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authorVaibhav Hiremath <hvaibhav@ti.com>2013-05-17 14:13:41 +0400
committerTony Lindgren <tony@atomide.com>2013-06-18 14:04:07 +0400
commit7bcad170154f1302aeeced4f236588091a261fbf (patch)
tree19f6074a8fffab88ee6c2fbbcc86ba2102f0430b /arch/arm/mach-omap2
parentc3ed359c66d49ed59139c61a6284452e94efb215 (diff)
downloadlinux-7bcad170154f1302aeeced4f236588091a261fbf.tar.xz
ARM: OMAP3+: am33xx id: Add new am33xx specific function to check dev_feature
Layout of DEV_FEATURE register (offset = 0x604) is different between TI81xx and AM33xx device, so create separate function which will check for features available on specific AM33xx SoC and set the flags accordingly. Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r--arch/arm/mach-omap2/control.h4
-rw-r--r--arch/arm/mach-omap2/id.c13
-rw-r--r--arch/arm/mach-omap2/io.c2
-rw-r--r--arch/arm/mach-omap2/soc.h1
4 files changed, 19 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index 35d17a6ec06b..f7d7c2ef1b40 100644
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h
@@ -366,6 +366,10 @@
#define AM33XX_PWMSS1_TBCLKEN_SHIFT 1
#define AM33XX_PWMSS2_TBCLKEN_SHIFT 2
+/* DEV Feature register to identify AM33XX features */
+#define AM33XX_DEV_FEATURE 0x604
+#define AM33XX_SGX_MASK BIT(29)
+
/* CONTROL OMAP STATUS register to identify OMAP3 features */
#define OMAP3_CONTROL_OMAP_STATUS 0x044c
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 9e5c7cb4a81a..7335eb2bf3fa 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -304,6 +304,19 @@ void __init ti81xx_check_features(void)
omap3_cpuinfo();
}
+void __init am33xx_check_features(void)
+{
+ u32 status;
+
+ omap_features = OMAP3_HAS_NEON;
+
+ status = omap_ctrl_readl(AM33XX_DEV_FEATURE);
+ if (status & AM33XX_SGX_MASK)
+ omap_features |= OMAP3_HAS_SGX;
+
+ omap3_cpuinfo();
+}
+
void __init omap3xxx_check_revision(void)
{
const char *cpu_rev;
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index f96215075b92..4c7367404b89 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -576,7 +576,7 @@ void __init am33xx_init_early(void)
omap2_set_globals_prm(AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE));
omap2_set_globals_cm(AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE), NULL);
omap3xxx_check_revision();
- ti81xx_check_features();
+ am33xx_check_features();
am33xx_voltagedomains_init();
am33xx_powerdomains_init();
am33xx_clockdomains_init();
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index 9cd9414a0afd..8c616e436bc7 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -449,6 +449,7 @@ void omap4xxx_check_revision(void);
void omap5xxx_check_revision(void);
void omap3xxx_check_features(void);
void ti81xx_check_features(void);
+void am33xx_check_features(void);
void omap4xxx_check_features(void);
/*