From: Stephen Warren <swarren@xxxxxxxxxx> Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx> --- This is for, and rediff'd against, for-next. The Tegra audio driver relies on this. The other DMA driver fix I just sent might rely on this in order to get zero fuzz/offset. arch/arm/mach-tegra/dma.c | 14 ++++++++++++++ arch/arm/mach-tegra/tegra2_clocks.c | 6 ++++++ 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c index edda6ec..d8eb096 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> @@ -646,6 +647,19 @@ 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 f7e1e68..ef46313 100644 --- a/arch/arm/mach-tegra/tegra2_clocks.c +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -1588,6 +1588,11 @@ 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, \ @@ -1604,6 +1609,7 @@ 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), -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html