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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-22 00:27:22 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-22 00:27:22 +0100
commitbab588fcfb6335c767d811a8955979f5440328e0 (patch)
tree2a862ddf47a82be885a8e7945a17cc3ff7a658b9 /arch/arm/mach-prima2/rstc.c
parentMerge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/ar... (diff)
parentARM: prima2: remove duplicate v7_invalidate_l1 (diff)
downloadlinux-bab588fcfb6335c767d811a8955979f5440328e0.tar.xz
linux-bab588fcfb6335c767d811a8955979f5440328e0.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: "This is a larger set of new functionality for the existing SoC families, including: - vt8500 gains support for new CPU cores, notably the Cortex-A9 based wm8850 - prima2 gains support for the "marco" SoC family, its SMP based cousin - tegra gains support for the new Tegra4 (Tegra114) family - socfpga now supports a newer version of the hardware including SMP - i.mx31 and bcm2835 are now using DT probing for their clocks - lots of updates for sh-mobile - OMAP updates for clocks, power management and USB - i.mx6q and tegra now support cpuidle - kirkwood now supports PCIe hot plugging - tegra clock support is updated - tegra USB PHY probing gets implemented diffently" * tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (148 commits) ARM: prima2: remove duplicate v7_invalidate_l1 ARM: shmobile: r8a7779: Correct TMU clock support again ARM: prima2: fix __init section for cpu hotplug ARM: OMAP: Consolidate OMAP USB-HS platform data (part 3/3) ARM: OMAP: Consolidate OMAP USB-HS platform data (part 1/3) arm: socfpga: Add SMP support for actual socfpga harware arm: Add v7_invalidate_l1 to cache-v7.S arm: socfpga: Add entries to enable make dtbs socfpga arm: socfpga: Add new device tree source for actual socfpga HW ARM: tegra: sort Kconfig selects for Tegra114 ARM: tegra: enable ARCH_REQUIRE_GPIOLIB for Tegra114 ARM: tegra: Fix build error w/ ARCH_TEGRA_114_SOC w/o ARCH_TEGRA_3x_SOC ARM: tegra: Fix build error for gic update ARM: tegra: remove empty tegra_smp_init_cpus() ARM: shmobile: Register ARM architected timer ARM: MARCO: fix the build issue due to gic-vic-to-irqchip move ARM: shmobile: r8a7779: Correct TMU clock support ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles ARM: mxs: use apbx bus clock to drive the timers on timrotv2 ...
Diffstat (limited to 'arch/arm/mach-prima2/rstc.c')
-rw-r--r--arch/arm/mach-prima2/rstc.c45
1 files changed, 28 insertions, 17 deletions
diff --git a/arch/arm/mach-prima2/rstc.c b/arch/arm/mach-prima2/rstc.c
index 762adb73ab7c..435019ca0a48 100644
--- a/arch/arm/mach-prima2/rstc.c
+++ b/arch/arm/mach-prima2/rstc.c
@@ -19,6 +19,7 @@ static DEFINE_MUTEX(rstc_lock);
static struct of_device_id rstc_ids[] = {
{ .compatible = "sirf,prima2-rstc" },
+ { .compatible = "sirf,marco-rstc" },
{},
};
@@ -42,27 +43,37 @@ early_initcall(sirfsoc_of_rstc_init);
int sirfsoc_reset_device(struct device *dev)
{
- const unsigned int *prop = of_get_property(dev->of_node, "reset-bit", NULL);
- unsigned int reset_bit;
+ u32 reset_bit;
- if (!prop)
- return -ENODEV;
-
- reset_bit = be32_to_cpup(prop);
+ if (of_property_read_u32(dev->of_node, "reset-bit", &reset_bit))
+ return -EINVAL;
mutex_lock(&rstc_lock);
- /*
- * Writing 1 to this bit resets corresponding block. Writing 0 to this
- * bit de-asserts reset signal of the corresponding block.
- * datasheet doesn't require explicit delay between the set and clear
- * of reset bit. it could be shorter if tests pass.
- */
- writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) | reset_bit,
- sirfsoc_rstc_base + (reset_bit / 32) * 4);
- msleep(10);
- writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) & ~reset_bit,
- sirfsoc_rstc_base + (reset_bit / 32) * 4);
+ if (of_device_is_compatible(dev->of_node, "sirf,prima2-rstc")) {
+ /*
+ * Writing 1 to this bit resets corresponding block. Writing 0 to this
+ * bit de-asserts reset signal of the corresponding block.
+ * datasheet doesn't require explicit delay between the set and clear
+ * of reset bit. it could be shorter if tests pass.
+ */
+ writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) | reset_bit,
+ sirfsoc_rstc_base + (reset_bit / 32) * 4);
+ msleep(10);
+ writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) & ~reset_bit,
+ sirfsoc_rstc_base + (reset_bit / 32) * 4);
+ } else {
+ /*
+ * For MARCO and POLO
+ * Writing 1 to SET register resets corresponding block. Writing 1 to CLEAR
+ * register de-asserts reset signal of the corresponding block.
+ * datasheet doesn't require explicit delay between the set and clear
+ * of reset bit. it could be shorter if tests pass.
+ */
+ writel(reset_bit, sirfsoc_rstc_base + (reset_bit / 32) * 8);
+ msleep(10);
+ writel(reset_bit, sirfsoc_rstc_base + (reset_bit / 32) * 8 + 4);
+ }
mutex_unlock(&rstc_lock);