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>

diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index ef149f59929ae394a30695fa0940060acef15817..43f17b51ee89cca00a0b2eebb7ed045d49de03a0 100644 (file)
--- 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 1dec2b4bc5e6ea70696249d6815dfe69e73eb21c..eca10b8baea5a465fede1edf421a7475fae14773 100644 (file)
--- 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