Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit db408023 authored by Ajay Kumar Gupta's avatar Ajay Kumar Gupta Committed by Tony Lindgren
Browse files

omap3evm: Add board revision function 



Added function to differentiate between the OMAP3EVM revisions. The
chip-id of the ethernet PHY is being used for this purpose.

Rev A to D : 0x01150000
Rev >= E   : 0x92200000

Signed-off-by: default avatarVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: default avatarAjay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: default avatarSanjeev Premi <premi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 50a1f7bf

arch/arm/mach-omap2/board-omap3evm.c

+35 −0
Original line number Original line Diff line number Diff line
@@ -46,9 +46,42 @@ 




#define OMAP3EVM_ETHR_START	0x2c000000

#define OMAP3EVM_ETHR_START	0x2c000000

#define OMAP3EVM_ETHR_SIZE	1024

#define OMAP3EVM_ETHR_SIZE	1024

#define OMAP3EVM_ETHR_ID_REV	0x50

#define OMAP3EVM_ETHR_GPIO_IRQ	176

#define OMAP3EVM_ETHR_GPIO_IRQ	176

#define OMAP3EVM_SMC911X_CS	5

#define OMAP3EVM_SMC911X_CS	5





static u8 omap3_evm_version;



u8 get_omap3_evm_rev(void)

{

	return omap3_evm_version;

}

EXPORT_SYMBOL(get_omap3_evm_rev);



static void __init omap3_evm_get_revision(void)

{

	void __iomem *ioaddr;

	unsigned int smsc_id;



	/* Ethernet PHY ID is stored at ID_REV register */

	ioaddr = ioremap_nocache(OMAP3EVM_ETHR_START, SZ_1K);

	if (!ioaddr)

		return;

	smsc_id = readl(ioaddr + OMAP3EVM_ETHR_ID_REV) & 0xFFFF0000;

	iounmap(ioaddr);



	switch (smsc_id) {

	/*SMSC9115 chipset*/

	case 0x01150000:

		omap3_evm_version = OMAP3EVM_BOARD_GEN_1;

		break;

	/*SMSC 9220 chipset*/

	case 0x92200000:

	default:

		omap3_evm_version = OMAP3EVM_BOARD_GEN_2;

	}

}



static struct resource omap3evm_smc911x_resources[] = {

static struct resource omap3evm_smc911x_resources[] = {

	[0] =	{

	[0] =	{

		.start	= OMAP3EVM_ETHR_START,

		.start	= OMAP3EVM_ETHR_START,
@@ -321,6 +354,8 @@ static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = { 




static void __init omap3_evm_init(void)

static void __init omap3_evm_init(void)

{

{

	omap3_evm_get_revision();



	omap3_evm_i2c_init();

	omap3_evm_i2c_init();





	platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));

	platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));

arch/arm/plat-omap/include/plat/board.h

+18 −0
Original line number Original line Diff line number Diff line
@@ -14,6 +14,18 @@ 




#include <plat/gpio-switch.h>

#include <plat/gpio-switch.h>





/*

 * OMAP35x EVM revision

 * Run time detection of EVM revision is done by reading Ethernet

 * PHY ID -

 *	GEN_1	= 0x01150000

 *	GEN_2	= 0x92200000

 */

enum {

	OMAP3EVM_BOARD_GEN_1 = 0,	/* EVM Rev between  A - D */

	OMAP3EVM_BOARD_GEN_2,		/* EVM Rev >= Rev E */

};



/* Different peripheral ids */

/* Different peripheral ids */

#define OMAP_TAG_CLOCK		0x4f01

#define OMAP_TAG_CLOCK		0x4f01

#define OMAP_TAG_LCD		0x4f05

#define OMAP_TAG_LCD		0x4f05
@@ -157,4 +169,10 @@ extern int omap_board_config_size; 
/* for TI reference platforms sharing the same debug card */

/* for TI reference platforms sharing the same debug card */

extern int debug_card_init(u32 addr, unsigned gpio);

extern int debug_card_init(u32 addr, unsigned gpio);





/* OMAP3EVM revision */

#if defined(CONFIG_MACH_OMAP3EVM)

u8 get_omap3_evm_rev(void);

#else

#define get_omap3_evm_rev() (-EINVAL)

#endif

#endif
 
#endif