81 строка
1.9 KiB
Plaintext
81 строка
1.9 KiB
Plaintext
Clock bindings for ST-Ericsson U300 System Controller Clocks
|
|
|
|
Bindings for the gated system controller clocks:
|
|
|
|
Required properties:
|
|
- compatible: must be "stericsson,u300-syscon-clk"
|
|
- #clock-cells: must be <0>
|
|
- clock-type: specifies the type of clock:
|
|
0 = slow clock
|
|
1 = fast clock
|
|
2 = rest/remaining clock
|
|
- clock-id: specifies the clock in the type range
|
|
|
|
Optional properties:
|
|
- clocks: parent clock(s)
|
|
|
|
The available clocks per type are as follows:
|
|
|
|
Type: ID: Clock:
|
|
-------------------
|
|
0 0 Slow peripheral bridge clock
|
|
0 1 UART0 clock
|
|
0 4 GPIO clock
|
|
0 6 RTC clock
|
|
0 7 Application timer clock
|
|
0 8 Access timer clock
|
|
|
|
1 0 Fast peripheral bridge clock
|
|
1 1 I2C bus 0 clock
|
|
1 2 I2C bus 1 clock
|
|
1 5 MMC interface peripheral (silicon) clock
|
|
1 6 SPI clock
|
|
|
|
2 3 CPU clock
|
|
2 4 DMA controller clock
|
|
2 5 External Memory Interface (EMIF) clock
|
|
2 6 NAND flask interface clock
|
|
2 8 XGAM graphics engine clock
|
|
2 9 Shared External Memory Interface (SEMI) clock
|
|
2 10 AHB Subsystem Bridge clock
|
|
2 12 Interrupt controller clock
|
|
|
|
Example:
|
|
|
|
gpio_clk: gpio_clk@13M {
|
|
#clock-cells = <0>;
|
|
compatible = "stericsson,u300-syscon-clk";
|
|
clock-type = <0>; /* Slow */
|
|
clock-id = <4>;
|
|
clocks = <&slow_clk>;
|
|
};
|
|
|
|
gpio: gpio@c0016000 {
|
|
compatible = "stericsson,gpio-coh901";
|
|
(...)
|
|
clocks = <&gpio_clk>;
|
|
};
|
|
|
|
|
|
Bindings for the MMC/SD card clock:
|
|
|
|
Required properties:
|
|
- compatible: must be "stericsson,u300-syscon-mclk"
|
|
- #clock-cells: must be <0>
|
|
|
|
Optional properties:
|
|
- clocks: parent clock(s)
|
|
|
|
mmc_mclk: mmc_mclk {
|
|
#clock-cells = <0>;
|
|
compatible = "stericsson,u300-syscon-mclk";
|
|
clocks = <&mmc_pclk>;
|
|
};
|
|
|
|
mmcsd: mmcsd@c0001000 {
|
|
compatible = "arm,pl18x", "arm,primecell";
|
|
clocks = <&mmc_pclk>, <&mmc_mclk>;
|
|
clock-names = "apb_pclk", "mclk";
|
|
(...)
|
|
};
|