Merge branch 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/clk

From Stephen Warren <swarren@wwwdotorg.org>:

This branch contains numerous changes required as a baseline in order to
convert Tegra to the common clock framework. The intention was to also
include patches to actually convert Tegra to the common clock framework.
However, those patches appeared late in the kernel cycle and currently
cause regressions on some boards, so were dropped for now.

* 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: tegra: Provide clock for only one PWM controller
  ARM: tegra: Fix PWM clock programming
  ARM: tegra: dma: rename driver name for clock to "tegra-apbdma"
  ARM: tegra: Remove second instance of uart clk
  crypto: add clk_prepare/clk_unprepare
  ASoC: tegra: add clk_prepare/clk_unprepare
  staging: nvec: add clk_prepare/clk_unprepare
  spi/tegra: add clk_prepare/clk_unprepare
  Input: tegra-kbc - add clk_prepare/clk_unprepare
  USB: ehci-tegra: add clk_prepare/clk_unprepare
  mmc: tegra: add clk_prepare/clk_unprepare
  i2c: tegra: Add clk_prepare/clk_unprepare
  ARM: tegra: add clk_prepare/clk_unprepare

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

20 files changed, 119 insertions, 103 deletions

diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c
index 7a065f0cf63..ceb52db1e2f 100644
--- a/arch/arm/mach-tegra/cpu-tegra.c
+++ b/arch/arm/mach-tegra/cpu-tegra.c
@@ -189,8 +189,8 @@ static int tegra_cpu_init(struct cpufreq_policy *policy)
                 return PTR_ERR(emc_clk);
         }
 
-        clk_enable(emc_clk);
-        clk_enable(cpu_clk);
+        clk_prepare_enable(emc_clk);
+        clk_prepare_enable(cpu_clk);
 
         cpufreq_frequency_table_cpuinfo(policy, freq_table);
         cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
@@ -212,7 +212,7 @@ static int tegra_cpu_init(struct cpufreq_policy *policy)
 static int tegra_cpu_exit(struct cpufreq_policy *policy)
 {
         cpufreq_frequency_table_cpuinfo(policy, freq_table);
-        clk_disable(emc_clk);
+        clk_disable_unprepare(emc_clk);
         clk_put(emc_clk);
         clk_put(cpu_clk);
         return 0;
diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c
index abea4f6e2dd..29c5114d607 100644
--- a/arch/arm/mach-tegra/dma.c
+++ b/arch/arm/mach-tegra/dma.c
@@ -714,13 +714,13 @@ int __init tegra_dma_init(void)
 
         bitmap_fill(channel_usage, NV_DMA_MAX_CHANNELS);
 
-        c = clk_get_sys("tegra-dma", NULL);
+        c = clk_get_sys("tegra-apbdma", NULL);
         if (IS_ERR(c)) {
                 pr_err("Unable to get clock for APB DMA\n");
                 ret = PTR_ERR(c);
                 goto fail;
         }
-        ret = clk_enable(c);
+        ret = clk_prepare_enable(c);
         if (ret != 0) {
                 pr_err("Unable to enable clock for APB DMA\n");
                 goto fail;
diff --git a/arch/arm/mach-tegra/pcie.c b/arch/arm/mach-tegra/pcie.c
index 0e09137506e..d3ad5150d66 100644
--- a/arch/arm/mach-tegra/pcie.c
+++ b/arch/arm/mach-tegra/pcie.c
@@ -723,9 +723,9 @@ static int tegra_pcie_power_regate(void)
 
         tegra_pcie_xclk_clamp(false);
 
-        clk_enable(tegra_pcie.afi_clk);
-        clk_enable(tegra_pcie.pex_clk);
-        return clk_enable(tegra_pcie.pll_e);
+        clk_prepare_enable(tegra_pcie.afi_clk);
+        clk_prepare_enable(tegra_pcie.pex_clk);
+        return clk_prepare_enable(tegra_pcie.pll_e);
 }
 
 static int tegra_pcie_clocks_get(void)
diff --git a/arch/arm/mach-tegra/powergate.c b/arch/arm/mach-tegra/powergate.c
index f5b12fb4ff1..15d506501cc 100644
--- a/arch/arm/mach-tegra/powergate.c
+++ b/arch/arm/mach-tegra/powergate.c
@@ -146,7 +146,7 @@ int tegra_powergate_sequence_power_up(int id, struct clk *clk)
         if (ret)
                 goto err_power;
 
-        ret = clk_enable(clk);
+        ret = clk_prepare_enable(clk);
         if (ret)
                 goto err_clk;
 
@@ -162,7 +162,7 @@ int tegra_powergate_sequence_power_up(int id, struct clk *clk)
         return 0;
 
 err_clamp:
-        clk_disable(clk);
+        clk_disable_unprepare(clk);
 err_clk:
         tegra_powergate_power_off(id);
 err_power:
diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c
index b59315ce369..a703844b206 100644
--- a/arch/arm/mach-tegra/tegra2_clocks.c
+++ b/arch/arm/mach-tegra/tegra2_clocks.c
@@ -69,6 +69,8 @@
 
