Commit a8a36a23 authored by Michael Hope's avatar Michael Hope Committed by Kumar Gala
Browse files

spi: sam0: use Device Tree for configuration. 



Switch the SoC device tree to define a single entry per SERCOM instead
of one per mode.

Define a Device Tree binding for the SAM0 SPI and use it instead of
Kconfig for enabling / disabaling instances

Switch the Arduino Zero, Adafruit Feather M0 Basic Proto, and
Trinket M0 to use the new defintion.

Add the APA102 LED that's on the Trinket as a test.

Signed-off-by: default avatarMichael Hope <mlhx@google.com>
Signed-off-by: default avatarKumar Gala <kumar.gala@linaro.org>
parent c83f0782

arch/arm/soc/atmel_sam0/samd21/dts.fixup

+18 −0
Original line number Diff line number Diff line
@@ -45,6 +45,24 @@ 
#define CONFIG_UART_SAM0_SERCOM5_LABEL ATMEL_SAM0_UART_42001C00_LABEL

#define CONFIG_UART_SAM0_SERCOM5_BASE_ADDRESS ATMEL_SAM0_UART_42001C00_BASE_ADDRESS



#define CONFIG_SPI_SAM0_SERCOM0_LABEL ATMEL_SAM0_SPI_42000800_LABEL

#define CONFIG_SPI_SAM0_SERCOM0_BASE_ADDRESS ATMEL_SAM0_SPI_42000800_BASE_ADDRESS



#define CONFIG_SPI_SAM0_SERCOM1_LABEL ATMEL_SAM0_SPI_42000C00_LABEL

#define CONFIG_SPI_SAM0_SERCOM1_BASE_ADDRESS ATMEL_SAM0_SPI_42000C00_BASE_ADDRESS



#define CONFIG_SPI_SAM0_SERCOM2_LABEL ATMEL_SAM0_SPI_42001000_LABEL

#define CONFIG_SPI_SAM0_SERCOM2_BASE_ADDRESS ATMEL_SAM0_SPI_42001000_BASE_ADDRESS



#define CONFIG_SPI_SAM0_SERCOM3_LABEL ATMEL_SAM0_SPI_42001400_LABEL

#define CONFIG_SPI_SAM0_SERCOM3_BASE_ADDRESS ATMEL_SAM0_SPI_42001400_BASE_ADDRESS



#define CONFIG_SPI_SAM0_SERCOM4_LABEL ATMEL_SAM0_SPI_42001800_LABEL

#define CONFIG_SPI_SAM0_SERCOM4_BASE_ADDRESS ATMEL_SAM0_SPI_42001800_BASE_ADDRESS



#define CONFIG_SPI_SAM0_SERCOM5_LABEL ATMEL_SAM0_SPI_42001C00_LABEL

#define CONFIG_SPI_SAM0_SERCOM5_BASE_ADDRESS ATMEL_SAM0_SPI_42001C00_BASE_ADDRESS



#define CONFIG_WDT_SAM0_IRQ ATMEL_SAM0_WATCHDOG_40001000_IRQ_0

#define CONFIG_WDT_SAM0_IRQ_PRIORITY ATMEL_SAM0_WATCHDOG_40001000_IRQ_0_PRIORITY

#define CONFIG_WDT_SAM0_LABEL ATMEL_SAM0_WATCHDOG_40001000_LABEL

boards/arm/adafruit_feather_m0_basic_proto/adafruit_feather_m0_basic_proto.dts

+5 −1
Original line number Diff line number Diff line
@@ -22,11 +22,15 @@ 


&sercom0 {

	status = "ok";

	compatible = "atmel,sam0-uart";

	current-speed = <115200>;

};



&spi4 {

&sercom4 {

	status = "ok";

	compatible = "atmel,sam0-spi";

	#address-cells = <1>;

	#size-cells = <0>;

};



&flash0 {

boards/arm/adafruit_feather_m0_basic_proto/adafruit_feather_m0_basic_proto_defconfig

+0 −2
Original line number Diff line number Diff line
@@ -17,7 +17,5 @@ CONFIG_SOC_ATMEL_SAMD_XOSC32K=y 
CONFIG_SOC_ATMEL_SAMD_XOSC32K_AS_MAIN=y

CONFIG_SPI=y

CONFIG_SPI_SAM0=y

CONFIG_SPI_4=y

CONFIG_SPI_LEGACY_API=n

CONFIG_PINMUX=y

CONFIG_PINMUX_SAM0=y

boards/arm/adafruit_trinket_m0/adafruit_trinket_m0.dts

+13 −1
Original line number Diff line number Diff line
@@ -21,17 +21,29 @@ 


&sercom0 {

	status = "ok";

	compatible = "atmel,sam0-uart";

	current-speed = <115200>;

};



&sercom2 {

	status = "ok";

	compatible = "atmel,sam0-uart";

	current-speed = <115200>;

};



/* Drives the on-board DotStar LED */

&spi1 {

&sercom1 {

	status = "ok";

	compatible = "atmel,sam0-spi";

	#address-cells = <1>;

	#size-cells = <0>;



	led1: apa102@0 {

		compatible = "apa,apa102";

		reg = <0>;

		spi-max-frequency = <24000000>;

		label = "LED1";

	};

};



&flash0 {

boards/arm/adafruit_trinket_m0/adafruit_trinket_m0_defconfig

+0 −2
Original line number Diff line number Diff line
@@ -16,8 +16,6 @@ CONFIG_WATCHDOG=y 
CONFIG_WDT_SAM0=y

CONFIG_SPI=y

CONFIG_SPI_SAM0=y

CONFIG_SPI_1=y

CONFIG_SPI_1_IRQ_PRI=0

CONFIG_SPI_LEGACY_API=n

CONFIG_PINMUX=y

CONFIG_PINMUX_SAM0=y

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