Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux

Pull clock framework changes from Mike Turquette:
 "The common clock framework changes for 3.8 are comprised of lots of
  fixes for existing platforms as well as new ports for some ARM
  platforms.  In addition there are new clk drivers for audio devices
  and MFDs."

Fix up trivial conflict in <linux/clk-provider.h> (removal of 'inline'
clashing with return type fixes)

* tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux: (51 commits)
  MAINTAINERS: bad email address for Mike Turquette
  clk: introduce optional disable_unused callback
  clk: ux500: fix bit error
  clk: clock multiplexers may register out of order
  clk: ux500: Initial support for abx500 clock driver
  CLK: SPEAr: Remove unused dummy apb_pclk
  CLK: SPEAr: Correct index scanning done for clock synths
  CLK: SPEAr: Update clock rate table
  CLK: SPEAr: Add missing clocks
  CLK: SPEAr: Set CLK_SET_RATE_PARENT for few clocks
  CLK: SPEAr13xx: fix parent names of multiple clocks
  CLK: SPEAr13xx: Fix mux clock names
  CLK: SPEAr: Fix dev_id & con_id for multiple clocks
  clk: move IM-PD1 clocks to drivers/clk
  clk: make ICST driver handle the VCO registers
  clk: add GPLv2 headers to the Versatile clock files
  clk: mxs: Use a better name for the USB PHY clock
  clk: spear: Add stub functions for spear3[0|1|2]0_clk_init()
  CLK: clk-twl6040: fix return value check in twl6040_clk_probe()
  clk: ux500: Register nomadik keypad clock lookups for u8500
  ...

33 files changed, 1451 insertions, 489 deletions

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index bace9e98f75..823f62d900b 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -42,10 +42,12 @@ config COMMON_CLK_WM831X
 
 config COMMON_CLK_VERSATILE
 	bool "Clock driver for ARM Reference designs"
-	depends on ARCH_INTEGRATOR || ARCH_REALVIEW
+	depends on ARCH_INTEGRATOR || ARCH_REALVIEW || ARCH_VEXPRESS
 	---help---
-          Supports clocking on ARM Reference designs Integrator/AP,
-	  Integrator/CP, RealView PB1176, EB, PB11MP and PBX.
+          Supports clocking on ARM Reference designs:
+	  - Integrator/AP and Integrator/CP
+	  - RealView PB1176, EB, PB11MP and PBX
+	  - Versatile Express
 
 config COMMON_CLK_MAX77686
 	tristate "Clock driver for Maxim 77686 MFD"
@@ -53,4 +55,12 @@ config COMMON_CLK_MAX77686
 	---help---
 	  This driver supports Maxim 77686 crystal oscillator clock. 
 
+config CLK_TWL6040
+	tristate "External McPDM functional clock from twl6040"
+	depends on TWL6040_CORE
+	---help---
+	  Enable the external functional clock support on OMAP4+ platforms for
+	  McPDM. McPDM module is using the external bit clock on the McPDM bus
+	  as functional clock.
+
 endmenu
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 71a25b91de0..2701235d575 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -23,3 +23,4 @@ obj-$(CONFIG_ARCH_VT8500)	+= clk-vt8500.o
 # Chip specific
 obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
 obj-$(CONFIG_COMMON_CLK_MAX77686) += clk-max77686.o
+obj-$(CONFIG_CLK_TWL6040)	+= clk-twl6040.o
diff --git a/drivers/clk/clk-bcm2835.c b/drivers/clk/clk-bcm2835.c
index 67ad16b20b8..b61ee2c5af8 100644
--- a/drivers/clk/clk-bcm2835.c
+++ b/drivers/clk/clk-bcm2835.c
@@ -33,17 +33,17 @@ void __init bcm2835_init_clocks(void)
 
 	clk = clk_register_fixed_rate(NULL, "sys_pclk", NULL, CLK_IS_ROOT,
 					250000000);
-	if (!clk)
+	if (IS_ERR(clk))
 		pr_err("sys_pclk not registered\n");
 
 	clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
 					126000000);
-	if (!clk)
+	if (IS_ERR(clk))
 		pr_err("apb_pclk not registered\n");
 
