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author | Kevin Hilman <khilman@baylibre.com> | 2018-07-20 18:01:26 +0200 |
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committer | Kevin Hilman <khilman@baylibre.com> | 2018-07-20 18:01:26 +0200 |
commit | 7382913e230329cd5a5c08c3a4cac31221672426 (patch) | |
tree | 19873f52ba2458c9c76c679569d66d1b114097e5 /Documentation | |
parent | ARM64: dts: meson-axg: add pdm pins (diff) | |
parent | clk: meson: expose GEN_CLK clkid (diff) | |
download | linux-7382913e230329cd5a5c08c3a4cac31221672426.tar.xz linux-7382913e230329cd5a5c08c3a4cac31221672426.zip |
Merge tag 'meson-clk-dt-for-v4.19' of https://github.com/BayLibre/clk-meson into v4.19/dt64-2
* Add pcie, mipi and gen_clk clk ids
* Add audio clk controller clock bindings
* tag 'meson-clk-dt-for-v4.19' of https://github.com/BayLibre/clk-meson:
clk: meson: expose GEN_CLK clkid
clk: meson-axg: add pcie and mipi clock bindings
dt-bindings: clock: add meson axg audio clock controller bindings
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.txt | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.txt new file mode 100644 index 000000000000..61777ad24f61 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.txt @@ -0,0 +1,56 @@ +* Amlogic AXG Audio Clock Controllers + +The Amlogic AXG audio clock controller generates and supplies clock to the +other elements of the audio subsystem, such as fifos, i2s, spdif and pdm +devices. + +Required Properties: + +- compatible : should be "amlogic,axg-audio-clkc" for the A113X and A113D +- reg : physical base address of the clock controller and length of + memory mapped region. +- clocks : a list of phandle + clock-specifier pairs for the clocks listed + in clock-names. +- clock-names : must contain the following: + * "pclk" - Main peripheral bus clock + may contain the following: + * "mst_in[0-7]" - 8 input plls to generate clock signals + * "slv_sclk[0-9]" - 10 slave bit clocks provided by external + components. + * "slv_lrclk[0-9]" - 10 slave sample clocks provided by external + components. +- resets : phandle of the internal reset line +- #clock-cells : should be 1. + +Each clock is assigned an identifier and client nodes can use this identifier +to specify the clock which they consume. All available clocks are defined as +preprocessor macros in the dt-bindings/clock/axg-audio-clkc.h header and can be +used in device tree sources. + +Example: + +clkc_audio: clock-controller@0 { + compatible = "amlogic,axg-audio-clkc"; + reg = <0x0 0x0 0x0 0xb4>; + #clock-cells = <1>; + + clocks = <&clkc CLKID_AUDIO>, + <&clkc CLKID_MPLL0>, + <&clkc CLKID_MPLL1>, + <&clkc CLKID_MPLL2>, + <&clkc CLKID_MPLL3>, + <&clkc CLKID_HIFI_PLL>, + <&clkc CLKID_FCLK_DIV3>, + <&clkc CLKID_FCLK_DIV4>, + <&clkc CLKID_GP0_PLL>; + clock-names = "pclk", + "mst_in0", + "mst_in1", + "mst_in2", + "mst_in3", + "mst_in4", + "mst_in5", + "mst_in6", + "mst_in7"; + resets = <&reset RESET_AUDIO>; +}; |