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mmc: SD/MMC Host Controller for Wondermedia WM8505/WM8650

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This patch adds support for the SD/MMC host controller found
on Wondermedia 8xxx series SoCs, currently supported under
arm/arch-vt8500.

A binding document is also included, based on mmc.txt with
additional properties.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Tony Prisk 2012-11-18 15:33:06 +13:00 committed by Chris Ball
parent 8d1e977da8
commit 3a96dff0f8
5 changed files with 1065 additions and 0 deletions
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23
Documentation/devicetree/bindings/mmc/vt8500-sdmmc.txt Normal file
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@ -0,0 +1,23 @@
* Wondermedia WM8505/WM8650 SD/MMC Host Controller
This file documents differences between the core properties described
by mmc.txt and the properties used by the wmt-sdmmc driver.
Required properties:
- compatible: Should be "wm,wm8505-sdhc".
- interrupts: Two interrupts are required - regular irq and dma irq.
Optional properties:
- sdon-inverted: SD_ON bit is inverted on the controller
Examples:
sdhc@d800a000 {
compatible = "wm,wm8505-sdhc";
reg = <0xd800a000 0x1000>;
interrupts = <20 21>;
clocks = <&sdhc>;
bus-width = <4>;
sdon-inverted;
};

1
MAINTAINERS
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@ -1221,6 +1221,7 @@ F: drivers/video/wm8505fb*
F: drivers/video/wmt_ge_rops.*
F: drivers/tty/serial/vt8500_serial.c
F: drivers/rtc/rtc-vt8500-c
F: drivers/mmc/host/wmt-sdmmc.c
ARM/ZIPIT Z2 SUPPORT
M: Marek Vasut <marek.vasut@gmail.com>

11
drivers/mmc/host/Kconfig
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@ -601,3 +601,14 @@ config MMC_USHC
Note: These controllers only support SDIO cards and do not
support MMC or SD memory cards.
config MMC_WMT
tristate "Wondermedia SD/MMC Host Controller support"
depends on ARCH_VT8500
default y
help
This selects support for the SD/MMC Host Controller on
Wondermedia WM8505/WM8650 based SoCs.
To compile this driver as a module, choose M here: the
module will be called wmt-sdmmc.

1
drivers/mmc/host/Makefile
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@ -44,6 +44,7 @@ obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o
obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o
obj-$(CONFIG_MMC_VUB300) += vub300.o
obj-$(CONFIG_MMC_USHC) += ushc.o
obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o

1029
drivers/mmc/host/wmt-sdmmc.c Normal file
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