Add documentation for an optional input clock which is essentially used
in sampling the input data coming from the card.
Signed-off-by: Manish Narani <manish.narani@xxxxxxxxxx>
---
Documentation/devicetree/bindings/mmc/arasan,sdhci.txt | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
index 15c6397..7c79496 100644
--- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
@@ -23,10 +23,10 @@ Required Properties:
- reg: From mmc bindings: Register location and length.
- clocks: From clock bindings: Handles to clock inputs.
- clock-names: From clock bindings: Tuple including "clk_xin" and "clk_ahb"
- Apart from these two there is one more optional clock which
- is "clk_sdcard". This clock represents output clock from
- controller and card. This must be specified when #clock-cells
- is specified.
+ Apart from these two there are two more optional clocks which
+ are "clk_sdcard" and "clk_sample". These two clocks represent
+ output and input clocks between controller and card. These
+ must be specified when #clock-cells is specified.
- interrupts: Interrupt specifier
Required Properties for "arasan,sdhci-5.1":
@@ -40,9 +40,9 @@ Optional Properties:
- clock-output-names: If specified, this will be the name of the card clock
which will be exposed by this device. Required if #clock-cells is
specified.
- - #clock-cells: If specified this should be the value <0>. With this
- property in place we will export one clock representing the Card
- Clock. This clock is expected to be consumed by our PHY. You must also
+ - #clock-cells: If specified this should be the value <0> or <1>. With this
+ property in place we will export one or two clocks representing the Card
+ Clock. These clocks are expected to be consumed by our PHY. You must also
specify
- xlnx,fails-without-test-cd: when present, the controller doesn't work when
the CD line is not connected properly, and the line is not connected
--
2.1.1
