On Sat, May 6, 2017 at 7:18 PM, Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: > From: Carlo Caione <carlo@xxxxxxxxxxxx> > > Add a driver for the SDIO/MMC host found on the Amlogic Meson SoCs. This > is an MMC controller which provides an interface between the application > processor and various memory cards. It supports the SD specification > v2.0 and the eMMC specification v4.41. > > The controller provides an internal "mux" which allows connecting up to > three MMC devices to it. Only one device can be used at a time though > since the registers are shared across all devices. The driver takes care > of synchronizing access (similar to the dw_mmc driver). > The maximum supported bus-width is 4-bits. > > Amlogic's GPL kernel sources call the corresponding driver "aml_sdio" to > differentiate it from the other MMC controller in (at least the Meson8 > and Meson8b) the SoCs (they call the other drivers aml_sdhc and > aml_sdhc_m8, which seem to support a bus-width of up to 8-bits). > > Signed-off-by: Carlo Caione <carlo@xxxxxxxxxxxx> > Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> > --- > drivers/mmc/host/Kconfig | 12 + > drivers/mmc/host/Makefile | 1 + > drivers/mmc/host/meson-mx-sdio.c | 978 +++++++++++++++++++++++++++++++++++++++ > 3 files changed, 991 insertions(+) > create mode 100644 drivers/mmc/host/meson-mx-sdio.c > > diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig > index a638cd0d80be..c557482ae327 100644 > --- a/drivers/mmc/host/Kconfig > +++ b/drivers/mmc/host/Kconfig > @@ -343,6 +343,18 @@ config MMC_MESON_GX > > If you have a controller with this interface, say Y here. > > +config MMC_MESON_MX_SDIO > + tristate "Amlogic Meson6/Meson8/Meson8b SD/MMC Host Controller support" > + depends on ARCH_MESON || COMPILE_TEST > + depends on HAS_DMA > + depends on OF just got an email from the kbuild test robot reminding me that I missed a COMMON_CLK dependency here. not a big deal - I'll fix this in the next version > + help > + This selects support for the SD/MMC Host Controller on > + Amlogic Meson6, Meson8 and Meson8b SoCs. > + > + If you have a controller with this interface, say Y or M here. > + If unsure, say N. > + > config MMC_MOXART > tristate "MOXART SD/MMC Host Controller support" > depends on ARCH_MOXART && MMC [snip] -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
