5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
* Energy Micro EFM32 SPI
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Required properties:
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- #address-cells: see spi-bus.txt
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- #size-cells: see spi-bus.txt
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- compatible: should be "energymicro,efm32-spi"
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- reg: Offset and length of the register set for the controller
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- interrupts: pair specifying rx and tx irq
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- clocks: phandle to the spi clock
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- cs-gpios: see spi-bus.txt
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Recommended properties :
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- energymicro,location: Value to write to the ROUTE register's LOCATION
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bitfield to configure the pinmux for the device, see
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datasheet for values.
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If this property is not provided, keeping what is
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already configured in the hardware, so its either the
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reset default 0 or whatever the bootloader did.
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Example:
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spi1: spi@4000c400 { /* USART1 */
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "energymicro,efm32-spi";
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reg = <0x4000c400 0x400>;
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interrupts = <15 16>;
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clocks = <&cmu 20>;
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cs-gpios = <&gpio 51 1>; // D3
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energymicro,location = <1>;
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ks8851@0 {
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compatible = "ks8851";
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spi-max-frequency = <6000000>;
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reg = <0>;
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interrupt-parent = <&boardfpga>;
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interrupts = <4>;
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};
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};
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