This documents the devicetree bindings for the SDHC MMC host controller found in Meson6, Meson8, Meson8b and Meson8m2 SoCs. It can use a bus-width of 1/4/8-bit and it supports eMMC spec 4.4x/4.5x including HS200 mode (up to 100MHz clock). Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> --- .../bindings/mmc/amlogic,meson-mx-sdhc.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml b/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml new file mode 100644 index 000000000000..862aedba680f --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mmc/amlogic,meson-mx-sdhc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic Meson SDHC controller Device Tree Bindings + +allOf: + - $ref: "mmc-controller.yaml" + +maintainers: + - Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> + +description: | + The SDHC MMC host controller on Amlogic SoCs provides an eMMC and MMC + card interface with 1/4/8-bit bus width. + It supports eMMC spec 4.4x/4.5x including HS200 (up to 100MHz clock). + +properties: + compatible: + items: + - enum: + - amlogic,meson8-sdhc + - amlogic,meson8b-sdhc + - amlogic,meson8m2-sdhc + - const: amlogic,meson-mx-sdhc + + reg: + minItems: 1 + + interrupts: + minItems: 1 + + clocks: + minItems: 5 + + clock-names: + items: + - const: pclk + - const: clkin0 + - const: clkin1 + - const: clkin2 + - const: clkin3 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + mmc@8e00 { + compatible = "amlogic,meson8-sdhc", "amlogic,meson-mx-sdhc"; + reg = <0x8e00 0x42>; + interrupts = <GIC_SPI 78 IRQ_TYPE_EDGE_RISING>; + clocks = <&sdhc_pclk>, <&xtal>, <&fclk_div4>, <&fclk_div3>, <&fclk_div5>; + clock-names = "pclk", "clkin0", "clkin1", "clkin2", "clkin3"; + }; -- 2.24.0
