mirror of https://gitee.com/openkylin/linux.git
173 lines
6.8 KiB
Plaintext
173 lines
6.8 KiB
Plaintext
Device Tree Clock bindings for arch-sunxi
|
|
|
|
This binding uses the common clock binding[1].
|
|
|
|
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
|
|
|
|
Required properties:
|
|
- compatible : shall be one of the following:
|
|
"allwinner,sun4i-a10-osc-clk" - for a gatable oscillator
|
|
"allwinner,sun4i-a10-pll1-clk" - for the main PLL clock and PLL4
|
|
"allwinner,sun6i-a31-pll1-clk" - for the main PLL clock on A31
|
|
"allwinner,sun8i-a23-pll1-clk" - for the main PLL clock on A23
|
|
"allwinner,sun9i-a80-pll4-clk" - for the peripheral PLLs on A80
|
|
"allwinner,sun4i-a10-pll5-clk" - for the PLL5 clock
|
|
"allwinner,sun4i-a10-pll6-clk" - for the PLL6 clock
|
|
"allwinner,sun6i-a31-pll6-clk" - for the PLL6 clock on A31
|
|
"allwinner,sun9i-a80-gt-clk" - for the GT bus clock on A80
|
|
"allwinner,sun4i-a10-cpu-clk" - for the CPU multiplexer clock
|
|
"allwinner,sun4i-a10-axi-clk" - for the AXI clock
|
|
"allwinner,sun8i-a23-axi-clk" - for the AXI clock on A23
|
|
"allwinner,sun4i-a10-axi-gates-clk" - for the AXI gates
|
|
"allwinner,sun4i-a10-ahb-clk" - for the AHB clock
|
|
"allwinner,sun9i-a80-ahb-clk" - for the AHB bus clocks on A80
|
|
"allwinner,sun4i-a10-ahb-gates-clk" - for the AHB gates on A10
|
|
"allwinner,sun5i-a13-ahb-gates-clk" - for the AHB gates on A13
|
|
"allwinner,sun5i-a10s-ahb-gates-clk" - for the AHB gates on A10s
|
|
"allwinner,sun7i-a20-ahb-gates-clk" - for the AHB gates on A20
|
|
"allwinner,sun6i-a31-ar100-clk" - for the AR100 on A31
|
|
"allwinner,sun6i-a31-ahb1-mux-clk" - for the AHB1 multiplexer on A31
|
|
"allwinner,sun6i-a31-ahb1-gates-clk" - for the AHB1 gates on A31
|
|
"allwinner,sun8i-a23-ahb1-gates-clk" - for the AHB1 gates on A23
|
|
"allwinner,sun9i-a80-ahb0-gates-clk" - for the AHB0 gates on A80
|
|
"allwinner,sun9i-a80-ahb1-gates-clk" - for the AHB1 gates on A80
|
|
"allwinner,sun9i-a80-ahb2-gates-clk" - for the AHB2 gates on A80
|
|
"allwinner,sun4i-a10-apb0-clk" - for the APB0 clock
|
|
"allwinner,sun6i-a31-apb0-clk" - for the APB0 clock on A31
|
|
"allwinner,sun8i-a23-apb0-clk" - for the APB0 clock on A23
|
|
"allwinner,sun9i-a80-apb0-clk" - for the APB0 bus clock on A80
|
|
"allwinner,sun4i-a10-apb0-gates-clk" - for the APB0 gates on A10
|
|
"allwinner,sun5i-a13-apb0-gates-clk" - for the APB0 gates on A13
|
|
"allwinner,sun5i-a10s-apb0-gates-clk" - for the APB0 gates on A10s
|
|
"allwinner,sun6i-a31-apb0-gates-clk" - for the APB0 gates on A31
|
|
"allwinner,sun7i-a20-apb0-gates-clk" - for the APB0 gates on A20
|
|
"allwinner,sun8i-a23-apb0-gates-clk" - for the APB0 gates on A23
|
|
"allwinner,sun9i-a80-apb0-gates-clk" - for the APB0 gates on A80
|
|
"allwinner,sun4i-a10-apb1-clk" - for the APB1 clock
|
|
"allwinner,sun9i-a80-apb1-clk" - for the APB1 bus clock on A80
|
|
"allwinner,sun4i-a10-apb1-gates-clk" - for the APB1 gates on A10
|
|
"allwinner,sun5i-a13-apb1-gates-clk" - for the APB1 gates on A13
|
|
"allwinner,sun5i-a10s-apb1-gates-clk" - for the APB1 gates on A10s
|
|
"allwinner,sun6i-a31-apb1-gates-clk" - for the APB1 gates on A31
|
|
"allwinner,sun7i-a20-apb1-gates-clk" - for the APB1 gates on A20
|
|
"allwinner,sun8i-a23-apb1-gates-clk" - for the APB1 gates on A23
|
|
"allwinner,sun9i-a80-apb1-gates-clk" - for the APB1 gates on A80
|
|
"allwinner,sun6i-a31-apb2-gates-clk" - for the APB2 gates on A31
|
|
"allwinner,sun8i-a23-apb2-gates-clk" - for the APB2 gates on A23
|
|
"allwinner,sun5i-a13-mbus-clk" - for the MBUS clock on A13
|
|
"allwinner,sun4i-a10-mmc-output-clk" - for the MMC output clock on A10
|
|
"allwinner,sun4i-a10-mmc-sample-clk" - for the MMC sample clock on A10
|
|
"allwinner,sun4i-a10-mod0-clk" - for the module 0 family of clocks
|
|
"allwinner,sun8i-a23-mbus-clk" - for the MBUS clock on A23
|
|
"allwinner,sun7i-a20-out-clk" - for the external output clocks
|
|
"allwinner,sun7i-a20-gmac-clk" - for the GMAC clock module on A20/A31
|
|
"allwinner,sun4i-a10-usb-clk" - for usb gates + resets on A10 / A20
|
|
"allwinner,sun5i-a13-usb-clk" - for usb gates + resets on A13
|
|
"allwinner,sun6i-a31-usb-clk" - for usb gates + resets on A31
|
|
|
|
Required properties for all clocks:
|
|
- reg : shall be the control register address for the clock.
