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1Clock bindings for ST-Ericsson U300 System Controller Clocks
2
3Bindings for the gated system controller clocks:
4
5Required properties:
6- compatible: must be "stericsson,u300-syscon-clk"
7- #clock-cells: must be <0>
8- clock-type: specifies the type of clock:
9 0 = slow clock
10 1 = fast clock
11 2 = rest/remaining clock
12- clock-id: specifies the clock in the type range
13
14Optional properties:
15- clocks: parent clock(s)
16
17The available clocks per type are as follows:
18
19Type: ID: Clock:
20-------------------
210 0 Slow peripheral bridge clock
220 1 UART0 clock
230 4 GPIO clock
240 6 RTC clock
250 7 Application timer clock
260 8 Access timer clock
27
281 0 Fast peripheral bridge clock
291 1 I2C bus 0 clock
301 2 I2C bus 1 clock
311 5 MMC interface peripheral (silicon) clock
321 6 SPI clock
33
342 3 CPU clock
352 4 DMA controller clock
362 5 External Memory Interface (EMIF) clock
372 6 NAND flask interface clock
382 8 XGAM graphics engine clock
392 9 Shared External Memory Interface (SEMI) clock
402 10 AHB Subsystem Bridge clock
412 12 Interrupt controller clock
42
43Example:
44
45gpio_clk: gpio_clk@13M {
46 #clock-cells = <0>;
47 compatible = "stericsson,u300-syscon-clk";
48 clock-type = <0>; /* Slow */
49 clock-id = <4>;
50 clocks = <&slow_clk>;
51};
52
53gpio: gpio@c0016000 {
54 compatible = "stericsson,gpio-coh901";
55 (...)
56 clocks = <&gpio_clk>;
57};
58
59
60Bindings for the MMC/SD card clock:
61
62Required properties:
63- compatible: must be "stericsson,u300-syscon-mclk"
64- #clock-cells: must be <0>
65
66Optional properties:
67- clocks: parent clock(s)
68
69mmc_mclk: mmc_mclk {
70 #clock-cells = <0>;
71 compatible = "stericsson,u300-syscon-mclk";
72 clocks = <&mmc_pclk>;
73};
74
75mmcsd: mmcsd@c0001000 {
76 compatible = "arm,pl18x", "arm,primecell";
77 clocks = <&mmc_pclk>, <&mmc_mclk>;
78 clock-names = "apb_pclk", "mclk";
79 (...)
80};