1 Broadcom Kona Family Clocks
3 This binding is associated with Broadcom SoCs having "Kona" style
4 clock control units (CCUs). A CCU is a clock provider that manages
5 a set of clock signals. Each CCU is represented by a node in the
8 This binding uses the common clock binding:
9 Documentation/devicetree/bindings/clock/clock-bindings.txt
13 Shall have one of the following values:
14 - "brcm,bcm11351-root-ccu"
15 - "brcm,bcm11351-aon-ccu"
16 - "brcm,bcm11351-hub-ccu"
17 - "brcm,bcm11351-master-ccu"
18 - "brcm,bcm11351-slave-ccu"
20 Shall define the base and range of the address space
21 containing clock control registers
23 Shall have value <1>. The permitted clock-specifier values
26 Shall be an ordered list of strings defining the names of
27 the clocks provided by the CCU.
30 BCM281XX family SoCs use Kona CCUs. The following table defines
31 the set of CCUs and clock specifiers for BCM281XX clocks. When
32 a clock consumer references a clocks, its symbolic specifier
33 (rather than its numeric index value) should be used. These
34 specifiers are defined in "include/dt-bindings/clock/bcm281xx.h".
36 CCU Clock Type Index Specifier
37 --- ----- ---- ----- ---------
38 root frac_1m peri 0 BCM281XX_ROOT_CCU_FRAC_1M
40 aon hub_timer peri 0 BCM281XX_AON_CCU_HUB_TIMER
41 aon pmu_bsc peri 1 BCM281XX_AON_CCU_PMU_BSC
42 aon pmu_bsc_var peri 2 BCM281XX_AON_CCU_PMU_BSC_VAR
44 hub tmon_1m peri 0 BCM281XX_HUB_CCU_TMON_1M
46 master sdio1 peri 0 BCM281XX_MASTER_CCU_SDIO1
47 master sdio2 peri 1 BCM281XX_MASTER_CCU_SDIO2
48 master sdio3 peri 2 BCM281XX_MASTER_CCU_SDIO3
49 master sdio4 peri 3 BCM281XX_MASTER_CCU_SDIO4
50 master dmac peri 4 BCM281XX_MASTER_CCU_DMAC
51 master usb_ic peri 5 BCM281XX_MASTER_CCU_USB_IC
52 master hsic2_48m peri 6 BCM281XX_MASTER_CCU_HSIC_48M
53 master hsic2_12m peri 7 BCM281XX_MASTER_CCU_HSIC_12M
55 slave uartb peri 0 BCM281XX_SLAVE_CCU_UARTB
56 slave uartb2 peri 1 BCM281XX_SLAVE_CCU_UARTB2
57 slave uartb3 peri 2 BCM281XX_SLAVE_CCU_UARTB3
58 slave uartb4 peri 3 BCM281XX_SLAVE_CCU_UARTB4
59 slave ssp0 peri 4 BCM281XX_SLAVE_CCU_SSP0
60 slave ssp2 peri 5 BCM281XX_SLAVE_CCU_SSP2
61 slave bsc1 peri 6 BCM281XX_SLAVE_CCU_BSC1
62 slave bsc2 peri 7 BCM281XX_SLAVE_CCU_BSC2
63 slave bsc3 peri 8 BCM281XX_SLAVE_CCU_BSC3
64 slave pwm peri 9 BCM281XX_SLAVE_CCU_PWM
69 slave_ccu: slave_ccu {
70 compatible = "brcm,bcm11351-slave-ccu";
71 reg = <0x3e011000 0x0f00>;
73 clock-output-names = "uartb",
79 ref_crystal_clk: ref_crystal {
81 compatible = "fixed-clock";
82 clock-frequency = <26000000>;
86 compatible = "brcm,bcm11351-dw-apb-uart", "snps,dw-apb-uart";
88 reg = <0x3e002000 0x1000>;
89 clocks = <&slave_ccu BCM281XX_SLAVE_CCU_UARTB3>;
90 interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;