sata_rcar: Add clocks to sata_rcar bindings

Now that the clocks are available in the R-Car Gen2 DT,
add clocks property description to the sata_rcar bindings.
The clocks have been tested on r8a7791 so we use that
as an example of the R-Car SATA node.

Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
[geert: Reworded clocks property]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/Documentation/devicetree/bindings/ata/sata_rcar.txt b/Documentation/devicetree/bindings/ata/sata_rcar.txt
index 80ae87a0784b..f09c1ee260ba 100644
--- a/Documentation/devicetree/bindings/ata/sata_rcar.txt
+++ b/Documentation/devicetree/bindings/ata/sata_rcar.txt
@@ -9,12 +9,14 @@ Required properties:
                           - "renesas,sata-r8a7793" for R-Car M2-N
 - reg                   : address and length of the SATA registers;
 - interrupts            : must consist of one interrupt specifier.
+- clocks                : must contain a reference to the functional clock.
 
 Example:
 
-sata: sata@fc600000 {
-        compatible = "renesas,sata-r8a7779";
-        reg = <0xfc600000 0x2000>;
+sata0: sata@ee300000 {
+        compatible = "renesas,sata-r8a7791";
+        reg = <0 0xee300000 0 0x2000>;
         interrupt-parent = <&gic>;
-        interrupts = <0 100 IRQ_TYPE_LEVEL_HIGH>;
+        interrupts = <0 105 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&mstp8_clks R8A7791_CLK_SATA0>;
 };