linux-kernel - Re: [PATCH] ARC: [plat-hsdk] Enable DW APB GPIO support

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Message-ID: <0f3fcfcf-6a3d-1277-cee8-91f27f0a3c06@synopsys.com>
Date:   Tue, 30 Oct 2018 10:25:34 -0700
From:   Vineet Gupta <vineet.gupta1@...opsys.com>
To:     Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        <linux-snps-arc@...ts.infradead.org>
CC:     <linux-kernel@...r.kernel.org>,
        Alexey Brodkin <alexey.brodkin@...opsys.com>
Subject: Re: [PATCH] ARC: [plat-hsdk] Enable DW APB GPIO support

On 10/23/18 5:09 AM, Eugeniy Paltsev wrote:
> 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@...opsys.com>

@Alexey, u happy with this ?

-Vineet

> ---
>  arch/arc/boot/dts/hsdk.dts      | 15 +++++++++++++++
>  arch/arc/configs/hsdk_defconfig |  3 +++
>  2 files changed, 18 insertions(+)
> 
> 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@...0 {
> +			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@...00000 {
> 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
>