 #define PERIPH_CLK_SOURCE_MASK          (3<<30)
 #define PERIPH_CLK_SOURCE_SHIFT         30
+#define PERIPH_CLK_SOURCE_PWM_MASK      (7<<28)
+#define PERIPH_CLK_SOURCE_PWM_SHIFT     28
 #define PERIPH_CLK_SOURCE_ENABLE        (1<<28)
 #define PERIPH_CLK_SOURCE_DIVU71_MASK   0xFF
 #define PERIPH_CLK_SOURCE_DIVU16_MASK   0xFFFF
@@ -908,9 +910,20 @@ static void tegra2_periph_clk_init(struct clk *c)
         u32 val = clk_readl(c->reg);
         const struct clk_mux_sel *mux = NULL;
         const struct clk_mux_sel *sel;
+        u32 shift;
+        u32 mask;
+
+        if (c->flags & MUX_PWM) {
+                shift = PERIPH_CLK_SOURCE_PWM_SHIFT;
+                mask = PERIPH_CLK_SOURCE_PWM_MASK;
+        } else {
+                shift = PERIPH_CLK_SOURCE_SHIFT;
+                mask = PERIPH_CLK_SOURCE_MASK;
+        }
+
         if (c->flags & MUX) {
                 for (sel = c->inputs; sel->input != NULL; sel++) {
-                        if (val >> PERIPH_CLK_SOURCE_SHIFT == sel->value)
+                        if ((val & mask) >> shift == sel->value)
                                 mux = sel;
                 }
                 BUG_ON(!mux);
@@ -1023,12 +1036,23 @@ static int tegra2_periph_clk_set_parent(struct clk *c, struct clk *p)
 {
         u32 val;
         const struct clk_mux_sel *sel;
+        u32 mask, shift;
+
         pr_debug("%s: %s %s\n", __func__, c->name, p->name);
+
+        if (c->flags & MUX_PWM) {
+                shift = PERIPH_CLK_SOURCE_PWM_SHIFT;
+                mask = PERIPH_CLK_SOURCE_PWM_MASK;
+        } else {
+                shift = PERIPH_CLK_SOURCE_SHIFT;
+                mask = PERIPH_CLK_SOURCE_MASK;
+        }
+
         for (sel = c->inputs; sel->input != NULL; sel++) {
                 if (sel->input == p) {
                         val = clk_readl(c->reg);
-                        val &= ~PERIPH_CLK_SOURCE_MASK;
-                        val |= (sel->value) << PERIPH_CLK_SOURCE_SHIFT;
+                        val &= ~mask;
+                        val |= (sel->value) << shift;
 
                         if (c->refcnt)
                                 clk_enable(p);
@@ -2149,14 +2173,14 @@ static struct clk tegra_clk_emc = {
         }
 
