diff options
| author |   Maxime Ripard <maxime.ripard@free-electrons.com> | 2014-07-11 18:43:18 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2014-09-27 08:58:04 +0200 |
| commit | 37e1041f04717d726931c8688cbf425071aeb9c1 (patch) | |
| tree | 3161defb1471bf0c31bc08747bfc3dedeb2ea6a1 /Documentation/devicetree | |
| parent | clk: sunxi: Move mbus to mod0 file (diff) | |
| download | linux-dev-37e1041f04717d726931c8688cbf425071aeb9c1.tar.xz linux-dev-37e1041f04717d726931c8688cbf425071aeb9c1.zip | |
clk: sunxi: mod0: Introduce MMC proper phase handling
The MMC clock we thought we had until now are actually not one but three
different clocks.
The main one is unchanged, and will have three outputs:
- The clock fed into the MMC
- a sample and output clocks, to deal with when should we output/sample data
to/from the MMC bus
The phase control we had are actually controlling the two latter clocks, but
the main MMC one is unchanged.
We can adjust the phase with a 3 bits value, from 0 to 7, 0 meaning a 180 phase
shift, and the other values being the number of periods from the MMC parent
clock to outphase the clock of.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/clock/sunxi.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt index b938a990602a..eb690ed92a53 100644 --- a/Documentation/devicetree/bindings/clock/sunxi.txt +++ b/Documentation/devicetree/bindings/clock/sunxi.txt @@ -47,6 +47,8 @@ Required properties: "allwinner,sun6i-a31-apb2-gates-clk" - for the APB2 gates on A31 "allwinner,sun8i-a23-apb2-gates-clk" - for the APB2 gates on A23 "allwinner,sun5i-a13-mbus-clk" - for the MBUS clock on A13 + "allwinner,sun4i-a10-mmc-output-clk" - for the MMC output clock on A10 + "allwinner,sun4i-a10-mmc-sample-clk" - for the MMC sample clock on A10 "allwinner,sun4i-a10-mod0-clk" - for the module 0 family of clocks "allwinner,sun7i-a20-out-clk" - for the external output clocks "allwinner,sun7i-a20-gmac-clk" - for the GMAC clock module on A20/A31 |