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OMAP4: ID: add omap_has_feature for max freq supported 

Macros for identifying the max frequency supported by various
OMAP4 variants - Expanding along the lines of OMAP3's feature
handling.

[nm@ti.com: minor fixes for checks that should only for 443x|446x]
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Aneesh V 2011-07-02 08:00:22 +05:30 committed by Tony Lindgren
parent fa54dccddc
commit cc0170b2d9
2 changed files with 54 additions and 9 deletions
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40
arch/arm/mach-omap2/id.c
View File

@ -31,7 +31,7 @@
static struct omap_chip_id omap_chip;
static unsigned int omap_revision;
u32 omap3_features;
u32 omap_features;
unsigned int omap_rev(void)
{
@ -183,14 +183,14 @@ static void __init omap24xx_check_revision(void)
#define OMAP3_CHECK_FEATURE(status,feat) \
if (((status & OMAP3_ ##feat## _MASK) \
>> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \
omap3_features |= OMAP3_HAS_ ##feat; \
omap_features |= OMAP3_HAS_ ##feat; \
}
static void __init omap3_check_features(void)
{
u32 status;
omap3_features = 0;
omap_features = 0;
status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS);
@ -200,11 +200,11 @@ static void __init omap3_check_features(void)
OMAP3_CHECK_FEATURE(status, NEON);
OMAP3_CHECK_FEATURE(status, ISP);
if (cpu_is_omap3630())
omap3_features |= OMAP3_HAS_192MHZ_CLK;
omap_features |= OMAP3_HAS_192MHZ_CLK;
if (!cpu_is_omap3505() && !cpu_is_omap3517())
omap3_features |= OMAP3_HAS_IO_WAKEUP;
omap_features |= OMAP3_HAS_IO_WAKEUP;
omap3_features |= OMAP3_HAS_SDRC;
omap_features |= OMAP3_HAS_SDRC;
/*
* TODO: Get additional info (where applicable)
@ -212,9 +212,34 @@ static void __init omap3_check_features(void)
*/
}
static void __init omap4_check_features(void)
{
u32 si_type;
if (cpu_is_omap443x())
omap_features |= OMAP4_HAS_MPU_1GHZ;
if (cpu_is_omap446x()) {
si_type =
read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1);
switch ((si_type & (3 << 16)) >> 16) {
case 2:
/* High performance device */
omap_features |= OMAP4_HAS_MPU_1_5GHZ;
break;
case 1:
default:
/* Standard device */
omap_features |= OMAP4_HAS_MPU_1_2GHZ;
break;
}
}
}
static void __init ti816x_check_features(void)
{
omap3_features = OMAP3_HAS_NEON;
omap_features = OMAP3_HAS_NEON;
}
static void __init omap3_check_revision(void)
@ -527,6 +552,7 @@ void __init omap2_check_revision(void)
return;
} else if (cpu_is_omap44xx()) {
omap4_check_revision();
omap4_check_features();
return;
} else {
pr_err("OMAP revision unknown, please fix!\n");

23
arch/arm/plat-omap/include/plat/cpu.h
View File

@ -478,7 +478,7 @@ void omap2_check_revision(void);
/*
* Runtime detection of OMAP3 features
*/
extern u32 omap3_features;
extern u32 omap_features;
#define OMAP3_HAS_L2CACHE BIT(0)
#define OMAP3_HAS_IVA BIT(1)
@ -488,11 +488,15 @@ extern u32 omap3_features;
#define OMAP3_HAS_192MHZ_CLK BIT(5)
#define OMAP3_HAS_IO_WAKEUP BIT(6)
#define OMAP3_HAS_SDRC BIT(7)
#define OMAP4_HAS_MPU_1GHZ BIT(8)
#define OMAP4_HAS_MPU_1_2GHZ BIT(9)
#define OMAP4_HAS_MPU_1_5GHZ BIT(10)
#define OMAP3_HAS_FEATURE(feat,flag) \
static inline unsigned int omap3_has_ ##feat(void) \
{ \
return (omap3_features & OMAP3_HAS_ ##flag); \
return omap_features & OMAP3_HAS_ ##flag; \
} \
OMAP3_HAS_FEATURE(l2cache, L2CACHE)
@ -504,4 +508,19 @@ OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
OMAP3_HAS_FEATURE(sdrc, SDRC)
/*
* Runtime detection of OMAP4 features
*/
extern u32 omap_features;
#define OMAP4_HAS_FEATURE(feat, flag) \
static inline unsigned int omap4_has_ ##feat(void) \
{ \
return omap_features & OMAP4_HAS_ ##flag; \
} \
OMAP4_HAS_FEATURE(mpu_1ghz, MPU_1GHZ)
OMAP4_HAS_FEATURE(mpu_1_2ghz, MPU_1_2GHZ)
OMAP4_HAS_FEATURE(mpu_1_5ghz, MPU_1_5GHZ)
#endif