diff options
Diffstat (limited to 'board/nvidia/common/board.c')
| -rw-r--r-- | board/nvidia/common/board.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c index 5cb219b4f9..1ad40a7b0d 100644 --- a/board/nvidia/common/board.c +++ b/board/nvidia/common/board.c @@ -152,6 +152,37 @@ static void pin_mux_uart(int uart_ids) #endif /* CONFIG_TEGRA2 */ } +#if defined(CONFIG_TEGRA3) +static void enable_clock(enum periph_id pid, int src) +{ + /* Assert reset and enable clock */ + reset_set_enable(pid, 1); + clock_enable(pid); + + /* Use 'src' if provided, else use default */ + if (src != -1) + clock_ll_set_source(pid, src); + + /* wait for 2us */ + udelay(2); + + /* De-assert reset */ + reset_set_enable(pid, 0); +} + +/* Init misc clocks for kernel booting */ +static void clock_init_misc(void) +{ + /* 0 = PLLA_OUT0, -1 = CLK_M (default) */ + enable_clock(PERIPH_ID_I2S0, -1); + enable_clock(PERIPH_ID_I2S1, 0); + enable_clock(PERIPH_ID_I2S2, 0); + enable_clock(PERIPH_ID_I2S3, 0); + enable_clock(PERIPH_ID_I2S4, -1); + enable_clock(PERIPH_ID_SPDIF, -1); +} +#endif + /* * Routine: pin_mux_switches * Description: Disable internal pullups for the write protect, SDIO3 write @@ -380,6 +411,11 @@ int board_early_init_f(void) init_uarts(gd->blob); #endif +#if defined(CONFIG_TEGRA3) + /* Initialize misc clocks for kernel booting */ + clock_init_misc(); +#endif + #ifdef CONFIG_VIDEO_TEGRA /* Get LCD panel size */ lcd_early_init(gd->blob); |