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>

1 files changed, 14 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);