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author | Stephen Boyd <sboyd@codeaurora.org> | 2017-08-24 00:28:52 +0200 |
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committer | Stephen Boyd <sboyd@codeaurora.org> | 2017-08-24 00:28:52 +0200 |
commit | 3477a72b41f3515913f7da704965884ca51b4352 (patch) | |
tree | a1ec371bcdcedd1bb3c0ee19d4f109d6f1a4a474 /Documentation/devicetree | |
parent | clk: uniphier: remove sLD3 SoC support (diff) | |
parent | clk: meson: gxbb-aoclk: Add CEC 32k clock (diff) | |
download | linux-3477a72b41f3515913f7da704965884ca51b4352.tar.xz linux-3477a72b41f3515913f7da704965884ca51b4352.zip |
Merge tag 'meson-clk-for-4.14' of git://github.com/baylibre/clk-meson into clk-next
Pull Amlogic clock driver updates from Neil Armstrong:
* meson8b: add the reset controller to the clkc
* meson: expose all clk ids
* gxbb-aoclk: Add CEC 32k clock
* gxbb: add mmc input 0 clocks
* meson: fix protection against undefined clks
* gxbb: fix audio divider flags
* tag 'meson-clk-for-4.14' of git://github.com/baylibre/clk-meson:
clk: meson: gxbb-aoclk: Add CEC 32k clock
clk: meson: gxbb-aoclk: Switch to regmap for register access
dt-bindings: clock: amlogic, gxbb-aoclkc: Update bindings
clk: meson: gxbb: Add sd_emmc clk0 clocks
clk: meson: gxbb: fix clk_mclk_i958 divider flags
clk: meson: gxbb: fix meson cts_amclk divider flags
clk: meson: meson8b: register the built-in reset controller
dt-bindings: clock: gxbb-aoclk: Add CEC 32k clock
clk: meson: gxbb: Add sd_emmc clk0 clkids
clk: meson-gxbb: expose almost every clock in the bindings
clk: meson8b: expose every clock in the bindings
clk: meson: gxbb: fix protection against undefined clks
clk: meson: meson8b: fix protection against undefined clks
dt-bindings: clock: meson8b: describe the embedded reset controller
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r-- | Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt | 22 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt | 9 |
2 files changed, 24 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt b/Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt index a55d31b48d6e..64884ede4938 100644 --- a/Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt +++ b/Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt @@ -5,9 +5,11 @@ controllers within the Always-On part of the SoC. Required Properties: -- compatible: should be "amlogic,gxbb-aoclkc" -- reg: physical base address of the clock controller and length of memory - mapped region. +- compatible: value should be different for each SoC family as : + - GXBB (S905) : "amlogic,meson-gxbb-aoclkc" + - GXL (S905X, S905D) : "amlogic,meson-gxl-aoclkc" + - GXM (S912) : "amlogic,meson-gxm-aoclkc" + followed by the common "amlogic,meson-gx-aoclkc" - #clock-cells: should be 1. @@ -23,14 +25,22 @@ to specify the reset which they consume. All available resets are defined as preprocessor macros in the dt-bindings/reset/gxbb-aoclkc.h header and can be used in device tree sources. +Parent node should have the following properties : +- compatible: "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd" +- reg: base address and size of the AO system control register space. + Example: AO Clock controller node: - clkc_AO: clock-controller@040 { - compatible = "amlogic,gxbb-aoclkc"; - reg = <0x0 0x040 0x0 0x4>; +ao_sysctrl: sys-ctrl@0 { + compatible = "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd"; + reg = <0x0 0x0 0x0 0x100>; + + clkc_AO: clock-controller { + compatible = "amlogic,meson-gxbb-aoclkc", "amlogic,meson-gx-aoclkc"; #clock-cells = <1>; #reset-cells = <1>; }; +}; Example: UART controller node that consumes the clock and reset generated by the clock controller: diff --git a/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt index 606da38c0959..c858fd64f680 100644 --- a/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt +++ b/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt @@ -16,18 +16,25 @@ Required Properties: mapped region. - #clock-cells: should be 1. +- #reset-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/meson8b-clkc.h header and can be used in device tree sources. +Similarly a preprocessor macro for each reset line is defined in +dt-bindings/reset/amlogic,meson8b-clkc-reset.h (which can be used from the +device tree sources). + + Example: Clock controller node: clkc: clock-controller@c1104000 { - #clock-cells = <1>; compatible = "amlogic,meson8b-clkc"; reg = <0xc1108000 0x4>, <0xc1104000 0x460>; + #clock-cells = <1>; + #reset-cells = <1>; }; |