On Mon, Jul 01, 2019 at 10:59:45AM +0530, Manish Narani wrote:
> 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
> ---
> 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
What are the 2 clocks?
> 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
>
