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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 01:14:44 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 01:14:44 +0200
commit281b05392fc2cb26209b4d85abaf4889ab1991f3 (patch)
treebbf5000ce7bd739b1ca85e9918741e285d267c7c /arch/arm/mach-imx
parentMerge tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (diff)
parentMerge branch 'samsung/cleanup-exynos-clock' into next/soc (diff)
downloadlinux-281b05392fc2cb26209b4d85abaf4889ab1991f3.tar.xz
linux-281b05392fc2cb26209b4d85abaf4889ab1991f3.zip
Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: SoC specific updates" from Arnd Bergmann: "These changes are all specific to an soc family or the code for one soc. Lots of work for Tegra3 this time, but also a lot of other platforms. There will be another (smaller) set of soc patches later in the merge window for stuff that has dependencies on external trees or that was sent just before the merge window opened. The asoc tree added a few devices to the i.mx platform, which conflict with other devices added in the same place here. The tegra Makefile conflicts between a number of branches, mostly because of changes regarding localtimer.c, which was removed in the end. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" Fix up some trivial conflicts, including the mentioned Tegra Makefile. * tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits) ARM: EXYNOS: fix cycle count for periodic mode of clock event timers ARM: EXYNOS: add support JPEG ARM: EXYNOS: Add DMC1, allow PPMU access for DMC ARM: SAMSUNG: Correct MIPI-CSIS io memory resource definition ARM: SAMSUNG: fix __init attribute on regarding s3c_set_platdata() ARM: SAMSUNG: Add __init attribute to samsung_bl_set() ARM: S5PV210: Add usb otg phy control ARM: S3C64XX: Add usb otg phy control ARM: EXYNOS: Enable l2 configuration through device tree ARM: EXYNOS: remove useless code to save/restore L2 ARM: EXYNOS: save L2 settings during bootup ARM: S5P: add L2 early resume code ARM: EXYNOS: Add support AFTR mode on EXYNOS4210 ARM: mx35: Setup the AIPS registers ARM: mx5: Use common function for configuring AIPS ARM: mx3: Setup AIPS registers ARM: mx3: Let mx31 and mx35 enter in LPM mode in WFI ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE ARM: imx: update imx_v6_v7_defconfig ARM: tegra: Demote EMC clock inconsistency BUG to WARN ...
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r--arch/arm/mach-imx/Makefile4
-rw-r--r--arch/arm/mach-imx/cpu-imx5.c36
-rw-r--r--arch/arm/mach-imx/crmregs-imx3.h1
-rw-r--r--arch/arm/mach-imx/mm-imx3.c11
-rw-r--r--arch/arm/mach-imx/mm-imx5.c10
-rw-r--r--arch/arm/mach-imx/pm-imx3.c37
6 files changed, 61 insertions, 38 deletions
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 190d57006163..1ca9558723c2 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -8,8 +8,8 @@ obj-$(CONFIG_SOC_IMX25) += clock-imx25.o mm-imx25.o ehci-imx25.o cpu-imx25.o
obj-$(CONFIG_SOC_IMX27) += cpu-imx27.o pm-imx27.o
obj-$(CONFIG_SOC_IMX27) += clock-imx27.o mm-imx27.o ehci-imx27.o
-obj-$(CONFIG_SOC_IMX31) += mm-imx3.o cpu-imx31.o clock-imx31.o iomux-imx31.o ehci-imx31.o
-obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o clock-imx35.o ehci-imx35.o
+obj-$(CONFIG_SOC_IMX31) += mm-imx3.o cpu-imx31.o clock-imx31.o iomux-imx31.o ehci-imx31.o pm-imx3.o
+obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o clock-imx35.o ehci-imx35.o pm-imx3.o
obj-$(CONFIG_SOC_IMX5) += cpu-imx5.o mm-imx5.o clock-mx51-mx53.o ehci-imx5.o pm-imx5.o cpu_op-mx51.o
diff --git a/arch/arm/mach-imx/cpu-imx5.c b/arch/arm/mach-imx/cpu-imx5.c
index 5e2e7a843860..aa15c517d06e 100644
--- a/arch/arm/mach-imx/cpu-imx5.c
+++ b/arch/arm/mach-imx/cpu-imx5.c
@@ -149,39 +149,3 @@ int mx50_revision(void)
return mx5_cpu_rev;
}
EXPORT_SYMBOL(mx50_revision);
-
-static int __init post_cpu_init(void)
-{
- unsigned int reg;
- void __iomem *base;
-
- if (cpu_is_mx51() || cpu_is_mx53()) {
- if (cpu_is_mx51())
- base = MX51_IO_ADDRESS(MX51_AIPS1_BASE_ADDR);
- else
