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4d7c07cd6c
Add support for the DW MMC host found on the Imagination Pistachio SoC. Like the DW MMC hosts found on SOCFPGA and Rockchip SoCs, the DW MMC host on Pistachio requires the use of SDMMC_CMD_USE_HOLD_REG. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
30 lines
864 B
Plaintext
30 lines
864 B
Plaintext
* Imagination specific extensions to the Synopsys Designware Mobile Storage
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Host Controller
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The Synopsys designware mobile storage host controller is used to interface
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a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
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differences between the core Synopsys dw mshc controller properties described
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by synopsys-dw-mshc.txt and the properties used by the Imagination specific
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extensions to the Synopsys Designware Mobile Storage Host Controller.
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Required Properties:
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* compatible: should be
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- "img,pistachio-dw-mshc": for Pistachio SoCs
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Example:
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mmc@18142000 {
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compatible = "img,pistachio-dw-mshc";
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reg = <0x18142000 0x400>;
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interrupts = <GIC_SHARED 39 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&system_clk>, <&sdhost_clk>;
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clock-names = "biu", "ciu";
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fifo-depth = <0x20>;
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bus-width = <4>;
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num-slots = <1>;
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disable-wp;
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};
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