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7b43da4cfd
Adds device tree support for davinci_mmc. Also add binding documentation. As of now tested for non-dma PIO mode and without GPIO card_detect/ write_protect option because of dependencies on EDMA and GPIO module DT support. Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Sekhar Nori <nsekhar@ti.com> Cc: linux-mmc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: davinci-linux-open-source@linux.davincidsp.com Cc: devicetree-discuss@lists.ozlabs.org Cc: cjb@laptop.org Cc: Sekhar Nori <nsekhar@ti.com> Cc: mporter@ti.com Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Chris Ball <cjb@laptop.org> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
34 lines
1.0 KiB
Plaintext
34 lines
1.0 KiB
Plaintext
* TI Highspeed MMC host controller for DaVinci
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The Highspeed MMC Host Controller on TI DaVinci family
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provides an interface for MMC, SD and SDIO types of memory cards.
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This file documents the properties used by the davinci_mmc driver.
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Required properties:
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- compatible:
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Should be "ti,da830-mmc": for da830, da850, dm365
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Should be "ti,dm355-mmc": for dm355, dm644x
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Optional properties:
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- bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1>
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- max-frequency: Maximum operating clock frequency, default 25MHz.
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- dmas: List of DMA specifiers with the controller specific format
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as described in the generic DMA client binding. A tx and rx
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specifier is required.
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- dma-names: RX and TX DMA request names. These strings correspond
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1:1 with the DMA specifiers listed in dmas.
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Example:
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mmc0: mmc@1c40000 {
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compatible = "ti,da830-mmc",
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reg = <0x40000 0x1000>;
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interrupts = <16>;
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status = "okay";
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bus-width = <4>;
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max-frequency = <50000000>;
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dmas = <&edma 16
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&edma 17>;
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dma-names = "rx", "tx";
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};
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