 static struct clk tegra_list_clks[] = {
-        PERIPH_CLK("apbdma",    "tegra-dma",            NULL,   34,     0,      108000000, mux_pclk,                    0),
+        PERIPH_CLK("apbdma",    "tegra-apbdma",         NULL,   34,     0,      108000000, mux_pclk,                    0),
         PERIPH_CLK("rtc",       "rtc-tegra",            NULL,   4,      0,      32768,     mux_clk_32k,                 PERIPH_NO_RESET),
         PERIPH_CLK("timer",     "timer",                NULL,   5,      0,      26000000,  mux_clk_m,                   0),
         PERIPH_CLK("i2s1",      "tegra20-i2s.0",        NULL,   11,     0x100,  26000000,  mux_pllaout0_audio2x_pllp_clkm,      MUX | DIV_U71),
         PERIPH_CLK("i2s2",      "tegra20-i2s.1",        NULL,   18,     0x104,  26000000,  mux_pllaout0_audio2x_pllp_clkm,      MUX | DIV_U71),
         PERIPH_CLK("spdif_out", "spdif_out",            NULL,   10,     0x108,  100000000, mux_pllaout0_audio2x_pllp_clkm,      MUX | DIV_U71),
         PERIPH_CLK("spdif_in",  "spdif_in",             NULL,   10,     0x10c,  100000000, mux_pllp_pllc_pllm,          MUX | DIV_U71),
-        PERIPH_CLK("pwm",       "pwm",                  NULL,   17,     0x110,  432000000, mux_pllp_pllc_audio_clkm_clk32,      MUX | DIV_U71),
+        PERIPH_CLK("pwm",       "tegra-pwm",            NULL,   17,     0x110,  432000000, mux_pllp_pllc_audio_clkm_clk32,      MUX | DIV_U71 | MUX_PWM),
         PERIPH_CLK("spi",       "spi",                  NULL,   43,     0x114,  40000000,  mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71),
         PERIPH_CLK("xio",       "xio",                  NULL,   45,     0x120,  150000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71),
         PERIPH_CLK("twc",       "twc",                  NULL,   16,     0x12c,  150000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71),
@@ -2189,11 +2213,11 @@ static struct clk tegra_list_clks[] = {
         PERIPH_CLK("i2c2_i2c",  "tegra-i2c.1",          "i2c",  0,      0,      72000000,  mux_pllp_out3,                       0),
         PERIPH_CLK("i2c3_i2c",  "tegra-i2c.2",          "i2c",  0,      0,      72000000,  mux_pllp_out3,                       0),
         PERIPH_CLK("dvc_i2c",   "tegra-i2c.3",          "i2c",  0,      0,      72000000,  mux_pllp_out3,                       0),
-        PERIPH_CLK("uarta",     "uart.0",               NULL,   6,      0x178,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
-        PERIPH_CLK("uartb",     "uart.1",               NULL,   7,      0x17c,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
-        PERIPH_CLK("uartc",     "uart.2",               NULL,   55,     0x1a0,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
-        PERIPH_CLK("uartd",     "uart.3",               NULL,   65,     0x1c0,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
-        PERIPH_CLK("uarte",     "uart.4",               NULL,   66,     0x1c4,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
+        PERIPH_CLK("uarta",     "tegra-uart.0",         NULL,   6,      0x178,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
+        PERIPH_CLK("uartb",     "tegra-uart.1",         NULL,   7,      0x17c,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
+        PERIPH_CLK("uartc",     "tegra-uart.2",         NULL,   55,     0x1a0,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
+        PERIPH_CLK("uartd",     "tegra-uart.3",         NULL,   65,     0x1c0,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
+        PERIPH_CLK("uarte",     "tegra-uart.4",         NULL,   66,     0x1c4,  600000000, mux_pllp_pllc_pllm_clkm,     MUX),
         PERIPH_CLK("3d",        "3d",                   NULL,   24,     0x158,  300000000, mux_pllm_pllc_pllp_plla,     MUX | DIV_U71 | PERIPH_MANUAL_RESET), /* scales with voltage and process_id */
         PERIPH_CLK("2d",        "2d",                   NULL,   21,     0x15c,  300000000, mux_pllm_pllc_pllp_plla,     MUX | DIV_U71), /* scales with voltage and process_id */
         PERIPH_CLK("vi",        "tegra_camera",         "vi",   20,     0x148,  150000000, mux_pllm_pllc_pllp_plla,     MUX | DIV_U71), /* scales with voltage and process_id */
@@ -2245,20 +2269,16 @@ static struct clk tegra_list_clks[] = {
  * table under two names.
  */
 static struct clk_duplicate tegra_clk_duplicates[] = {
-        CLK_DUPLICATE("uarta",  "tegra_uart.0", NULL),
-        CLK_DUPLICATE("uartb",  "tegra_uart.1", NULL),
-        CLK_DUPLICATE("uartc",  "tegra_uart.2", NULL),
-        CLK_DUPLICATE("uartd",  "tegra_uart.3", NULL),
-        CLK_DUPLICATE("uarte",  "tegra_uart.4", NULL),
+        CLK_DUPLICATE("uarta",  "serial8250.0", NULL),
+        CLK_DUPLICATE("uartb",  "serial8250.1", NULL),
+        CLK_DUPLICATE("uartc",  "serial8250.2", NULL),
+        CLK_DUPLICATE("uartd",  "serial8250.3", NULL),
+        CLK_DUPLICATE("uarte",  "serial8250.4", NULL),
         CLK_DUPLICATE("usbd", "utmip-pad", NULL),
         CLK_DUPLICATE("usbd", "tegra-ehci.0", NULL),
         CLK_DUPLICATE("usbd", "tegra-otg", NULL),
         CLK_DUPLICATE("hdmi", "tegradc.0", "hdmi"),
         CLK_DUPLICATE("hdmi", "tegradc.1", "hdmi"),
-        CLK_DUPLICATE("pwm", "tegra_pwm.0", NULL),
-        CLK_DUPLICATE("pwm", "tegra_pwm.1", NULL),
-        CLK_DUPLICATE("pwm", "tegra_pwm.2", NULL),
-        CLK_DUPLICATE("pwm", "tegra_pwm.3", NULL),
         CLK_DUPLICATE("host1x", "tegra_grhost", "host1x"),
         CLK_DUPLICATE("2d", "tegra_grhost", "gr2d"),
         CLK_DUPLICATE("3d", "tegra_grhost", "gr3d"),
diff --git a/arch/arm/mach-tegra/tegra30_clocks.c b/arch/arm/mach-tegra/tegra30_clocks.c
index e33fe4b14a2..6674f100e16 100644
--- a/arch/arm/mach-tegra/tegra30_clocks.c
+++ b/arch/arm/mach-tegra/tegra30_clocks.c
@@ -2871,7 +2871,7 @@ static struct clk tegra30_clk_twd = {
                 },                                      \
         }
 struct clk tegra_list_clks[] = {
-        PERIPH_CLK("apbdma",    "tegra-dma",            NULL,   34,     0,      26000000,  mux_clk_m,                   0),
+        PERIPH_CLK("apbdma",    "tegra-apbdma",         NULL,   34,     0,      26000000,  mux_clk_m,                   0),
         PERIPH_CLK("rtc",       "rtc-tegra",            NULL,   4,      0,      32768,     mux_clk_32k,                 PERIPH_NO_RESET | PERIPH_ON_APB),
