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
  ...

1 files changed, 25 insertions, 5 deletions

diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c
index ff9e6b6c0460..1976e934cdd9 100644
--- a/arch/arm/mach-tegra/tegra2_clocks.c
+++ b/arch/arm/mach-tegra/tegra2_clocks.c
@@ -1143,15 +1143,35 @@ static void tegra2_emc_clk_init(struct clk *c)
 
 static long tegra2_emc_clk_round_rate(struct clk *c, unsigned long rate)
 {
-	long new_rate = rate;
+	long emc_rate;
+	long clk_rate;
 
-	new_rate = tegra_emc_round_rate(new_rate);
-	if (new_rate < 0)
+	/*
+	 * The slowest entry in the EMC clock table that is at least as
+	 * fast as rate.
+	 */
+	emc_rate = tegra_emc_round_rate(rate);
+	if (emc_rate < 0)
 		return c->max_rate;
 
-	BUG_ON(new_rate != tegra2_periph_clk_round_rate(c, new_rate));
+	/*
+	 * The fastest rate the PLL will generate that is at most the
+	 * requested rate.
+	 */
+	clk_rate = tegra2_periph_clk_round_rate(c, emc_rate);
+
+	/*
+	 * If this fails, and emc_rate > clk_rate, it's because the maximum
+	 * rate in the EMC tables is larger than the maximum rate of the EMC
+	 * clock. The EMC clock's max rate is the rate it was running when the
+	 * kernel booted. Such a mismatch is probably due to using the wrong
+	 * BCT, i.e. using a Tegra20 BCT with an EMC table written for Tegra25.
+	 */
+	WARN_ONCE(emc_rate != clk_rate,
+		"emc_rate %ld != clk_rate %ld",
+		emc_rate, clk_rate);
 
-	return new_rate;
+	return emc_rate;
 }
 
 static int tegra2_emc_clk_set_rate(struct clk *c, unsigned long rate)