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arc: vdk: Add support of MMC controller

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ARC VDK virtual platform emulates host MMC controller (DW Mobile Storage)
and moreover rootfs is situated on that virtual card.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Alexey Brodkin 2017-02-01 19:42:52 +03:00 committed by Vineet Gupta
parent 91447ec9b4
commit d9174e722d
2 changed files with 22 additions and 0 deletions
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18
arch/arc/boot/dts/vdk_axs10x_mb.dtsi
View File

@ -23,6 +23,12 @@
#clock-cells = <0>;
};
mmcclk: mmcclk {
compatible = "fixed-clock";
clock-frequency = <50000000>;
#clock-cells = <0>;
};
pguclk: pguclk {
#clock-cells = <0>;
compatible = "fixed-clock";
@ -94,5 +100,17 @@
interrupts = <5>;
interrupt-names = "arc_ps2_irq";
};
mmc@0x15000 {
compatible = "snps,dw-mshc";
reg = <0x15000 0x400>;
num-slots = <1>;
fifo-depth = <1024>;
card-detect-delay = <200>;
clocks = <&apbclk>, <&mmcclk>;
clock-names = "biu", "ciu";
interrupts = <7>;
bus-width = <4>;
};
};
};

4
arch/arc/configs/vdk_hs38_smp_defconfig
View File

@ -78,6 +78,10 @@ CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_SERIAL=y
CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
CONFIG_MSDOS_FS=y