         PERIPH_CLK("kbc",       "tegra-kbc",            NULL,   36,     0,      32768,     mux_clk_32k,                 PERIPH_NO_RESET | PERIPH_ON_APB),
         PERIPH_CLK("timer",     "timer",                NULL,   5,      0,      26000000,  mux_clk_m,                   0),
@@ -2886,7 +2886,7 @@ struct clk tegra_list_clks[] = {
         PERIPH_CLK("i2s4",      "tegra30-i2s.4",        NULL,   102,    0x3c0,  26000000,  mux_pllaout0_audio4_2x_pllp_clkm,    MUX | DIV_U71 | PERIPH_ON_APB),
         PERIPH_CLK("spdif_out", "tegra30-spdif",        "spdif_out",    10,     0x108,  100000000, mux_pllaout0_audio_2x_pllp_clkm,     MUX | DIV_U71 | PERIPH_ON_APB),
         PERIPH_CLK("spdif_in",  "tegra30-spdif",        "spdif_in",     10,     0x10c,  100000000, mux_pllp_pllc_pllm,          MUX | DIV_U71 | PERIPH_ON_APB),
-        PERIPH_CLK("pwm",       "pwm",                  NULL,   17,     0x110,  432000000, mux_pllp_pllc_clk32_clkm,    MUX | MUX_PWM | DIV_U71 | PERIPH_ON_APB),
+        PERIPH_CLK("pwm",       "tegra-pwm",            NULL,   17,     0x110,  432000000, mux_pllp_pllc_clk32_clkm,    MUX | MUX_PWM | DIV_U71 | PERIPH_ON_APB),
         PERIPH_CLK("d_audio",   "tegra30-ahub",         "d_audio", 106, 0x3d0,  48000000,  mux_plla_pllc_pllp_clkm,     MUX | DIV_U71),
         PERIPH_CLK("dam0",      "tegra30-dam.0",        NULL,   108,    0x3d8,  48000000,  mux_plla_pllc_pllp_clkm,     MUX | DIV_U71),
         PERIPH_CLK("dam1",      "tegra30-dam.1",        NULL,   109,    0x3dc,  48000000,  mux_plla_pllc_pllp_clkm,     MUX | DIV_U71),
@@ -2924,16 +2924,11 @@ struct clk tegra_list_clks[] = {
         PERIPH_CLK("i2c3",      "tegra-i2c.2",          NULL,   67,     0x1b8,  26000000,  mux_pllp_clkm,               MUX | DIV_U16 | PERIPH_ON_APB),
         PERIPH_CLK("i2c4",      "tegra-i2c.3",          NULL,   103,    0x3c4,  26000000,  mux_pllp_clkm,               MUX | DIV_U16 | PERIPH_ON_APB),
         PERIPH_CLK("i2c5",      "tegra-i2c.4",          NULL,   47,     0x128,  26000000,  mux_pllp_clkm,               MUX | DIV_U16 | PERIPH_ON_APB),
-        PERIPH_CLK("uarta",     "tegra_uart.0",         NULL,   6,      0x178,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uartb",     "tegra_uart.1",         NULL,   7,      0x17c,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uartc",     "tegra_uart.2",         NULL,   55,     0x1a0,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uartd",     "tegra_uart.3",         NULL,   65,     0x1c0,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uarte",     "tegra_uart.4",         NULL,   66,     0x1c4,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uarta_dbg", "serial8250.0",         "uarta", 6,     0x178,  800000000, mux_pllp_clkm,               MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uartb_dbg", "serial8250.0",         "uartb", 7,     0x17c,  800000000, mux_pllp_clkm,               MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uartc_dbg", "serial8250.0",         "uartc", 55,    0x1a0,  800000000, mux_pllp_clkm,               MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uartd_dbg", "serial8250.0",         "uartd", 65,    0x1c0,  800000000, mux_pllp_clkm,               MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
-        PERIPH_CLK("uarte_dbg", "serial8250.0",         "uarte", 66,    0x1c4,  800000000, mux_pllp_clkm,               MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
+        PERIPH_CLK("uarta",     "tegra-uart.0",         NULL,   6,      0x178,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
+        PERIPH_CLK("uartb",     "tegra-uart.1",         NULL,   7,      0x17c,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
+        PERIPH_CLK("uartc",     "tegra-uart.2",         NULL,   55,     0x1a0,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
+        PERIPH_CLK("uartd",     "tegra-uart.3",         NULL,   65,     0x1c0,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
+        PERIPH_CLK("uarte",     "tegra-uart.4",         NULL,   66,     0x1c4,  800000000, mux_pllp_pllc_pllm_clkm,     MUX | DIV_U71 | DIV_U71_UART | PERIPH_ON_APB),
         PERIPH_CLK_EX("vi",     "tegra_camera",         "vi",   20,     0x148,  425000000, mux_pllm_pllc_pllp_plla,     MUX | DIV_U71 | DIV_U71_INT,    &tegra_vi_clk_ops),
         PERIPH_CLK("3d",        "3d",                   NULL,   24,     0x158,  520000000, mux_pllm_pllc_pllp_plla,     MUX | DIV_U71 | DIV_U71_INT | DIV_U71_IDLE | PERIPH_MANUAL_RESET),
         PERIPH_CLK("3d2",       "3d2",                  NULL,   98,     0x3b0,  520000000, mux_pllm_pllc_pllp_plla,     MUX | DIV_U71 | DIV_U71_INT | DIV_U71_IDLE | PERIPH_MANUAL_RESET),
@@ -2983,6 +2978,11 @@ struct clk tegra_list_clks[] = {
  * table under two names.
  */
 struct clk_duplicate tegra_clk_duplicates[] = {
+        CLK_DUPLICATE("uarta",  "serial8250.0", NULL),
+        CLK_DUPLICATE("uartb",  "serial8250.1", NULL),
+        CLK_DUPLICATE("uartc",  "serial8250.2", NULL),
+        CLK_DUPLICATE("uartd",  "serial8250.3", NULL),
+        CLK_DUPLICATE("uarte",  "serial8250.4", NULL),
         CLK_DUPLICATE("usbd", "utmip-pad", NULL),
         CLK_DUPLICATE("usbd", "tegra-ehci.0", NULL),
         CLK_DUPLICATE("usbd", "tegra-otg", NULL),
@@ -2990,10 +2990,6 @@ struct clk_duplicate tegra_clk_duplicates[] = {
         CLK_DUPLICATE("hdmi", "tegradc.1", "hdmi"),
         CLK_DUPLICATE("dsib", "tegradc.0", "dsib"),
         CLK_DUPLICATE("dsia", "tegradc.1", "dsia"),
-        CLK_DUPLICATE("pwm", "tegra_pwm.0", NULL),
-        CLK_DUPLICATE("pwm", "tegra_pwm.1", NULL),
-        CLK_DUPLICATE("pwm", "tegra_pwm.2", NULL),
-        CLK_DUPLICATE("pwm", "tegra_pwm.3", NULL),
         CLK_DUPLICATE("bsev", "tegra-avp", "bsev"),
         CLK_DUPLICATE("bsev", "nvavp", "bsev"),
         CLK_DUPLICATE("vde", "tegra-aes", "vde"),
diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c
index 315672c7bd4..57b5bdc13b9 100644
--- a/arch/arm/mach-tegra/timer.c
+++ b/arch/arm/mach-tegra/timer.c
@@ -189,7 +189,7 @@ static void __init tegra_init_timer(void)
                         " Assuming 12Mhz input clock.\n");
                 rate = 12000000;
         } else {
-                clk_enable(clk);
+                clk_prepare_enable(clk);
                 rate = clk_get_rate(clk);
         }
 
