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authorArnd Bergmann <arnd@arndb.de>2012-03-02 15:04:47 +0000
committerArnd Bergmann <arnd@arndb.de>2012-03-02 15:04:47 +0000
commitcb66bb1d6fab2d91960c20f256c6986d5afac1a1 (patch)
tree08bec33c473e85de9478b68cb1f3fbc1e6ebef07 /arch/arm/plat-mxc
parentb23f46c7471d0adcf81092b6702299562c4149c5 (diff)
parentbb07d7511e0884f913a0610d5f9a2f8a27914042 (diff)
Merge branch 'features/imx3' of git://git.pengutronix.de/git/imx/linux-2.6 into next/soc
* 'features/imx3' of git://git.pengutronix.de/git/imx/linux-2.6: ARM: mx3: Setup AIPS registers ARM: mx3: Let mx31 and mx35 enter in LPM mode in WFI Conflicts: arch/arm/mach-imx/mm-imx3.c
Diffstat (limited to 'arch/arm/plat-mxc')
-rw-r--r--arch/arm/plat-mxc/cpu.c24
-rw-r--r--arch/arm/plat-mxc/include/mach/common.h9
2 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/cpu.c b/arch/arm/plat-mxc/cpu.c
index f5b7e0fa237..220dd6f9312 100644
--- a/arch/arm/plat-mxc/cpu.c
+++ b/arch/arm/plat-mxc/cpu.c
@@ -1,5 +1,6 @@
#include <linux/module.h>
+#include <linux/io.h>
#include <mach/hardware.h>
unsigned int __mxc_cpu_type;
@@ -18,3 +19,26 @@ void imx_print_silicon_rev(const char *cpu, int srev)
pr_info("CPU identified as %s, silicon rev %d.%d\n",
cpu, (srev >> 4) & 0xf, srev & 0xf);
}
+
+void __init imx_set_aips(void __iomem *base)
+{
+ unsigned int reg;
+/*
+ * Set all MPROTx to be non-bufferable, trusted for R/W,
+ * not forced to user-mode.
+ */
+ __raw_writel(0x77777777, base + 0x0);
+ __raw_writel(0x77777777, base + 0x4);
+
+/*
+ * Set all OPACRx to be non-bufferable, to not require
+ * supervisor privilege level for access, allow for
+ * write access and untrusted master access.
+ */
+ __raw_writel(0x0, base + 0x40);
+ __raw_writel(0x0, base + 0x44);
+ __raw_writel(0x0, base + 0x48);
+ __raw_writel(0x0, base + 0x4C);
+ reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
+ __raw_writel(reg, base + 0x50);
+}
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 1bf0df81bdc..7c24e5ab7d5 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -75,6 +75,7 @@ extern void mxc_restart(char, const char *);
extern void mxc_arch_reset_init(void __iomem *);
extern int mx53_revision(void);
extern int mx53_display_revision(void);
+extern void imx_set_aips(void __iomem *);
enum mxc_cpu_pwr_mode {
WAIT_CLOCKED, /* wfi only */
@@ -84,6 +85,14 @@ enum mxc_cpu_pwr_mode {
STOP_POWER_OFF, /* STOP + SRPG */
};
+enum mx3_cpu_pwr_mode {
+ MX3_RUN,
+ MX3_WAIT,
+ MX3_DOZE,
+ MX3_SLEEP,
+};
+
+extern void mx3_cpu_lp_set(enum mx3_cpu_pwr_mode mode);
extern void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode);
extern void imx_print_silicon_rev(const char *cpu, int srev);