- base = MX53_IO_ADDRESS(MX53_AIPS1_BASE_ADDR);
-
- __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);
-
- if (cpu_is_mx51())
- base = MX51_IO_ADDRESS(MX51_AIPS2_BASE_ADDR);
- else
- base = MX53_IO_ADDRESS(MX53_AIPS2_BASE_ADDR);
-
- __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);
- }
-
- return 0;
-}
-
-postcore_initcall(post_cpu_init);
diff --git a/arch/arm/mach-imx/crmregs-imx3.h b/arch/arm/mach-imx/crmregs-imx3.h
index d7691e2362c1..53141273df45 100644
--- a/arch/arm/mach-imx/crmregs-imx3.h
+++ b/arch/arm/mach-imx/crmregs-imx3.h
@@ -77,6 +77,7 @@ MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR) : MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR))
#define MXC_CCM_CCMR_SSI2S_MASK (0x3 << 21)
#define MXC_CCM_CCMR_LPM_OFFSET 14
#define MXC_CCM_CCMR_LPM_MASK (0x3 << 14)
+#define MXC_CCM_CCMR_LPM_WAIT_MX35 (0x1 << 14)
#define MXC_CCM_CCMR_FIRS_OFFSET 11
#define MXC_CCM_CCMR_FIRS_MASK (0x3 << 11)
#define MXC_CCM_CCMR_UPE (1 << 9)
diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c
index 07699196b461..f8ca96c354f2 100644
--- a/arch/arm/mach-imx/mm-imx3.c
+++ b/arch/arm/mach-imx/mm-imx3.c
@@ -34,6 +34,8 @@ static void imx3_idle(void)
{
unsigned long reg = 0;
+ mx3_cpu_lp_set(MX3_WAIT);
+
__asm__ __volatile__(
/* disable I and D cache */
"mrc p15, 0, %0, c1, c0, 0\n"
@@ -177,6 +179,10 @@ void __init imx31_soc_init(void)
}
imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
+
+ imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR));
+ imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR));
+
platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res,
ARRAY_SIZE(imx31_audmux_res));
}
@@ -267,6 +273,11 @@ void __init imx35_soc_init(void)
}
imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
+
+ /* Setup AIPS registers */
+ imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR));
+ imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR));
+
/* i.mx35 has the i.mx31 type audmux */
platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res,
ARRAY_SIZE(imx35_audmux_res));
diff --git a/arch/arm/mach-imx/mm-imx5.c b/arch/arm/mach-imx/mm-imx5.c
index dc7c4ed81531..51af9fa56944 100644
--- a/arch/arm/mach-imx/mm-imx5.c
+++ b/arch/arm/mach-imx/mm-imx5.c
@@ -201,6 +201,11 @@ void __init imx51_soc_init(void)
/* i.mx51 has the i.mx35 type sdma */
imx_add_imx_sdma("imx35-sdma", MX51_SDMA_BASE_ADDR, MX51_INT_SDMA, &imx51_sdma_pdata);
+
+ /* Setup AIPS registers */
+ imx_set_aips(MX51_IO_ADDRESS(MX51_AIPS1_BASE_ADDR));
+ imx_set_aips(MX51_IO_ADDRESS(MX51_AIPS2_BASE_ADDR));
+
/* i.mx51 has the i.mx31 type audmux */
platform_device_register_simple("imx31-audmux", 0, imx51_audmux_res,
ARRAY_SIZE(imx51_audmux_res));
@@ -219,6 +224,11 @@ void __init imx53_soc_init(void)
/* i.mx53 has the i.mx35 type sdma */
imx_add_imx_sdma("imx35-sdma", MX53_SDMA_BASE_ADDR, MX53_INT_SDMA, &imx53_sdma_pdata);
+
+ /* Setup AIPS registers */
+ imx_set_aips(MX53_IO_ADDRESS(MX53_AIPS1_BASE_ADDR));
+ imx_set_aips(MX53_IO_ADDRESS(MX53_AIPS2_BASE_ADDR));
+
/* i.mx53 has the i.mx31 type audmux */
platform_device_register_simple("imx31-audmux", 0, imx53_audmux_res,
ARRAY_SIZE(imx53_audmux_res));
diff --git a/arch/arm/mach-imx/pm-imx3.c b/arch/arm/mach-imx/pm-imx3.c
new file mode 100644
index 000000000000..b3752439632e
--- /dev/null
+++ b/arch/arm/mach-imx/pm-imx3.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+#include <linux/io.h>
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/devices-common.h>
+#include "crmregs-imx3.h"
+
+/*
+ * Set cpu low power mode before WFI instruction. This function is called
+ * mx3 because it can be used for mx31 and mx35.
+ * Currently only WAIT_MODE is supported.
+ */
+void mx3_cpu_lp_set(enum mx3_cpu_pwr_mode mode)
+{
+ int reg = __raw_readl(MXC_CCM_CCMR);
+ reg &= ~MXC_CCM_CCMR_LPM_MASK;
+
+ switch (mode) {
+ case MX3_WAIT:
+ if (cpu_is_mx35())
+ reg |= MXC_CCM_CCMR_LPM_WAIT_MX35;
+ __raw_writel(reg, MXC_CCM_CCMR);
+ break;
+ default:
+ pr_err("Unknown cpu power mode: %d\n", mode);
+ return;
+ }
+}