@@ -201,7 +201,7 @@ static void __init tegra_init_timer(void)
         if (IS_ERR(clk))
                 pr_warn("Unable to get rtc-tegra clock\n");
         else
-                clk_enable(clk);
+                clk_prepare_enable(clk);
 
         switch (rate) {
         case 12000000:
diff --git a/arch/arm/mach-tegra/usb_phy.c b/arch/arm/mach-tegra/usb_phy.c
index 54e353c8e30..022b33a05c3 100644
--- a/arch/arm/mach-tegra/usb_phy.c
+++ b/arch/arm/mach-tegra/usb_phy.c
@@ -247,7 +247,7 @@ static void utmip_pad_power_on(struct tegra_usb_phy *phy)
         unsigned long val, flags;
         void __iomem *base = phy->pad_regs;
 
-        clk_enable(phy->pad_clk);
+        clk_prepare_enable(phy->pad_clk);
 
         spin_lock_irqsave(&utmip_pad_lock, flags);
 
@@ -259,7 +259,7 @@ static void utmip_pad_power_on(struct tegra_usb_phy *phy)
 
         spin_unlock_irqrestore(&utmip_pad_lock, flags);
 
-        clk_disable(phy->pad_clk);
+        clk_disable_unprepare(phy->pad_clk);
 }
 
 static int utmip_pad_power_off(struct tegra_usb_phy *phy)
@@ -272,7 +272,7 @@ static int utmip_pad_power_off(struct tegra_usb_phy *phy)
                 return -EINVAL;
         }
 
-        clk_enable(phy->pad_clk);
+        clk_prepare_enable(phy->pad_clk);
 
         spin_lock_irqsave(&utmip_pad_lock, flags);
 
@@ -284,7 +284,7 @@ static int utmip_pad_power_off(struct tegra_usb_phy *phy)
 
         spin_unlock_irqrestore(&utmip_pad_lock, flags);
 
-        clk_disable(phy->pad_clk);
+        clk_disable_unprepare(phy->pad_clk);
 
         return 0;
 }
@@ -580,7 +580,7 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy)
         msleep(5);
         gpio_direction_output(config->reset_gpio, 1);
 
-        clk_enable(phy->clk);
+        clk_prepare_enable(phy->clk);
         msleep(1);
 
         val = readl(base + USB_SUSP_CTRL);
@@ -689,7 +689,7 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
                 err = PTR_ERR(phy->pll_u);
                 goto err0;
         }
-        clk_enable(phy->pll_u);
+        clk_prepare_enable(phy->pll_u);
 
         parent_rate = clk_get_rate(clk_get_parent(phy->pll_u));
         for (i = 0; i < ARRAY_SIZE(tegra_freq_table); i++) {
@@ -735,7 +735,7 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
         return phy;
 
 err1:
-        clk_disable(phy->pll_u);
+        clk_disable_unprepare(phy->pll_u);
         clk_put(phy->pll_u);
 err0:
         kfree(phy);
@@ -810,7 +810,7 @@ void tegra_usb_phy_close(struct tegra_usb_phy *phy)
                 clk_put(phy->clk);
         else
                 utmip_pad_close(phy);
-        clk_disable(phy->pll_u);
+        clk_disable_unprepare(phy->pll_u);
         clk_put(phy->pll_u);
         kfree(phy);
 }
diff --git a/drivers/crypto/tegra-aes.c b/drivers/crypto/tegra-aes.c
index 422a9766c7c..ac236f6724f 100644
--- a/drivers/crypto/tegra-aes.c
+++ b/drivers/crypto/tegra-aes.c
@@ -572,7 +572,7 @@ static void aes_workqueue_handler(struct work_struct *work)
         struct tegra_aes_dev *dd = aes_dev;
         int ret;
 
