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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 18:24:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 18:24:44 -0700
commit11801e9de26992d37cb869cc74f389b6a7677e0e (patch)
tree322b7ea2b475d52da27d3e01f5bc2992bb708d59 /arch/arm/mach-tegra/platsmp.c
parent1a58ddfc0fcf3d83a92573c71771962f9b218993 (diff)
parentb6e3b5c2fea9c76617e101cbbc54ed14961f9dee (diff)
Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc-specific updates from Olof Johansson: "Most notable here is probably the addition of basic support for the BCM2835, an SoC used in some of the Roku 2 players as well as the much-hyped Raspberry Pi, cleaned up and contributed by Stephen Warren. It's still early days on mainline support, with just the basics working. But it has to start somewhere! Beyond that there's some conversions of clock infrastructure on tegra to common clock, misc updates for several other platforms, and OMAP now has its own bus (under drivers/bus) to manage its devices through. This branch adds two new directories outside of arch/arm: drivers/irqchip for new irq controllers, and drivers/bus for the above OMAP bus. It's expected that some of the other platforms will migrate parts of their platforms to those directories over time as well." Fix up trivial conflicts with the clk infrastructure changes. * tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (62 commits) ARM: shmobile: add new __iomem annotation for new code ARM: LPC32xx: Support GPI 28 ARM: LPC32xx: Platform update for devicetree completion of spi-pl022 ARM: LPC32xx: Board cleanup irqchip: fill in empty Kconfig ARM: SAMSUNG: Add check for NULL in clock interface ARM: EXYNOS: Put PCM, Slimbus, Spdif clocks to off state ARM: EXYNOS: Add bus clock for FIMD ARM: SAMSUNG: Fix HDMI related warnings ARM: S3C24XX: Add .get_rate callback for "camif-upll" clock ARM: EXYNOS: Fix incorrect help text ARM: EXYNOS: Turn off clocks for NAND, OneNAND and TSI controllers ARM: OMAP: AM33xx hwmod: fixup SPI after platform_data move MAINTAINERS: add an entry for the BCM2835 ARM sub-architecture ARM: bcm2835: instantiate console UART ARM: bcm2835: add stub clock driver ARM: bcm2835: add system timer ARM: bcm2835: add interrupt controller driver ARM: add infra-structure for BCM2835 and Raspberry Pi ARM: tegra20: add CPU hotplug support ...
Diffstat (limited to 'arch/arm/mach-tegra/platsmp.c')
-rw-r--r--arch/arm/mach-tegra/platsmp.c29
1 files changed, 5 insertions, 24 deletions
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index 1a208dbf682f..96ed1718eef0 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -31,6 +31,7 @@
#include "fuse.h"
#include "flowctrl.h"
#include "reset.h"
+#include "tegra_cpu_car.h"
extern void tegra_secondary_startup(void);
@@ -38,17 +39,6 @@ static void __iomem *scu_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE);
#define EVP_CPU_RESET_VECTOR \
(IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE) + 0x100)
-#define CLK_RST_CONTROLLER_CLK_CPU_CMPLX \
- (IO_ADDRESS(TEGRA_CLK_RESET_BASE) + 0x4c)
-#define CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET \
- (IO_ADDRESS(TEGRA_CLK_RESET_BASE) + 0x340)
-#define CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR \
- (IO_ADDRESS(TEGRA_CLK_RESET_BASE) + 0x344)
-#define CLK_RST_CONTROLLER_CLK_CPU_CMPLX_CLR \
- (IO_ADDRESS(TEGRA_CLK_RESET_BASE) + 0x34c)
-
-#define CPU_CLOCK(cpu) (0x1<<(8+cpu))
-#define CPU_RESET(cpu) (0x1111ul<<(cpu))
void __cpuinit platform_secondary_init(unsigned int cpu)
{
@@ -63,13 +53,8 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
static int tegra20_power_up_cpu(unsigned int cpu)
{
- u32 reg;
-
/* Enable the CPU clock. */
- reg = readl(CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
- writel(reg & ~CPU_CLOCK(cpu), CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
- barrier();
- reg = readl(CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
+ tegra_enable_cpu_clock(cpu);
/* Clear flow controller CSR. */
flowctrl_write_cpu_csr(cpu, 0);
@@ -79,7 +64,6 @@ static int tegra20_power_up_cpu(unsigned int cpu)
static int tegra30_power_up_cpu(unsigned int cpu)
{
- u32 reg;
int ret, pwrgateid;
unsigned long timeout;
@@ -103,8 +87,7 @@ static int tegra30_power_up_cpu(unsigned int cpu)
}
/* CPU partition is powered. Enable the CPU clock. */
- writel(CPU_CLOCK(cpu), CLK_RST_CONTROLLER_CLK_CPU_CMPLX_CLR);
- reg = readl(CLK_RST_CONTROLLER_CLK_CPU_CMPLX_CLR);
+ tegra_enable_cpu_clock(cpu);
udelay(10);
/* Remove I/O clamps. */
@@ -128,8 +111,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
* via the flow controller). This will have no effect on first boot
* of the CPU since it should already be in reset.
*/
- writel(CPU_RESET(cpu), CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
- dmb();
+ tegra_put_cpu_in_reset(cpu);
/*
* Unhalt the CPU. If the flow controller was used to power-gate the
@@ -155,8 +137,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
goto done;
/* Take the CPU out of reset. */
- writel(CPU_RESET(cpu), CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR);
- wmb();
+ tegra_cpu_out_of_reset(cpu);
done:
return status;
}