 	clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
 					3000000);
-	if (!clk)
+	if (IS_ERR(clk))
 		pr_err("uart0_pclk not registered\n");
 	ret = clk_register_clkdev(clk, NULL, "20201000.uart");
 	if (ret)
@@ -51,7 +51,7 @@ void __init bcm2835_init_clocks(void)
 
 	clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
 					125000000);
-	if (!clk)
+	if (IS_ERR(clk))
 		pr_err("uart1_pclk not registered\n");
 	ret = clk_register_clkdev(clk, NULL, "20215000.uart");
 	if (ret)
diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c
index f5ec0eebd4d..af78ed6b67e 100644
--- a/drivers/clk/clk-fixed-rate.c
+++ b/drivers/clk/clk-fixed-rate.c
@@ -97,7 +97,7 @@ void __init of_fixed_clk_setup(struct device_node *node)
 	of_property_read_string(node, "clock-output-names", &clk_name);
 
 	clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT, rate);
-	if (clk)
+	if (!IS_ERR(clk))
 		of_clk_add_provider(node, of_clk_src_simple_get, clk);
 }
 EXPORT_SYMBOL_GPL(of_fixed_clk_setup);
diff --git a/drivers/clk/clk-prima2.c b/drivers/clk/clk-prima2.c
index 517874fa685..a203ecccdc4 100644
--- a/drivers/clk/clk-prima2.c
+++ b/drivers/clk/clk-prima2.c
@@ -1054,118 +1054,118 @@ void __init sirfsoc_of_clk_init(void)
 	/* These are always available (RTC and 26MHz OSC)*/
 	clk = clk_register_fixed_rate(NULL, "rtc", NULL,
 		CLK_IS_ROOT, 32768);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register_fixed_rate(NULL, "osc", NULL,
 		CLK_IS_ROOT, 26000000);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 
 	clk = clk_register(NULL, &clk_pll1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_pll2.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_pll3.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_mem.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_sys.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_security.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b8030000.security");
 	clk = clk_register(NULL, &clk_dsp.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_gps.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "a8010000.gps");
 	clk = clk_register(NULL, &clk_mf.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_io.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "io");
 	clk = clk_register(NULL, &clk_cpu.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "cpu");
 	clk = clk_register(NULL, &clk_uart0.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0050000.uart");
 	clk = clk_register(NULL, &clk_uart1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0060000.uart");
 	clk = clk_register(NULL, &clk_uart2.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0070000.uart");
 	clk = clk_register(NULL, &clk_tsc.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0110000.tsc");
 	clk = clk_register(NULL, &clk_i2c0.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00e0000.i2c");
 	clk = clk_register(NULL, &clk_i2c1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00f0000.i2c");
 	clk = clk_register(NULL, &clk_spi0.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00d0000.spi");
 	clk = clk_register(NULL, &clk_spi1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0170000.spi");
 	clk = clk_register(NULL, &clk_pwmc.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0130000.pwm");
 	clk = clk_register(NULL, &clk_efuse.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0140000.efusesys");
 	clk = clk_register(NULL, &clk_pulse.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0150000.pulsec");
 	clk = clk_register(NULL, &clk_dmac0.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00b0000.dma-controller");
 	clk = clk_register(NULL, &clk_dmac1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0160000.dma-controller");
 	clk = clk_register(NULL, &clk_nand.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0030000.nand");
 	clk = clk_register(NULL, &clk_audio.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0040000.audio");
 	clk = clk_register(NULL, &clk_usp0.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0080000.usp");
 	clk = clk_register(NULL, &clk_usp1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b0090000.usp");
 	clk = clk_register(NULL, &clk_usp2.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00a0000.usp");
 	clk = clk_register(NULL, &clk_vip.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00c0000.vip");
