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clk: shmobile: document DIV6 clock parent bindings 

Describes how to specify the parents for clocks with EXSRC bits.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Ulrich Hecht 2014-11-07 16:51:08 +01:00 committed by Geert Uytterhoeven
parent c6d67fb037
commit bfadcadf03
1 changed files with 12 additions and 6 deletions
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18
Documentation/devicetree/bindings/clock/renesas,cpg-div6-clocks.txt
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@ -7,11 +7,16 @@ to 64.
Required Properties:
- compatible: Must be one of the following
- "renesas,r8a73a4-div6-clock" for R8A73A4 (R-Mobile APE6) DIV6 clocks
- "renesas,r8a7740-div6-clock" for R8A7740 (R-Mobile A1) DIV6 clocks
- "renesas,r8a7790-div6-clock" for R8A7790 (R-Car H2) DIV6 clocks
- "renesas,r8a7791-div6-clock" for R8A7791 (R-Car M2) DIV6 clocks
- "renesas,sh73a0-div6-clock" for SH73A0 (SH-Mobile AG5) DIV6 clocks
- "renesas,cpg-div6-clock" for generic DIV6 clocks
- reg: Base address and length of the memory resource used by the DIV6 clock
- clocks: Reference to the parent clock
- clocks: Reference to the parent clock(s); either one, four, or eight
clocks must be specified. For clocks with multiple parents, invalid
settings must be specified as "<0>".
- #clock-cells: Must be 0
- clock-output-names: The name of the clock as a free-form string
@ -19,10 +24,11 @@ Required Properties:
Example
-------
sd2_clk: sd2_clk@e6150078 {
compatible = "renesas,r8a7790-div6-clock", "renesas,cpg-div6-clock";
reg = <0 0xe6150078 0 4>;
clocks = <&pll1_div2_clk>;
sdhi2_clk: sdhi2_clk@e615007c {
compatible = "renesas,r8a73a4-div6-clock", "renesas,cpg-div6-clock";
reg = <0 0xe615007c 0 4>;
clocks = <&pll1_div2_clk>, <&cpg_clocks R8A73A4_CLK_PLL2S>,
<0>, <&extal2_clk>;
#clock-cells = <0>;
clock-output-names = "sd2";
clock-output-names = "sdhi2ck";
};