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>
git-mirror · Feb 21, 2011 · 1ca0034 · 1ca0034
1 parent 499ef7a
commit 1ca0034
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diff --git 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
@@ -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),