diff options
Diffstat (limited to 'arch/arm/mach-tegra/clock.c')
| -rw-r--r-- | arch/arm/mach-tegra/clock.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c index cdd54388c52..24047b8c82f 100644 --- a/arch/arm/mach-tegra/clock.c +++ b/arch/arm/mach-tegra/clock.c @@ -17,11 +17,13 @@ /* Tegra SoC common clock control functions */ #include <common.h> +#include <errno.h> #include <asm/io.h> #include <asm/arch/clock.h> #include <asm/arch/tegra.h> #include <asm/arch-tegra/ap.h> #include <asm/arch-tegra/clk_rst.h> +#include <asm/arch-tegra/pmc.h> #include <asm/arch-tegra/timer.h> #include <div64.h> #include <fdtdec.h> @@ -82,7 +84,7 @@ static struct clk_pll *get_pll(enum clock_id clkid) assert(clock_id_is_pll(clkid)); if (clkid >= (enum clock_id)TEGRA_CLK_PLLS) { - debug("%s: Invalid PLL\n", __func__); + debug("%s: Invalid PLL %d\n", __func__, clkid); return NULL; } return &clkrst->crc_pll[clkid]; @@ -118,9 +120,12 @@ int clock_ll_read_pll(enum clock_id clkid, u32 *divm, u32 *divn, unsigned long clock_start_pll(enum clock_id clkid, u32 divm, u32 divn, u32 divp, u32 cpcon, u32 lfcon) { - struct clk_pll *pll = get_pll(clkid); + struct clk_pll *pll = NULL; u32 misc_data, data; + if (clkid < (enum clock_id)TEGRA_CLK_PLLS) + pll = get_pll(clkid); + /* * We cheat by treating all PLL (except PLLU) in the same fashion. * This works only because: @@ -702,3 +707,18 @@ void tegra30_set_up_pllp(void) set_avp_clock_source(SCLK_SOURCE_PLLP_OUT4); } + +int clock_external_output(int clk_id) +{ + struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; + + if (clk_id >= 1 && clk_id <= 3) { + setbits_le32(&pmc->pmc_clk_out_cntrl, + 1 << (2 + (clk_id - 1) * 8)); + } else { + printf("%s: Unknown output clock id %d\n", __func__, clk_id); + return -EINVAL; + } + + return 0; +} |