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9d11d12a16
Add support for SD/eMMC controller present on some Qualcomm Snapdragon devices. This controller implements SDHCI 2.0 interface but requires vendor-specific initialization. Driver works in PIO mode as ADMA is not supported by U-Boot (yet). Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
26 lines
690 B
Plaintext
26 lines
690 B
Plaintext
Qualcomm Snapdragon SDHCI controller
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Required properties:
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- compatible : "qcom,sdhci-msm-v4"
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- reg: Base address and length of registers:
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- Host controller registers (SDHCI)
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- SD Core registers
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- clock: interface clock (must accept SD bus clock as a frequency)
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Optional properties:
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- index: If there is more than one controller - controller index (required
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by generic SDHCI code).
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- bus_width: Width of SD/eMMC bus (default 4)
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- clock-frequency: Frequency of SD/eMMC bus (default 400 kHz)
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Example:
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sdhci@07864000 {
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compatible = "qcom,sdhci-msm-v4";
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reg = <0x7864900 0x11c 0x7864000 0x800>;
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index = <0x1>;
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bus-width = <0x4>;
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clock = <&clkc 1>;
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clock-frequency = <200000000>;
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};
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