-        ret = clk_enable(dd->aes_clk);
+        ret = clk_prepare_enable(dd->aes_clk);
         if (ret)
                 BUG_ON("clock enable failed");
 
@@ -581,7 +581,7 @@ static void aes_workqueue_handler(struct work_struct *work)
                 ret = tegra_aes_handle_req(dd);
         } while (!ret);
 
-        clk_disable(dd->aes_clk);
+        clk_disable_unprepare(dd->aes_clk);
 }
 
 static irqreturn_t aes_irq(int irq, void *dev_id)
@@ -673,7 +673,7 @@ static int tegra_aes_get_random(struct crypto_rng *tfm, u8 *rdata,
         /* take mutex to access the aes hw */
         mutex_lock(&aes_lock);
 
-        ret = clk_enable(dd->aes_clk);
+        ret = clk_prepare_enable(dd->aes_clk);
         if (ret)
                 return ret;
 
@@ -700,7 +700,7 @@ static int tegra_aes_get_random(struct crypto_rng *tfm, u8 *rdata,
         }
 
 out:
-        clk_disable(dd->aes_clk);
+        clk_disable_unprepare(dd->aes_clk);
         mutex_unlock(&aes_lock);
 
         dev_dbg(dd->dev, "%s: done\n", __func__);
@@ -758,7 +758,7 @@ static int tegra_aes_rng_reset(struct crypto_rng *tfm, u8 *seed,
 
         dd->flags = FLAGS_ENCRYPT | FLAGS_RNG;
 
-        ret = clk_enable(dd->aes_clk);
+        ret = clk_prepare_enable(dd->aes_clk);
         if (ret)
                 return ret;
 
@@ -788,7 +788,7 @@ static int tegra_aes_rng_reset(struct crypto_rng *tfm, u8 *seed,
         memcpy(dd->dt, dt, DEFAULT_RNG_BLK_SZ);
 
 out:
-        clk_disable(dd->aes_clk);
+        clk_disable_unprepare(dd->aes_clk);
         mutex_unlock(&aes_lock);
 
         dev_dbg(dd->dev, "%s: done\n", __func__);
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 8b2e555a956..3da7ee3eb50 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -341,7 +341,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
         u32 val;
         int err = 0;
 
-        clk_enable(i2c_dev->clk);
+        clk_prepare_enable(i2c_dev->clk);
 
         tegra_periph_reset_assert(i2c_dev->clk);
         udelay(2);
@@ -372,7 +372,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
         if (tegra_i2c_flush_fifos(i2c_dev))
                 err = -ETIMEDOUT;
 
-        clk_disable(i2c_dev->clk);
+        clk_disable_unprepare(i2c_dev->clk);
 
         if (i2c_dev->irq_disabled) {
                 i2c_dev->irq_disabled = 0;
@@ -546,14 +546,14 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
         if (i2c_dev->is_suspended)
                 return -EBUSY;
 
-        clk_enable(i2c_dev->clk);
+        clk_prepare_enable(i2c_dev->clk);
         for (i = 0; i < num; i++) {
                 int stop = (i == (num - 1)) ? 1  : 0;
                 ret = tegra_i2c_xfer_msg(i2c_dev, &msgs[i], stop);
                 if (ret)
                         break;
         }
-        clk_disable(i2c_dev->clk);
+        clk_disable_unprepare(i2c_dev->clk);
         return ret ?: i;
 }
 
@@ -666,7 +666,7 @@ static int __devinit tegra_i2c_probe(struct platform_device *pdev)
                 goto err_free;
         }
 
-        clk_enable(i2c_dev->i2c_clk);
+        clk_prepare_enable(i2c_dev->i2c_clk);
 
         i2c_set_adapdata(&i2c_dev->adapter, i2c_dev);
         i2c_dev->adapter.owner = THIS_MODULE;
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index 4ffe64d5310..2c1c9ed1bd9 100644
--- a/drivers/input/keyboard/tegra-kbc.c
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -492,7 +492,7 @@ static int tegra_kbc_start(struct tegra_kbc *kbc)
         unsigned int debounce_cnt;
         u32 val = 0;
 
-        clk_enable(kbc->clk);
+        clk_prepare_enable(kbc->clk);
 
         /* Reset the KBC controller to clear all previous status.*/
         tegra_periph_reset_assert(kbc->clk);
@@ -556,7 +556,7 @@ static void tegra_kbc_stop(struct tegra_kbc *kbc)
         disable_irq(kbc->irq);
         del_timer_sync(&kbc->timer);
 
-        clk_disable(kbc->clk);
+        clk_disable_unprepare(kbc->clk);
 }
 
 static int tegra_kbc_open(struct input_dev *dev)
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 6e5338a071c..0810ccc23d7 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -337,7 +337,7 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
                 rc = PTR_ERR(clk);
                 goto err_clk_get;
         }
-        clk_enable(clk);
+        clk_prepare_enable(clk);
         pltfm_host->clk = clk;
 
         host->mmc->pm_caps = plat->pm_flags;
@@ -352,7 +352,7 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
         return 0;
 
 err_add_host:
-        clk_disable(pltfm_host->clk);
+        clk_disable_unprepare(pltfm_host->clk);
         clk_put(pltfm_host->clk);
 err_clk_get:
         if (gpio_is_valid(plat->wp_gpio))
@@ -393,7 +393,7 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev)
         if (gpio_is_valid(plat->power_gpio))
                 gpio_free(plat->power_gpio);
 