 	clk = clk_register(NULL, &clk_gfx.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "98000000.graphics");
 	clk = clk_register(NULL, &clk_mm.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "a0000000.multimedia");
 	clk = clk_register(NULL, &clk_lcd.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "90010000.display");
 	clk = clk_register(NULL, &clk_vpp.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "90020000.vpp");
 	clk = clk_register(NULL, &clk_mmc01.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_mmc23.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_mmc45.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &usb_pll_clk_hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk = clk_register(NULL, &clk_usb0.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00e0000.usb");
 	clk = clk_register(NULL, &clk_usb1.hw);
-	BUG_ON(!clk);
+	BUG_ON(IS_ERR(clk));
 	clk_register_clkdev(clk, NULL, "b00f0000.usb");
 }
diff --git a/drivers/clk/clk-twl6040.c b/drivers/clk/clk-twl6040.c
new file mode 100644
index 00000000000..bc1e713e7b9
--- /dev/null
+++ b/drivers/clk/clk-twl6040.c
@@ -0,0 +1,126 @@
+/*
+* TWL6040 clock module driver for OMAP4 McPDM functional clock
+*
+* Copyright (C) 2012 Texas Instruments Inc.
+* Peter Ujfalusi <peter.ujfalusi@ti.com>
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* version 2 as published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+* 02110-1301 USA
+*
+*/
+
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/twl6040.h>
+#include <linux/clk-provider.h>
+
+struct twl6040_clk {
+	struct twl6040 *twl6040;
+	struct device *dev;
+	struct clk_hw mcpdm_fclk;
+	struct clk *clk;
+	int enabled;
+};
+
+static int twl6040_bitclk_is_enabled(struct clk_hw *hw)
+{
+	struct twl6040_clk *twl6040_clk = container_of(hw, struct twl6040_clk,
+						       mcpdm_fclk);
+	return twl6040_clk->enabled;
+}
+
+static int twl6040_bitclk_prepare(struct clk_hw *hw)
+{
+	struct twl6040_clk *twl6040_clk = container_of(hw, struct twl6040_clk,
+						       mcpdm_fclk);
+	int ret;
+
+	ret = twl6040_power(twl6040_clk->twl6040, 1);
+	if (!ret)
+		twl6040_clk->enabled = 1;
+
+	return ret;
+}
+
+static void twl6040_bitclk_unprepare(struct clk_hw *hw)
+{
+	struct twl6040_clk *twl6040_clk = container_of(hw, struct twl6040_clk,
+						       mcpdm_fclk);
+	int ret;
+
+	ret = twl6040_power(twl6040_clk->twl6040, 0);
+	if (!ret)
+		twl6040_clk->enabled = 0;
+}
+
+static const struct clk_ops twl6040_mcpdm_ops = {
+	.is_enabled = twl6040_bitclk_is_enabled,
+	.prepare = twl6040_bitclk_prepare,
+	.unprepare = twl6040_bitclk_unprepare,
+};
+
+static struct clk_init_data wm831x_clkout_init = {
+	.name = "mcpdm_fclk",
+	.ops = &twl6040_mcpdm_ops,
+	.flags = CLK_IS_ROOT,
+};
+
+static int __devinit twl6040_clk_probe(struct platform_device *pdev)
+{
+	struct twl6040 *twl6040 = dev_get_drvdata(pdev->dev.parent);
+	struct twl6040_clk *clkdata;
+
+	clkdata = devm_kzalloc(&pdev->dev, sizeof(*clkdata), GFP_KERNEL);
+	if (!clkdata)
+		return -ENOMEM;
+
+	clkdata->dev = &pdev->dev;
+	clkdata->twl6040 = twl6040;
+
+	clkdata->mcpdm_fclk.init = &wm831x_clkout_init;
+	clkdata->clk = clk_register(&pdev->dev, &clkdata->mcpdm_fclk);
+	if (IS_ERR(clkdata->clk))
+		return PTR_ERR(clkdata->clk);
+
+	dev_set_drvdata(&pdev->dev, clkdata);
+
+	return 0;
+}
+
+static int __devexit twl6040_clk_remove(struct platform_device *pdev)
+{
+	struct twl6040_clk *clkdata = dev_get_drvdata(&pdev->dev);
+
+	clk_unregister(clkdata->clk);
+
+	return 0;
+}
+
+static struct platform_driver twl6040_clk_driver = {
+	.driver = {
+		.name = "twl6040-clk",
+		.owner = THIS_MODULE,
+	},
+	.probe = twl6040_clk_probe,
+	.remove = __devexit_p(twl6040_clk_remove),
+};
+
+module_platform_driver(twl6040_clk_driver);
+
+MODULE_DESCRIPTION("TWL6040 clock driver for McPDM functional clock");
+MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
+MODULE_ALIAS("platform:twl6040-clk");
+MODULE_LICENSE("GPL");
diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c
index a885600f527..fe25570874d 100644
--- a/drivers/clk/clk-vt8500.c
+++ b/drivers/clk/clk-vt8500.c
@@ -120,8 +120,17 @@ static unsigned long vt8500_dclk_recalc_rate(struct clk_hw *hw,
 static long vt8500_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
 				unsigned long *prate)
 {
+	struct clk_device *cdev = to_clk_device(hw);
 	u32 divisor = *prate / rate;
 
