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e2872090ca
If "efm32,location" property is not provided, keeping what is already configured in the hardware, so its either the reset default 0 or whatever the bootloader did. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
41 lines
1.1 KiB
Plaintext
41 lines
1.1 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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- efm32,location: Value to write to the ROUTE register's LOCATION bitfield to
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configure the pinmux for the device, see datasheet for values.
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If "efm32,location" property is not provided, keeping what is
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already configured in the hardware, so its either the reset
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default 0 or whatever the bootloader did.
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Example:
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spi1: spi@0x4000c400 { /* 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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efm32,location = <1>;
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status = "ok";
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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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status = "ok";
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};
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};
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