ARC: [plat-hsdk]: enable DW SPI controller
HSDK SoC has DW SPI controller. Enable it in preparation of
enabling on-board SPI peripherals.
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index 9a45cb0..bfc7f5f 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -8,6 +8,7 @@
*/
/dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/reset/snps,hsdk-reset.h>
/ {
@@ -252,6 +253,19 @@
dma-coherent;
};
+ spi0: spi@20000 {
+ compatible = "snps,dw-apb-ssi";
+ reg = <0x20000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <16>;
+ num-cs = <2>;
+ reg-io-width = <4>;
+ clocks = <&input_clk>;
+ cs-gpios = <&creg_gpio 0 GPIO_ACTIVE_LOW>,
+ <&creg_gpio 1 GPIO_ACTIVE_LOW>;
+ };
+
creg_gpio: gpio@14b0 {
compatible = "snps,creg-gpio-hsdk";
reg = <0x14b0 0x4>;
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index c8fb5d6..d01b567 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -46,6 +46,9 @@
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
+CONFIG_SPI=y
+CONFIG_SPI_DESIGNWARE=y
+CONFIG_SPI_DW_MMIO=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_DWAPB=y