shift of the MMC function.
+ arg3:arg3 is used to enable the register mask of the MMC function.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+ - starfive,syscon
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ mmc@16010000 {
+ compatible = "starfive,jh7110-mmc";
+ reg = <0x16010000 0x10000>;
+ clocks = <&syscrg 91>,
+ <&syscrg 93>;
+ clock-names = "biu","ciu";
+ resets = <&syscrg 64>;
+ reset-names = "reset";
+ interrupts = <74>;
+ fifo-depth = <32>;
+ fifo-watermark-aligned;
+ data-addr = <0>;
+ starfive,syscon = <&syscon 0x14 0x1a 0x7c000000>;
+ };
--
2.34.1