[PATCH v9 03/17] ARM: sunxi: Add driver for SD/MMC hosts found on Allwinner sunxi SoCs
Hans de Goede
hdegoede at redhat.com
Tue Apr 29 01:26:13 PDT 2014
On 04/28/2014 09:36 PM, Maxime Ripard wrote:
> On Sat, Apr 26, 2014 at 12:16:07PM +0200, Hans de Goede wrote:
>> From: David Lanzendörfer <david.lanzendoerfer at o2s.ch>
>> The Allwinner sunxi mmc host uses dma in bus-master mode using a built-in
>> designware idmac controller, which is identical to the one found in the mmc-dw
>> hosts. However the rest of the host is not identical to mmc-dw, it deals with
>> sending stop commands in hardware which makes it significantly different
>> from the mmc-dw devices.
>> HdG: Various cleanups and fixes.
>> Signed-off-by: David Lanzendörfer <david.lanzendoerfer at o2s.ch>
>> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
>> .../devicetree/bindings/mmc/sunxi-mmc.txt | 43 +
>> drivers/mmc/host/Kconfig | 7 +
>> drivers/mmc/host/Makefile | 2 +
>> drivers/mmc/host/sunxi-mmc.c | 1125 ++++++++++++++++++++
>> 4 files changed, 1177 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/mmc/sunxi-mmc.txt
>> create mode 100644 drivers/mmc/host/sunxi-mmc.c
>> diff --git a/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt
>> new file mode 100644
>> index 0000000..f0c06e7
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt
>> @@ -0,0 +1,43 @@
>> +* Allwinner sunxi MMC controller
>> +The highspeed MMC host controller on Allwinner SoCs provides an interface
>> +for MMC, SD and SDIO types of memory cards.
>> +Supported maximum speeds are the ones of the eMMC standard 4.5 as well
>> +as the speed of SD standard 3.0.
>> +Absolute maximum transfer rate is 200MB/s
>> +Required properties:
>> + - compatible : "allwinner,sun4i-a10-mmc" or "allwinner,sun5i-a13-mmc"
>> + - reg : mmc controller base registers
>> + - clocks : a list with 2 phandle + clock specifier pairs
>> + - clock-names : must contain "ahb" and "mod"
> Again, this is not a module0 clock, so the clock name is misleading.
Ah, I see what you're getting at, yes giving it a different name here makes
sense I'll change it to mmc in the next version of the patch-set.
More information about the linux-arm-kernel