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
......@@ -46,9 +46,42 @@
#define OMAP3EVM_ETHR_START 0x2c000000
#define OMAP3EVM_ETHR_SIZE 1024
#define OMAP3EVM_ETHR_ID_REV 0x50
#define OMAP3EVM_ETHR_GPIO_IRQ 176
#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[] = {
[0] = {
.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)
{
omap3_evm_get_revision();
omap3_evm_i2c_init();
platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
......
......@@ -14,6 +14,18 @@
#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 */
#define OMAP_TAG_CLOCK 0x4f01
#define OMAP_TAG_LCD 0x4f05
......@@ -157,4 +169,10 @@ extern int omap_board_config_size;
/* for TI reference platforms sharing the same debug card */
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
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment