From 547f33509ccc6e016df02600d377778b75e26a7b Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Wed, 25 Sep 2013 14:12:48 -0700 Subject: clk: exynos-audss: allow input clocks to be specified in device tree This allows the input clocks to the Exynos AudioSS block to be specified via device-tree bindings. Default names will be used when an input clock is not given. Signed-off-by: Andrew Bresticker Acked-by: Mike Turquette Acked-by: Kukjin Kim Signed-off-by: Tomasz Figa --- .../devicetree/bindings/clock/clk-exynos-audss.txt | 32 ++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-) (limited to 'Documentation/devicetree/bindings/clock/clk-exynos-audss.txt') diff --git a/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt b/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt index 75e2e1999f87..85b9e28078c8 100644 --- a/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt +++ b/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt @@ -14,6 +14,21 @@ Required Properties: - #clock-cells: should be 1. +- clocks: + - pll_ref: Fixed rate PLL reference clock, parent of mout_audss. "fin_pll" + is used if not specified. + - pll_in: Input PLL to the AudioSS block, parent of mout_audss. "fout_epll" + is used if not specified. + - cdclk: External i2s clock, parent of mout_i2s. "cdclk0" is used if not + specified. + - sclk_audio: Audio bus clock, parent of mout_i2s. "sclk_audio0" is used if + not specified. + - sclk_pcm_in: PCM clock, parent of sclk_pcm. "sclk_pcm0" is used if not + specified. + +- clock-names: Aliases for the above clocks. They should be "pll_ref", + "pll_in", "cdclk", "sclk_audio", and "sclk_pcm_in" respectively. + The following is the list of clocks generated by the controller. Each clock is assigned an identifier and client nodes use this identifier to specify the clock which they consume. Some of the clocks are available only on a particular @@ -35,15 +50,28 @@ sclk_i2s 7 pcm_bus 8 sclk_pcm 9 -Example 1: An example of a clock controller node is listed below. +Example 1: An example of a clock controller node using the default input + clock names is listed below. + +clock_audss: audss-clock-controller@3810000 { + compatible = "samsung,exynos5250-audss-clock"; + reg = <0x03810000 0x0C>; + #clock-cells = <1>; +}; + +Example 2: An example of a clock controller node with the input clocks + specified. clock_audss: audss-clock-controller@3810000 { compatible = "samsung,exynos5250-audss-clock"; reg = <0x03810000 0x0C>; #clock-cells = <1>; + clocks = <&clock 1>, <&clock 7>, <&clock 138>, <&clock 160>, + <&ext_i2s_clk>; + clock-names = "pll_ref", "pll_in", "sclk_audio", "sclk_pcm_in", "cdclk"; }; -Example 2: I2S controller node that consumes the clock generated by the clock +Example 3: I2S controller node that consumes the clock generated by the clock controller. Refer to the standard clock bindings for information about 'clocks' and 'clock-names' property. -- cgit v1.2.3