linux-kernel - Re: [PATCH v5 2/5] ARM: davinci: da8xx: Add CFGCHIP syscon platform declaration.

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Date:	Tue, 10 May 2016 14:26:05 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	David Lechner <david@...hnology.com>, nsekhar@...com,
	khilman@...nel.org
Cc:	petr@...ix.com, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Kishon Vijay Abraham I <kishon@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alan Stern <stern@...land.harvard.edu>, Bin Liu <b-liu@...com>,
	Lee Jones <lee.jones@...aro.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v5 2/5] ARM: davinci: da8xx: Add CFGCHIP syscon platform
 declaration.

On 5/10/2016 2:46 AM, David Lechner wrote:

> The CFGCHIP registers are used by a number of devices, so using a syscon
> device to share them. The first consumer of this will by the phy-da8xx-usb
> driver.
>
> Signed-off-by: David Lechner <david@...hnology.com>
[...]
> diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
> index 725e693..69d11a1 100644
> --- a/arch/arm/mach-davinci/devices-da8xx.c
> +++ b/arch/arm/mach-davinci/devices-da8xx.c
> @@ -11,6 +11,7 @@
>   * (at your option) any later version.
>   */
>  #include <linux/init.h>
> +#include <linux/platform_data/syscon.h>
>  #include <linux/platform_device.h>
>  #include <linux/dma-contiguous.h>
>  #include <linux/serial_8250.h>
> @@ -1109,3 +1110,30 @@ int __init da850_register_sata(unsigned long refclkpn)
>  	return platform_device_register(&da850_sata_device);
>  }
>  #endif
> +
> +static struct syscon_platform_data da8xx_cfgchip_platform_data = {
> +	.label	= "cfgchip",
> +};
> +
> +static struct resource da8xx_cfgchip_resources[] = {
> +	{
> +		.start	= DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP0_REG,
> +		.end	= DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP4_REG + 3,
> +		.flags	= IORESOURCE_MEM,
> +	},
> +};
> +
> +static struct platform_device da8xx_cfgchip_device = {
> +	.name	= "syscon",
> +	.id	= 0,

    Again, -1.

[...]

MBR, Sergei