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authorR Sricharan <r.sricharan@ti.com>2013-02-06 18:55:40 +0400
committerRajendra Nayak <rnayak@ti.com>2013-08-13 15:28:08 +0400
commit6852215a32d0f63a0f3497df3b4638f5eac428d3 (patch)
tree2545e0529b6eae0a79919ff1d3b16c495cbb301e /arch
parent6d0fc190c8fa2fded564a159eea4140a13f429a9 (diff)
downloadlinux-6852215a32d0f63a0f3497df3b4638f5eac428d3.tar.xz
ARM: DRA7: id: Add cpu detection support for DRA7xx based SoCs'
The DRA7xx is a high-performance, infotainment application device, based on enhanced OMAP architecture integrated on a 28-nm technology. Since DRA7 is a platform supported only using DT, the cpu detection is based on the compatibles passed from DT blobs as suggested here http://lists.infradead.org/pipermail/linux-arm-kernel/2013-July/187712.html Suggested-by: Felipe Balbi <balbi@ti.com> Signed-off-by: R Sricharan <r.sricharan@ti.com> Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap1/include/mach/soc.h1
-rw-r--r--arch/arm/mach-omap2/id.c4
-rw-r--r--arch/arm/mach-omap2/soc.h17
3 files changed, 20 insertions, 2 deletions
diff --git a/arch/arm/mach-omap1/include/mach/soc.h b/arch/arm/mach-omap1/include/mach/soc.h
index 6cf9c1cc2bef..612bd1cc257c 100644
--- a/arch/arm/mach-omap1/include/mach/soc.h
+++ b/arch/arm/mach-omap1/include/mach/soc.h
@@ -195,6 +195,7 @@ IS_OMAP_TYPE(1710, 0x1710)
#define cpu_is_omap34xx() 0
#define cpu_is_omap44xx() 0
#define soc_is_omap54xx() 0
+#define soc_is_dra7xx() 0
#define soc_is_am33xx() 0
#define cpu_class_is_omap1() 1
#define cpu_class_is_omap2() 0
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 2dc62a25f2c3..0289adcb6efb 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -61,7 +61,7 @@ int omap_type(void)
val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
} else if (cpu_is_omap44xx()) {
val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS);
- } else if (soc_is_omap54xx()) {
+ } else if (soc_is_omap54xx() || soc_is_dra7xx()) {
val = omap_ctrl_readl(OMAP5XXX_CONTROL_STATUS);
val &= OMAP5_DEVICETYPE_MASK;
val >>= 6;
@@ -116,7 +116,7 @@ static u16 tap_prod_id;
void omap_get_die_id(struct omap_die_id *odi)
{
- if (cpu_is_omap44xx() || soc_is_omap54xx()) {
+ if (cpu_is_omap44xx() || soc_is_omap54xx() || soc_is_dra7xx()) {
odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_0);
odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_1);
odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_2);
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index 8c616e436bc7..4588df1447ed 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -8,6 +8,7 @@
* Written by Tony Lindgren <tony.lindgren@nokia.com>
*
* Added OMAP4/5 specific defines - Santosh Shilimkar<santosh.shilimkar@ti.com>
+ * Added DRA7xxx specific defines - Sricharan R<r.sricharan@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -35,6 +36,7 @@
#ifndef __ASSEMBLY__
#include <linux/bitops.h>
+#include <linux/of.h>
/*
* Test if multicore OMAP support is needed
@@ -105,6 +107,15 @@
# endif
#endif
+#ifdef CONFIG_SOC_DRA7XX
+# ifdef OMAP_NAME
+# undef MULTI_OMAP2
+# define MULTI_OMAP2
+# else
+# define OMAP_NAME DRA7XX
+# endif
+#endif
+
/*
* Omap device type i.e. EMU/HS/TST/GP/BAD
*/
@@ -233,6 +244,7 @@ IS_AM_SUBCLASS(437x, 0x437)
#define cpu_is_omap447x() 0
#define soc_is_omap54xx() 0
#define soc_is_omap543x() 0
+#define soc_is_dra7xx() 0
#if defined(MULTI_OMAP2)
# if defined(CONFIG_ARCH_OMAP2)
@@ -379,6 +391,11 @@ IS_OMAP_TYPE(3430, 0x3430)
# define soc_is_omap543x() is_omap543x()
#endif
+#if defined(CONFIG_SOC_DRA7XX)
+#undef soc_is_dra7xx
+#define soc_is_dra7xx() (of_machine_is_compatible("ti,dra7"))
+#endif
+
/* Various silicon revisions for omap2 */
#define OMAP242X_CLASS 0x24200024
#define OMAP2420_REV_ES1_0 OMAP242X_CLASS