+	/*
+	 * If this is a request for SDMMC we have to adjust the divisor
+	 * when >31 to use the fixed predivisor
+	 */
+	if ((cdev->div_mask == 0x3F) && (divisor > 31)) {
+		divisor = 64 * ((divisor / 64) + 1);
+	}
+
 	return *prate / divisor;
 }
 
@@ -135,6 +144,15 @@ static int vt8500_dclk_set_rate(struct clk_hw *hw, unsigned long rate,
 	if (divisor == cdev->div_mask + 1)
 		divisor = 0;
 
+	/* SDMMC mask may need to be corrected before testing if its valid */
+	if ((cdev->div_mask == 0x3F) && (divisor > 31)) {
+		/*
+		 * Bit 5 is a fixed /64 predivisor. If the requested divisor
+		 * is >31 then correct for the fixed divisor being required.
+		 */
+		divisor = 0x20 + (divisor / 64);
+	}
+
 	if (divisor > cdev->div_mask) {
 		pr_err("%s: invalid divisor for clock\n", __func__);
 		return -EINVAL;
diff --git a/drivers/clk/clk-wm831x.c b/drivers/clk/clk-wm831x.c
index e7b7765e85f..db4fbf20ffd 100644
--- a/drivers/clk/clk-wm831x.c
+++ b/drivers/clk/clk-wm831x.c
@@ -370,43 +370,27 @@ static __devinit int wm831x_clk_probe(struct platform_device *pdev)
 	clkdata->xtal_ena = ret & WM831X_XTAL_ENA;
 
 	clkdata->xtal_hw.init = &wm831x_xtal_init;
-	clkdata->xtal = clk_register(&pdev->dev, &clkdata->xtal_hw);
-	if (!clkdata->xtal)
-		return -EINVAL;
+	clkdata->xtal = devm_clk_register(&pdev->dev, &clkdata->xtal_hw);
+	if (IS_ERR(clkdata->xtal))
+		return PTR_ERR(clkdata->xtal);
 
 	clkdata->fll_hw.init = &wm831x_fll_init;
-	clkdata->fll = clk_register(&pdev->dev, &clkdata->fll_hw);
-	if (!clkdata->fll) {
-		ret = -EINVAL;
-		goto err_xtal;
-	}
+	clkdata->fll = devm_clk_register(&pdev->dev, &clkdata->fll_hw);
+	if (IS_ERR(clkdata->fll))
+		return PTR_ERR(clkdata->fll);
 
 	clkdata->clkout_hw.init = &wm831x_clkout_init;
-	clkdata->clkout = clk_register(&pdev->dev, &clkdata->clkout_hw);
-	if (!clkdata->clkout) {
-		ret = -EINVAL;
-		goto err_fll;
-	}
+	clkdata->clkout = devm_clk_register(&pdev->dev, &clkdata->clkout_hw);
+	if (IS_ERR(clkdata->clkout))
+		return PTR_ERR(clkdata->clkout);
 
 	dev_set_drvdata(&pdev->dev, clkdata);
 
 	return 0;
-
-err_fll:
-	clk_unregister(clkdata->fll);
-err_xtal:
-	clk_unregister(clkdata->xtal);
-	return ret;
 }
 
 static int __devexit wm831x_clk_remove(struct platform_device *pdev)
 {
-	struct wm831x_clk *clkdata = dev_get_drvdata(&pdev->dev);
-
-	clk_unregister(clkdata->clkout);
-	clk_unregister(clkdata->fll);
-	clk_unregister(clkdata->xtal);
-
 	return 0;
 }
 
