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