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Commit 433cdb0a authored by Cyril Chemparathy's avatar Cyril Chemparathy Committed by Kevin Hilman
Browse files

omap: add mdio platform devices 



This patch adds mdio platform devices on SoCs that have the necessary
hardware.  Clock lookup entries (aliases) have also been added, so that the
MDIO and EMAC drivers can independently enable/disable a shared underlying
clock.  Further, the EMAC MMR region has been split down into separate MDIO
and EMAC regions.

Signed-off-by: default avatarCyril Chemparathy <cyril@ti.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent d22960c8

arch/arm/mach-omap2/board-am3517evm.c

+26 −1
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 


#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/clk.h>

#include <linux/platform_device.h>

#include <linux/gpio.h>

#include <linux/i2c/pca953x.h>
@@ -41,6 +42,27 @@ 
#define AM35XX_EVM_PHY_MASK		(0xF)

#define AM35XX_EVM_MDIO_FREQUENCY	(1000000)



static struct mdio_platform_data am3517_evm_mdio_pdata = {

	.bus_freq	= AM35XX_EVM_MDIO_FREQUENCY,

};



static struct resource am3517_mdio_resources[] = {

	{

		.start  = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET,

		.end    = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET +

			  SZ_4K - 1,

		.flags  = IORESOURCE_MEM,

	},

};



static struct platform_device am3517_mdio_device = {

	.name		= "davinci_mdio",

	.id		= 0,

	.num_resources	= ARRAY_SIZE(am3517_mdio_resources),

	.resource	= am3517_mdio_resources,

	.dev.platform_data = &am3517_evm_mdio_pdata,

};



static struct emac_platform_data am3517_evm_emac_pdata = {

	.phy_mask	= AM35XX_EVM_PHY_MASK,

	.mdio_max_freq	= AM35XX_EVM_MDIO_FREQUENCY,
@@ -50,7 +72,7 @@ static struct emac_platform_data am3517_evm_emac_pdata = { 
static struct resource am3517_emac_resources[] = {

	{

		.start  = AM35XX_IPSS_EMAC_BASE,

		.end    = AM35XX_IPSS_EMAC_BASE + 0x3FFFF,

		.end    = AM35XX_IPSS_EMAC_BASE + 0x2FFFF,

		.flags  = IORESOURCE_MEM,

	},

	{
@@ -121,6 +143,9 @@ void am3517_evm_ethernet_init(struct emac_platform_data *pdata) 
	pdata->interrupt_disable	= am3517_disable_ethernet_int;

	am3517_emac_device.dev.platform_data	= pdata;

	platform_device_register(&am3517_emac_device);

	platform_device_register(&am3517_mdio_device);

	clk_add_alias(NULL, dev_name(&am3517_mdio_device.dev),

		      NULL, &am3517_emac_device.dev);



	regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);

	regval = regval & (~(AM35XX_CPGMACSS_SW_RST));