Hi Eugeniy,
> -----Original Message-----
> From: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>
> Sent: Friday, June 7, 2019 5:48 PM
> To: linux-snps-arc@xxxxxxxxxxxxxxxxxxx; Vineet Gupta <vgupta@xxxxxxxxxxxx>
> Cc: linux-kernel@xxxxxxxxxxxxxxx; Alexey Brodkin <abrodkin@xxxxxxxxxxxx>; Eugeniy Paltsev
> <Eugeniy.Paltsev@xxxxxxxxxxxx>
> Subject: [PATCH] ARC: [plat-hsdk]: enable DW SPI controller
>
> HSDK SoC has DW SPI controller. Enable it in preparation of
> enabling on-board SPI peripherals.
>
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>
Adding Rob and...
Acked-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
> arch/arc/boot/dts/hsdk.dts | 14 ++++++++++++++
> arch/arc/configs/hsdk_defconfig | 3 +++
> 2 files changed, 17 insertions(+)
>
> diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
> index e57b24dd02e7..42e1c961ba48 100644
> --- a/arch/arc/boot/dts/hsdk.dts
> +++ b/arch/arc/boot/dts/hsdk.dts
> @@ -11,6 +11,7 @@
> */
> /dts-v1/;
>
> +#include <dt-bindings/gpio/gpio.h>
> #include <dt-bindings/reset/snps,hsdk-reset.h>
>
> / {
> @@ -233,6 +234,19 @@
> 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 0c4411f50948..ccfa744fe755 100644
> --- a/arch/arc/configs/hsdk_defconfig
> +++ b/arch/arc/configs/hsdk_defconfig
> @@ -46,6 +46,9 @@ CONFIG_SERIAL_8250_CONSOLE=y
> 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
> --
> 2.21.0
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