1 * Core Clock bindings for Marvell MVEBU SoCs
3 Marvell MVEBU SoCs usually allow to determine core clock frequencies by
4 reading the Sample-At-Reset (SAR) register. The core clock consumer should
5 specify the desired clock by having the clock ID in its "clocks" phandle cell.
7 The following is a list of provided IDs and clock names on Armada 370/XP:
8 0 = tclk (Internal Bus clock)
10 2 = nbclk (L2 Cache clock)
11 3 = hclk (DRAM control clock)
12 4 = dramclk (DDR clock)
14 The following is a list of provided IDs and clock names on Armada 375:
15 0 = tclk (Internal Bus clock)
16 1 = cpuclk (CPU clock)
17 2 = l2clk (L2 Cache clock)
18 3 = ddrclk (DDR clock)
20 The following is a list of provided IDs and clock names on Armada 380/385:
21 0 = tclk (Internal Bus clock)
22 1 = cpuclk (CPU clock)
23 2 = l2clk (L2 Cache clock)
24 3 = ddrclk (DDR clock)
26 The following is a list of provided IDs and clock names on Armada 39x:
27 0 = tclk (Internal Bus clock)
28 1 = cpuclk (CPU clock)
29 2 = nbclk (Coherent Fabric clock)
30 3 = hclk (SDRAM Controller Internal Clock)
31 4 = dclk (SDRAM Interface Clock)
32 5 = refclk (Reference Clock)
34 The following is a list of provided IDs and clock names on Kirkwood and Dove:
35 0 = tclk (Internal Bus clock)
36 1 = cpuclk (CPU0 clock)
37 2 = l2clk (L2 Cache clock derived from CPU0 clock)
38 3 = ddrclk (DDR controller clock derived from CPU0 clock)
40 The following is a list of provided IDs and clock names on Orion5x:
41 0 = tclk (Internal Bus clock)
42 1 = cpuclk (CPU0 clock)
43 2 = ddrclk (DDR controller clock derived from CPU0 clock)
46 - compatible : shall be one of the following:
47 "marvell,armada-370-core-clock" - For Armada 370 SoC core clocks
48 "marvell,armada-375-core-clock" - For Armada 375 SoC core clocks
49 "marvell,armada-380-core-clock" - For Armada 380/385 SoC core clocks
50 "marvell,armada-390-core-clock" - For Armada 39x SoC core clocks
51 "marvell,armada-xp-core-clock" - For Armada XP SoC core clocks
52 "marvell,dove-core-clock" - for Dove SoC core clocks
53 "marvell,kirkwood-core-clock" - for Kirkwood SoC (except mv88f6180)
54 "marvell,mv88f6180-core-clock" - for Kirkwood MV88f6180 SoC
55 "marvell,mv88f5182-core-clock" - for Orion MV88F5182 SoC
56 "marvell,mv88f5281-core-clock" - for Orion MV88F5281 SoC
57 "marvell,mv88f6183-core-clock" - for Orion MV88F6183 SoC
58 - reg : shall be the register address of the Sample-At-Reset (SAR) register
59 - #clock-cells : from common clock binding; shall be set to 1
62 - clock-output-names : from common clock binding; allows overwrite default clock
63 output names ("tclk", "cpuclk", "l2clk", "ddrclk")
67 core_clk: core-clocks@d0214 {
68 compatible = "marvell,dove-core-clock";
74 compatible = "marvell,orion-spi";
76 /* get tclk from core clock provider */
77 clocks = <&core_clk 0>;