-        clk_disable(pltfm_host->clk);
+        clk_disable_unprepare(pltfm_host->clk);
         clk_put(pltfm_host->clk);
 
         sdhci_pltfm_free(pdev);
diff --git a/drivers/spi/spi-tegra.c b/drivers/spi/spi-tegra.c
index ae6d78a3e91..7f99ff3553a 100644
--- a/drivers/spi/spi-tegra.c
+++ b/drivers/spi/spi-tegra.c
@@ -261,7 +261,7 @@ static void spi_tegra_start_transfer(struct spi_device *spi,
                 clk_set_rate(tspi->clk, speed);
 
         if (tspi->cur_speed == 0)
-                clk_enable(tspi->clk);
+                clk_prepare_enable(tspi->clk);
 
         tspi->cur_speed = speed;
 
@@ -373,7 +373,7 @@ static void tegra_spi_rx_dma_complete(struct tegra_dma_req *req)
                         spi = m->state;
                         spi_tegra_start_message(spi, m);
                 } else {
-                        clk_disable(tspi->clk);
+                        clk_disable_unprepare(tspi->clk);
                         tspi->cur_speed = 0;
                 }
         }
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 3c60088871e..9356886f489 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -675,7 +675,7 @@ static void tegra_init_i2c_slave(struct nvec_chip *nvec)
 {
         u32 val;
 
-        clk_enable(nvec->i2c_clk);
+        clk_prepare_enable(nvec->i2c_clk);
 
         tegra_periph_reset_assert(nvec->i2c_clk);
         udelay(2);
@@ -695,14 +695,14 @@ static void tegra_init_i2c_slave(struct nvec_chip *nvec)
 
         enable_irq(nvec->irq);
 
-        clk_disable(nvec->i2c_clk);
+        clk_disable_unprepare(nvec->i2c_clk);
 }
 
 static void nvec_disable_i2c_slave(struct nvec_chip *nvec)
 {
         disable_irq(nvec->irq);
         writel(I2C_SL_NEWSL | I2C_SL_NACK, nvec->base + I2C_SL_CNFG);
-        clk_disable(nvec->i2c_clk);
+        clk_disable_unprepare(nvec->i2c_clk);
 }
 
 static void nvec_power_off(void)
@@ -812,7 +812,7 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
 
         tegra_init_i2c_slave(nvec);
 
-        clk_enable(i2c_clk);
+        clk_prepare_enable(i2c_clk);
 
 
         /* enable event reporting */
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 68548236ec4..ab8a3bf628e 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -46,8 +46,8 @@ static void tegra_ehci_power_up(struct usb_hcd *hcd)
 {
         struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller);
 
-        clk_enable(tegra->emc_clk);
-        clk_enable(tegra->clk);
+        clk_prepare_enable(tegra->emc_clk);
+        clk_prepare_enable(tegra->clk);
         tegra_usb_phy_power_on(tegra->phy);
         tegra->host_resumed = 1;
 }
@@ -58,8 +58,8 @@ static void tegra_ehci_power_down(struct usb_hcd *hcd)
 
         tegra->host_resumed = 0;
         tegra_usb_phy_power_off(tegra->phy);
-        clk_disable(tegra->clk);
-        clk_disable(tegra->emc_clk);
+        clk_disable_unprepare(tegra->clk);
+        clk_disable_unprepare(tegra->emc_clk);
 }
 
 static int tegra_ehci_internal_port_reset(
@@ -671,7 +671,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
                 goto fail_clk;
         }
 
-        err = clk_enable(tegra->clk);
+        err = clk_prepare_enable(tegra->clk);
         if (err)
                 goto fail_clken;
 
@@ -682,7 +682,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
                 goto fail_emc_clk;
         }
 
-        clk_enable(tegra->emc_clk);
+        clk_prepare_enable(tegra->emc_clk);
         clk_set_rate(tegra->emc_clk, 400000000);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -782,10 +782,10 @@ fail:
 fail_phy:
         iounmap(hcd->regs);
 fail_io:
-        clk_disable(tegra->emc_clk);
+        clk_disable_unprepare(tegra->emc_clk);
         clk_put(tegra->emc_clk);
 fail_emc_clk:
-        clk_disable(tegra->clk);
+        clk_disable_unprepare(tegra->clk);
 fail_clken:
         clk_put(tegra->clk);
 fail_clk:
@@ -820,10 +820,10 @@ static int tegra_ehci_remove(struct platform_device *pdev)
         tegra_usb_phy_close(tegra->phy);
         iounmap(hcd->regs);
 
-        clk_disable(tegra->clk);
+        clk_disable_unprepare(tegra->clk);
         clk_put(tegra->clk);
 
-        clk_disable(tegra->emc_clk);
+        clk_disable_unprepare(tegra->emc_clk);
         clk_put(tegra->emc_clk);
 
         kfree(tegra);
diff --git a/sound/soc/tegra/tegra20_i2s.c b/sound/soc/tegra/tegra20_i2s.c
index 0c7af63d444..1647dbfe74b 100644
--- a/sound/soc/tegra/tegra20_i2s.c
+++ b/sound/soc/tegra/tegra20_i2s.c
@@ -62,7 +62,7 @@ static int tegra20_i2s_runtime_suspend(struct device *dev)
 {
         struct tegra20_i2s *i2s = dev_get_drvdata(dev);
 
