ARC: [plat-hsdk] Enable DW APB GPIO support

Enable GPIO support on HSDK. HSDK SoC includes Synopsys
DesignWare DW_apb_gpio IP with 24 GPIOs mapped onto port A.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

2 files changed, 18 insertions, 0 deletions

diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index ef149f59929a..43f17b51ee89 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -222,6 +222,21 @@
                         bus-width = <4>;
                         dma-coherent;
                 };
+
+                gpio: gpio@3000 {
+                        compatible = "snps,dw-apb-gpio";
+                        reg = <0x3000 0x20>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        gpio_port_a: gpio-controller@0 {
+                                compatible = "snps,dw-apb-gpio-port";
+                                gpio-controller;
+                                #gpio-cells = <2>;
+                                snps,nr-gpios = <24>;
+                                reg = <0>;
+                        };
+                };
         };
 
         memory@80000000 {
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index 1dec2b4bc5e6..eca10b8baea5 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -45,6 +45,9 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_DWAPB=y
 # CONFIG_HWMON is not set
 CONFIG_DRM=y
 # CONFIG_DRM_FBDEV_EMULATION is not set