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 56e4495ebeb..251e45d6024 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -17,6 +17,7 @@
 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/of.h>
+#include <linux/device.h>
 
 static DEFINE_SPINLOCK(enable_lock);
 static DEFINE_MUTEX(prepare_lock);
@@ -218,8 +219,17 @@ static void clk_disable_unused_subtree(struct clk *clk)
 	if (clk->flags & CLK_IGNORE_UNUSED)
 		goto unlock_out;
 
-	if (__clk_is_enabled(clk) && clk->ops->disable)
-		clk->ops->disable(clk->hw);
+	/*
+	 * some gate clocks have special needs during the disable-unused
+	 * sequence.  call .disable_unused if available, otherwise fall
+	 * back to .disable
+	 */
+	if (__clk_is_enabled(clk)) {
+		if (clk->ops->disable_unused)
+			clk->ops->disable_unused(clk->hw);
+		else if (clk->ops->disable)
+			clk->ops->disable(clk->hw);
+	}
 
 unlock_out:
 	spin_unlock_irqrestore(&enable_lock, flags);
@@ -261,7 +271,7 @@ inline struct clk_hw *__clk_get_hw(struct clk *clk)
 
 inline u8 __clk_get_num_parents(struct clk *clk)
 {
-	return !clk ? -EINVAL : clk->num_parents;
+	return !clk ? 0 : clk->num_parents;
 }
 
 inline struct clk *__clk_get_parent(struct clk *clk)
@@ -269,14 +279,14 @@ inline struct clk *__clk_get_parent(struct clk *clk)
 	return !clk ? NULL : clk->parent;
 }
 
-inline int __clk_get_enable_count(struct clk *clk)
+inline unsigned int __clk_get_enable_count(struct clk *clk)
 {
-	return !clk ? -EINVAL : clk->enable_count;
+	return !clk ? 0 : clk->enable_count;
 }
 
-inline int __clk_get_prepare_count(struct clk *clk)
+inline unsigned int __clk_get_prepare_count(struct clk *clk)
 {
-	return !clk ? -EINVAL : clk->prepare_count;
+	return !clk ? 0 : clk->prepare_count;
 }
 
 unsigned long __clk_get_rate(struct clk *clk)
@@ -302,15 +312,15 @@ out:
 
 inline unsigned long __clk_get_flags(struct clk *clk)
 {
-	return !clk ? -EINVAL : clk->flags;
+	return !clk ? 0 : clk->flags;
 }
 
-int __clk_is_enabled(struct clk *clk)
+bool __clk_is_enabled(struct clk *clk)
 {
 	int ret;
 
 	if (!clk)
-		return -EINVAL;
+		return false;
 
 	/*
 	 * .is_enabled is only mandatory for clocks that gate
@@ -323,7 +333,7 @@ int __clk_is_enabled(struct clk *clk)
 
 	ret = clk->ops->is_enabled(clk->hw);
 out:
-	return ret;
+	return !!ret;
 }
 
 static struct clk *__clk_lookup_subtree(const char *name, struct clk *clk)
@@ -568,7 +578,7 @@ unsigned long __clk_round_rate(struct clk *clk, unsigned long rate)
 	unsigned long parent_rate = 0;
 
 	if (!clk)
-		return -EINVAL;
+		return 0;
 
 	if (!clk->ops->round_rate) {
 		if (clk->flags & CLK_SET_RATE_PARENT)
@@ -1297,12 +1307,20 @@ int __clk_init(struct device *dev, struct clk *clk)
 	 * walk the list of orphan clocks and reparent any that are children of
 	 * this clock
 	 */
-	hlist_for_each_entry_safe(orphan, tmp, tmp2, &clk_orphan_list, child_node)
+	hlist_for_each_entry_safe(orphan, tmp, tmp2, &clk_orphan_list, child_node) {
+		if (orphan->ops->get_parent) {
+			i = orphan->ops->get_parent(orphan->hw);
+			if (!strcmp(clk->name, orphan->parent_names[i]))
+				__clk_reparent(orphan, clk);
+			continue;
+		}
+
 		for (i = 0; i < orphan->num_parents; i++)
 			if (!strcmp(clk->name, orphan->parent_names[i])) {
 				__clk_reparent(orphan, clk);
 				break;
 			}
+	 }
 
