ARM: tegra: APB DMA: Enable clock and remove reset.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>

2 files changed, 20 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c
index 4625e3ae766e..2d720f2b6c75 100644
--- a/arch/arm/mach-tegra/dma.c
+++ b/arch/arm/mach-tegra/dma.c
@@ -27,6 +27,7 @@
 #include <linux/err.h>
 #include <linux/irq.h>
 #include <linux/delay.h>
+#include <linux/clk.h>
 #include <mach/dma.h>
 #include <mach/irqs.h>
 #include <mach/iomap.h>
@@ -675,6 +676,19 @@ int __init tegra_dma_init(void)
         int i;
         unsigned int irq;
         void __iomem *addr;
+        struct clk *c;
+
+        c = clk_get_sys("tegra-dma", 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);
+        if (ret != 0) {
+                pr_err("Unable to enable clock for APB DMA\n");
+                goto fail;
+        }
 
         addr = IO_ADDRESS(TEGRA_APB_DMA_BASE);
         writel(GEN_ENABLE, addr + APB_DMA_GEN);
diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c
index 7a2926ae2fd4..49b3edaca496 100644
--- a/arch/arm/mach-tegra/tegra2_clocks.c
+++ b/arch/arm/mach-tegra/tegra2_clocks.c
@@ -1759,6 +1759,11 @@ static struct clk_mux_sel mux_clk_32k[] = {
         { 0, 0},
 };
 
+static struct clk_mux_sel mux_pclk[] = {
+        { .input = &tegra_clk_pclk, .value = 0},
+        { 0, 0},
+};
+
 #define PERIPH_CLK(_name, _dev, _con, _clk_num, _reg, _max, _inputs, _flags) \
         {                                               \
                 .name      = _name,                     \
@@ -1775,6 +1780,7 @@ static struct clk_mux_sel mux_clk_32k[] = {
         }
 
 struct clk tegra_periph_clks[] = {
+        PERIPH_CLK("apbdma",    "tegra-dma",            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",      "i2s.0",                NULL,   11,     0x100,  26000000,  mux_pllaout0_audio2x_pllp_clkm,      MUX | DIV_U71),