| * Clock bindings for Freescale i.MX7ULP |
| |
| i.MX7ULP Clock functions are under joint control of the System |
| Clock Generation (SCG) modules, Peripheral Clock Control (PCC) |
| modules, and Core Mode Controller (CMC)1 blocks |
| |
| The clocking scheme provides clear separation between M4 domain |
| and A7 domain. Except for a few clock sources shared between two |
| domains, such as the System Oscillator clock, the Slow IRC (SIRC), |
| and and the Fast IRC clock (FIRCLK), clock sources and clock |
| management are separated and contained within each domain. |
| |
| M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules. |
| A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules. |
| |
| Note: this binding doc is only for A7 clock domain. |
| |
| Required properties: |
| |
| - compatible: Should be "fsl,imx7ulp-scg0" or "fsl,imx7ulp-scg1". |
| - reg : Should contain registers location and length. |
| - #clock-cells: Should be <1>. |
| - clocks: Should contain the fixed input clocks. |
| - clock-name: Should contain the following clock names:"cm4_rosc", |
| "cm4_sosc", "cm4_sirc", "cm4_firc" for scg0. |
| Or |
| Should contain the following clock names:"rsoc", "sosc", |
| "sirc", "firc", "upll", "mpll" for scg1. |
| |
| The clock consumer should specify the desired clock by having the clock |
| ID in its "clocks" phandle cell. |
| See include/dt-bindings/clock/imx7ulp-clock.h |
| for the full list of i.MX7ULP clock IDs. |
| |
| Examples: |
| |
| #include <dt-bindings/clock/imx7ulp-clock.h> |
| |
| clks: scg1@403e0000 { |
| compatible = "fsl,imx7ulp-clock"; |
| reg = <0x403e0000 0x10000>; |
| clocks = <&rsoc>, <&sosc>, <&sirc>, |
| <&firc>, <&upll>, <&mpll>; |
| clock-names = "rsoc", "sosc", "sirc", |
| "firc", "upll", "mpll"; |
| #clock-cells = <1>; |
| }; |
| |
| usdhc1: usdhc@40380000 { |
| compatible = "fsl,imx7ulp-usdhc"; |
| reg = <0x40380000 0x10000>; |
| interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&clks IMX7ULP_CLK_NIC1_BUS_DIV>, |
| <&clks IMX7ULP_CLK_NIC1_DIV>, |
| <&clks IMX7ULP_CLK_USDHC1>; |
| clock-names ="ipg", "ahb", "per"; |
| bus-width = <4>; |
| status = "disabled"; |
| }; |