 	/*
 	 * optional platform-specific magic
@@ -1361,28 +1379,9 @@ struct clk *__clk_register(struct device *dev, struct clk_hw *hw)
 }
 EXPORT_SYMBOL_GPL(__clk_register);
 
-/**
- * clk_register - allocate a new clock, register it and return an opaque cookie
- * @dev: device that is registering this clock
- * @hw: link to hardware-specific clock data
- *
- * clk_register is the primary interface for populating the clock tree with new
- * clock nodes.  It returns a pointer to the newly allocated struct clk which
- * cannot be dereferenced by driver code but may be used in conjuction with the
- * rest of the clock API.  In the event of an error clk_register will return an
- * error code; drivers must test for an error code after calling clk_register.
- */
-struct clk *clk_register(struct device *dev, struct clk_hw *hw)
+static int _clk_register(struct device *dev, struct clk_hw *hw, struct clk *clk)
 {
 	int i, ret;
-	struct clk *clk;
-
-	clk = kzalloc(sizeof(*clk), GFP_KERNEL);
-	if (!clk) {
-		pr_err("%s: could not allocate clk\n", __func__);
-		ret = -ENOMEM;
-		goto fail_out;
-	}
 
 	clk->name = kstrdup(hw->init->name, GFP_KERNEL);
 	if (!clk->name) {
@@ -1420,7 +1419,7 @@ struct clk *clk_register(struct device *dev, struct clk_hw *hw)
 
 	ret = __clk_init(dev, clk);
 	if (!ret)
-		return clk;
+		return 0;
 
 fail_parent_names_copy:
 	while (--i >= 0)
@@ -1429,6 +1428,36 @@ fail_parent_names_copy:
 fail_parent_names:
 	kfree(clk->name);
 fail_name:
+	return ret;
+}
+
+/**
+ * clk_register - allocate a new clock, register it and return an opaque cookie
+ * @dev: device that is registering this clock
+ * @hw: link to hardware-specific clock data
+ *
+ * clk_register is the primary interface for populating the clock tree with new
+ * clock nodes.  It returns a pointer to the newly allocated struct clk which
+ * cannot be dereferenced by driver code but may be used in conjuction with the
+ * rest of the clock API.  In the event of an error clk_register will return an
+ * error code; drivers must test for an error code after calling clk_register.
+ */
+struct clk *clk_register(struct device *dev, struct clk_hw *hw)
+{
+	int ret;
+	struct clk *clk;
+
+	clk = kzalloc(sizeof(*clk), GFP_KERNEL);
+	if (!clk) {
+		pr_err("%s: could not allocate clk\n", __func__);
+		ret = -ENOMEM;
+		goto fail_out;
+	}
+
+	ret = _clk_register(dev, hw, clk);
+	if (!ret)
+		return clk;
+
 	kfree(clk);
 fail_out:
 	return ERR_PTR(ret);
@@ -1444,6 +1473,63 @@ EXPORT_SYMBOL_GPL(clk_register);
 void clk_unregister(struct clk *clk) {}
 EXPORT_SYMBOL_GPL(clk_unregister);
 