|
|
- clocks : shall be the input parent clock(s) phandle for the clock. For
|
|
multiplexed clocks, the list order must match the hardware
|
|
programming order.
|
|
- #clock-cells : from common clock binding; shall be set to 0 except for
|
|
the following compatibles where it shall be set to 1:
|
|
"allwinner,*-gates-clk", "allwinner,sun4i-pll5-clk",
|
|
"allwinner,sun4i-pll6-clk", "allwinner,sun6i-a31-pll6-clk"
|
|
- clock-output-names : shall be the corresponding names of the outputs.
|
|
If the clock module only has one output, the name shall be the
|
|
module name.
|
|
|
|
And "allwinner,*-usb-clk" clocks also require:
|
|
- reset-cells : shall be set to 1
|
|
|
|
For "allwinner,sun7i-a20-gmac-clk", the parent clocks shall be fixed rate
|
|
dummy clocks at 25 MHz and 125 MHz, respectively. See example.
|
|
|
|
Clock consumers should specify the desired clocks they use with a
|
|
"clocks" phandle cell. Consumers that are using a gated clock should
|
|
provide an additional ID in their clock property. This ID is the
|
|
offset of the bit controlling this particular gate in the register.
|
|
For the other clocks with "#clock-cells" = 1, the additional ID shall
|
|
refer to the index of the output.
|
|
|
|
For "allwinner,sun6i-a31-pll6-clk", there are 2 outputs. The first output
|
|
is the normal PLL6 output, or "pll6". The second output is rate doubled
|
|
PLL6, or "pll6x2".
|
|
|
|
For example:
|
|
|
|
osc24M: clk@01c20050 {
|
|
#clock-cells = <0>;
|
|
compatible = "allwinner,sun4i-a10-osc-clk";
|
|
reg = <0x01c20050 0x4>;
|
|
clocks = <&osc24M_fixed>;
|
|
clock-output-names = "osc24M";
|
|
};
|
|
|
|
pll1: clk@01c20000 {
|
|
#clock-cells = <0>;
|
|
compatible = "allwinner,sun4i-a10-pll1-clk";
|
|
reg = <0x01c20000 0x4>;
|
|
clocks = <&osc24M>;
|
|
clock-output-names = "pll1";
|
|
};
|
|
|
|
pll5: clk@01c20020 {
|
|
#clock-cells = <1>;
|
|
compatible = "allwinner,sun4i-pll5-clk";
|
|
reg = <0x01c20020 0x4>;
|
|
clocks = <&osc24M>;
|
|
clock-output-names = "pll5_ddr", "pll5_other";
|
|
};
|
|
|
|
pll6: clk@01c20028 {
|
|
#clock-cells = <1>;
|
|
compatible = "allwinner,sun6i-a31-pll6-clk";
|
|
reg = <0x01c20028 0x4>;
|
|
clocks = <&osc24M>;
|
|
clock-output-names = "pll6", "pll6x2";
|
|
};
|
|
|
|
cpu: cpu@01c20054 {
|
|
#clock-cells = <0>;
|
|
compatible = "allwinner,sun4i-a10-cpu-clk";
|
|
reg = <0x01c20054 0x4>;
|
|
clocks = <&osc32k>, <&osc24M>, <&pll1>;
|
|
clock-output-names = "cpu";
|
|
};
|
|
|
|
mmc0_clk: clk@01c20088 {
|
|
#clock-cells = <0>;
|
|
compatible = "allwinner,sun4i-mod0-clk";
|
|
reg = <0x01c20088 0x4>;
|
|
clocks = <&osc24M>, <&pll6 1>, <&pll5 1>;
|
|
clock-output-names = "mmc0";
|
|
};
|
|
|
|
mii_phy_tx_clk: clk@2 {
|
|
#clock-cells = <0>;
|
|
compatible = "fixed-clock";
|
|
clock-frequency = <25000000>;
|
|
clock-output-names = "mii_phy_tx";
|
|
};
|
|
|
|
gmac_int_tx_clk: clk@3 {
|
|
#clock-cells = <0>;
|
|
compatible = "fixed-clock";
|
|
clock-frequency = <125000000>;
|
|
clock-output-names = "gmac_int_tx";
|
|
};
|
|
|
|
gmac_clk: clk@01c20164 {
|
|
#clock-cells = <0>;
|
|
compatible = "allwinner,sun7i-a20-gmac-clk";
|
|
reg = <0x01c20164 0x4>;
|
|
/*
|
|
* The first clock must be fixed at 25MHz;
|
|
* the second clock must be fixed at 125MHz
|
|
*/
|
|
clocks = <&mii_phy_tx_clk>, <&gmac_int_tx_clk>;
|
|
clock-output-names = "gmac";
|
|
};
|