clk: shmobile: Add R-Car Gen2 ADSP clock support

Add the ADSP clock support to the R-Car generation 2 CPG driver.  This clock
gets derived from  PLL1.  The layout of the ADSPCKCR register is  similar to
those of the clocks supported by the 'clk-div6' driver but the divider encoding
is non-linear, so can't be supported by that driver...

Based on the original patch by Konstantin Kozhevnikov
<konstantin.kozhevnikov@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

1 files changed, 3 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
index 5b704b5ab8ab..b02944fba9de 100644
--- a/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
+++ b/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
@@ -18,7 +18,8 @@ Required Properties:
     to the USB_EXTAL clock
   - #clock-cells: Must be 1
   - clock-output-names: The names of the clocks. Supported clocks are "main",
-    "pll0", "pll1", "pll3", "lb", "qspi", "sdh", "sd0", "sd1", "z", and "rcan"
+    "pll0", "pll1", "pll3", "lb", "qspi", "sdh", "sd0", "sd1", "z", "rcan", and
+    "adsp"
 
 
 Example
@@ -32,5 +33,5 @@ Example
                 #clock-cells = <1>;
                 clock-output-names = "main", "pll0, "pll1", "pll3",
                                      "lb", "qspi", "sdh", "sd0", "sd1", "z",
-                                     "rcan";
+                                     "rcan", "adsp";
         };