+static void devm_clk_release(struct device *dev, void *res)
+{
+	clk_unregister(res);
+}
+
+/**
+ * devm_clk_register - resource managed clk_register()
+ * @dev: device that is registering this clock
+ * @hw: link to hardware-specific clock data
+ *
+ * Managed clk_register(). Clocks returned from this function are
+ * automatically clk_unregister()ed on driver detach. See clk_register() for
+ * more information.
+ */
+struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw)
+{
+	struct clk *clk;
+	int ret;
+
+	clk = devres_alloc(devm_clk_release, sizeof(*clk), GFP_KERNEL);
+	if (!clk)
+		return ERR_PTR(-ENOMEM);
+
+	ret = _clk_register(dev, hw, clk);
+	if (!ret) {
+		devres_add(dev, clk);
+	} else {
+		devres_free(clk);
+		clk = ERR_PTR(ret);
+	}
+
+	return clk;
+}
+EXPORT_SYMBOL_GPL(devm_clk_register);
+
+static int devm_clk_match(struct device *dev, void *res, void *data)
+{
+	struct clk *c = res;
+	if (WARN_ON(!c))
+		return 0;
+	return c == data;
+}
+
+/**
+ * devm_clk_unregister - resource managed clk_unregister()
+ * @clk: clock to unregister
+ *
+ * Deallocate a clock allocated with devm_clk_register(). Normally
+ * this function will not need to be called and the resource management
+ * code will ensure that the resource is freed.
+ */
+void devm_clk_unregister(struct device *dev, struct clk *clk)
+{
+	WARN_ON(devres_release(dev, devm_clk_release, devm_clk_match, clk));
+}
+EXPORT_SYMBOL_GPL(devm_clk_unregister);
+
 /***        clk rate change notifiers        ***/
 
 /**
diff --git a/drivers/clk/mxs/clk-imx23.c b/drivers/clk/mxs/clk-imx23.c
index f00dffb9ad6..8dd476e2a9c 100644
--- a/drivers/clk/mxs/clk-imx23.c
+++ b/drivers/clk/mxs/clk-imx23.c
@@ -85,7 +85,7 @@ enum imx23_clk {
 	cpu_xtal, hbus, xbus, lcdif_div, ssp_div, gpmi_div, emi_pll,
 	emi_xtal, etm_div, saif_div, clk32k_div, rtc, adc, spdif_div,
 	clk32k, dri, pwm, filt, uart, ssp, gpmi, spdif, emi, saif,
-	lcdif, etm, usb, usb_pwr,
+	lcdif, etm, usb, usb_phy,
 	clk_max
 };
 
@@ -143,8 +143,8 @@ int __init mx23_clocks_init(void)
 	clks[saif] = mxs_clk_gate("saif", "saif_div", SAIF, 31);
 	clks[lcdif] = mxs_clk_gate("lcdif", "lcdif_div", PIX, 31);
 	clks[etm] = mxs_clk_gate("etm", "etm_div", ETM, 31);
-	clks[usb] = mxs_clk_gate("usb", "usb_pwr", DIGCTRL, 2);
-	clks[usb_pwr] = clk_register_gate(NULL, "usb_pwr", "pll", 0, PLLCTRL0, 18, 0, &mxs_lock);
+	clks[usb] = mxs_clk_gate("usb", "usb_phy", DIGCTRL, 2);
+	clks[usb_phy] = clk_register_gate(NULL, "usb_phy", "pll", 0, PLLCTRL0, 18, 0, &mxs_lock);
 
 	for (i = 0; i < ARRAY_SIZE(clks); i++)
 		if (IS_ERR(clks[i])) {
diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
index 42978f1b4bd..db3af087412 100644
--- a/drivers/clk/mxs/clk-imx28.c
+++ b/drivers/clk/mxs/clk-imx28.c
@@ -140,7 +140,7 @@ enum imx28_clk {
 	emi_xtal, lcdif_div, etm_div, ptp, saif0_div, saif1_div,
 	clk32k_div, rtc, lradc, spdif_div, clk32k, pwm, uart, ssp0,
 	ssp1, ssp2, ssp3, gpmi, spdif, emi, saif0, saif1, lcdif, etm,
-	fec, can0, can1, usb0, usb1, usb0_pwr, usb1_pwr, enet_out,
+	fec, can0, can1, usb0, usb1, usb0_phy, usb1_phy, enet_out,
 	clk_max
 };
 
@@ -218,10 +218,10 @@ int __init mx28_clocks_init(void)
 	clks[fec] = mxs_clk_gate("fec", "hbus", ENET, 30);
 	clks[can0] = mxs_clk_gate("can0", "ref_xtal", FLEXCAN, 30);
 	clks[can1] = mxs_clk_gate("can1", "ref_xtal", FLEXCAN, 28);