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42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
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* Spreadtrum SDHCI controller (sdhci-sprd)
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The Secure Digital (SD) Host controller on Spreadtrum SoCs provides an interface
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for MMC, SD and SDIO types of cards.
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This file documents differences between the core properties in mmc.txt
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and the properties used by the sdhci-sprd driver.
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Required properties:
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- compatible: Should contain "sprd,sdhci-r11".
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- reg: physical base address of the controller and length.
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- interrupts: Interrupts used by the SDHCI controller.
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- clocks: Should contain phandle for the clock feeding the SDHCI controller
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- clock-names: Should contain the following:
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"sdio" - SDIO source clock (required)
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"enable" - gate clock which used for enabling/disabling the device (required)
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Optional properties:
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- assigned-clocks: the same with "sdio" clock
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- assigned-clock-parents: the default parent of "sdio" clock
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Examples:
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sdio0: sdio@20600000 {
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compatible = "sprd,sdhci-r11";
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reg = <0 0x20600000 0 0x1000>;
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interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
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clock-names = "sdio", "enable";
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clocks = <&ap_clk CLK_EMMC_2X>,
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<&apahb_gate CLK_EMMC_EB>;
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assigned-clocks = <&ap_clk CLK_EMMC_2X>;
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assigned-clock-parents = <&rpll CLK_RPLL_390M>;
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bus-width = <8>;
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non-removable;
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no-sdio;
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no-sd;
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cap-mmc-hw-reset;
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status = "okay";
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};
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