-        clk_disable(i2s->clk_i2s);
+        clk_disable_unprepare(i2s->clk_i2s);
 
         return 0;
 }
@@ -72,7 +72,7 @@ static int tegra20_i2s_runtime_resume(struct device *dev)
         struct tegra20_i2s *i2s = dev_get_drvdata(dev);
         int ret;
 
-        ret = clk_enable(i2s->clk_i2s);
+        ret = clk_prepare_enable(i2s->clk_i2s);
         if (ret) {
                 dev_err(dev, "clk_enable failed: %d\n", ret);
                 return ret;
diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index f9b57418bd0..2262e4fdec2 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -54,7 +54,7 @@ static int tegra20_spdif_runtime_suspend(struct device *dev)
 {
         struct tegra20_spdif *spdif = dev_get_drvdata(dev);
 
-        clk_disable(spdif->clk_spdif_out);
+        clk_disable_unprepare(spdif->clk_spdif_out);
 
         return 0;
 }
@@ -64,7 +64,7 @@ static int tegra20_spdif_runtime_resume(struct device *dev)
         struct tegra20_spdif *spdif = dev_get_drvdata(dev);
         int ret;
 
-        ret = clk_enable(spdif->clk_spdif_out);
+        ret = clk_prepare_enable(spdif->clk_spdif_out);
         if (ret) {
                 dev_err(dev, "clk_enable failed: %d\n", ret);
                 return ret;
diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index f43edb364a1..bf5610122c7 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c
@@ -56,8 +56,8 @@ static int tegra30_ahub_runtime_suspend(struct device *dev)
         regcache_cache_only(ahub->regmap_apbif, true);
         regcache_cache_only(ahub->regmap_ahub, true);
 
-        clk_disable(ahub->clk_apbif);
-        clk_disable(ahub->clk_d_audio);
+        clk_disable_unprepare(ahub->clk_apbif);
+        clk_disable_unprepare(ahub->clk_d_audio);
 
         return 0;
 }
@@ -77,12 +77,12 @@ static int tegra30_ahub_runtime_resume(struct device *dev)
 {
         int ret;
 
-        ret = clk_enable(ahub->clk_d_audio);
+        ret = clk_prepare_enable(ahub->clk_d_audio);
         if (ret) {
                 dev_err(dev, "clk_enable d_audio failed: %d\n", ret);
                 return ret;
         }
-        ret = clk_enable(ahub->clk_apbif);
+        ret = clk_prepare_enable(ahub->clk_apbif);
         if (ret) {
                 dev_err(dev, "clk_enable apbif failed: %d\n", ret);
                 clk_disable(ahub->clk_d_audio);
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 8596032985d..d308faaae14 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -62,7 +62,7 @@ static int tegra30_i2s_runtime_suspend(struct device *dev)
 
         regcache_cache_only(i2s->regmap, true);
 
-        clk_disable(i2s->clk_i2s);
+        clk_disable_unprepare(i2s->clk_i2s);
 
         return 0;
 }
@@ -72,7 +72,7 @@ static int tegra30_i2s_runtime_resume(struct device *dev)
         struct tegra30_i2s *i2s = dev_get_drvdata(dev);
         int ret;
 
-        ret = clk_enable(i2s->clk_i2s);
+        ret = clk_prepare_enable(i2s->clk_i2s);
         if (ret) {
                 dev_err(dev, "clk_enable failed: %d\n", ret);
                 return ret;
diff --git a/sound/soc/tegra/tegra_asoc_utils.c b/sound/soc/tegra/tegra_asoc_utils.c
index 9515ce58ea0..6872c77a119 100644
--- a/sound/soc/tegra/tegra_asoc_utils.c
+++ b/sound/soc/tegra/tegra_asoc_utils.c
@@ -69,9 +69,9 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
         data->set_baseclock = 0;
         data->set_mclk = 0;
 
-        clk_disable(data->clk_cdev1);
-        clk_disable(data->clk_pll_a_out0);
-        clk_disable(data->clk_pll_a);
+        clk_disable_unprepare(data->clk_cdev1);
+        clk_disable_unprepare(data->clk_pll_a_out0);
+        clk_disable_unprepare(data->clk_pll_a);
 
         err = clk_set_rate(data->clk_pll_a, new_baseclock);
         if (err) {
@@ -87,19 +87,19 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
 
         /* Don't set cdev1/extern1 rate; it's locked to pll_a_out0 */
 
-        err = clk_enable(data->clk_pll_a);
+        err = clk_prepare_enable(data->clk_pll_a);
         if (err) {
                 dev_err(data->dev, "Can't enable pll_a: %d\n", err);
                 return err;
         }
 
-        err = clk_enable(data->clk_pll_a_out0);
+        err = clk_prepare_enable(data->clk_pll_a_out0);
         if (err) {
                 dev_err(data->dev, "Can't enable pll_a_out0: %d\n", err);
                 return err;
         }
 
-        err = clk_enable(data->clk_cdev1);
+        err = clk_prepare_enable(data->clk_cdev1);
         if (err) {
                 dev_err(data->dev, "Can't enable cdev1: %d\n", err);
                 return err;