[PATCH v2 1/2] dt-bindings: mmc: spacemit,sdhci: add support for K1 SoC

Yixun Lan
2025-05-01T08:50:57Z

Add support for the SD/eMMC Host Controller found in SpacemiT K1 SoC,
The controller supports data transmission of MMC, SDIO, SD protocol.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
.../devicetree/bindings/mmc/spacemit,sdhci.yaml | 53 ++++++++++++++++++++++
1 file changed, 53 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml b/Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..13d9382058fbc1c12be1024d1c550f04a825673c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/spacemit,sdhci.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/spacemit,sdhci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SpacemiT SDHCI Controller
+
+maintainers:
+ - Yixun Lan <dlan@gentoo.org>
+
+allOf:
+ - $ref: mmc-controller.yaml#
+
+properties:
+ compatible:
+ const: spacemit,k1-sdhci
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: core clock, used by internal controller
+ - description: io clock, output for SD, SDIO, eMMC device
+
+ clock-names:
+ items:
+ - const: core
+ - const: io
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ mmc@d4281000 {
+ compatible = "spacemit,k1-sdhci";
+ reg = <0xd4281000 0x200>;
+ interrupts = <101>;
+ interrupt-parent = <&plic>;
+ clocks = <&clk_apmu 10>, <&clk_apmu 13>;
+ clock-names = "core", "io";
+ };

--
2.49.0