diff options
Diffstat (limited to 'board/nvidia/nyan-big/nyan-big.c')
| -rw-r--r-- | board/nvidia/nyan-big/nyan-big.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/board/nvidia/nyan-big/nyan-big.c b/board/nvidia/nyan-big/nyan-big.c index ae8874bbd2..ba96401890 100644 --- a/board/nvidia/nyan-big/nyan-big.c +++ b/board/nvidia/nyan-big/nyan-big.c @@ -8,7 +8,12 @@ #include <common.h> #include <errno.h> #include <asm/gpio.h> +#include <asm/io.h> #include <asm/arch/pinmux.h> +#include <asm/arch/clock.h> +#include <asm/arch/mc.h> +#include <asm/arch-tegra/clk_rst.h> +#include <asm/arch-tegra/pmc.h> #include <power/as3722.h> #include <power/pmic.h> #include "pinmux-config-nyan-big.h" @@ -57,3 +62,67 @@ int tegra_lcd_pmic_init(int board_id) return 0; } + +/* Setup required information for Linux kernel */ +static void setup_kernel_info(void) +{ + struct mc_ctlr *mc = (void *)NV_PA_MC_BASE; + + /* The kernel graphics driver needs this region locked down */ + writel(0, &mc->mc_video_protect_bom); + writel(0, &mc->mc_video_protect_size_mb); + writel(1, &mc->mc_video_protect_reg_ctrl); +} + +/* + * We need to take ALL audio devices conntected to AHUB (AUDIO, APBIF, + * I2S, DAM, AMX, ADX, SPDIF, AFC) out of reset and enable the clocks. + * Otherwise reading AHUB devices will hang when the kernel boots. + */ +static void enable_required_clocks(void) +{ + static enum periph_id ids[] = { + PERIPH_ID_I2S0, + PERIPH_ID_I2S1, + PERIPH_ID_I2S2, + PERIPH_ID_I2S3, + PERIPH_ID_I2S4, + PERIPH_ID_AUDIO, + PERIPH_ID_APBIF, + PERIPH_ID_DAM0, + PERIPH_ID_DAM1, + PERIPH_ID_DAM2, + PERIPH_ID_AMX0, + PERIPH_ID_AMX1, + PERIPH_ID_ADX0, + PERIPH_ID_ADX1, + PERIPH_ID_SPDIF, + PERIPH_ID_AFC0, + PERIPH_ID_AFC1, + PERIPH_ID_AFC2, + PERIPH_ID_AFC3, + PERIPH_ID_AFC4, + PERIPH_ID_AFC5, + PERIPH_ID_EXTPERIPH1 + }; + int i; + + for (i = 0; i < ARRAY_SIZE(ids); i++) + clock_enable(ids[i]); + udelay(2); + for (i = 0; i < ARRAY_SIZE(ids); i++) + reset_set_enable(ids[i], 0); +} + +int nvidia_board_init(void) +{ + clock_start_periph_pll(PERIPH_ID_EXTPERIPH1, CLOCK_ID_OSC, 12000000); + clock_start_periph_pll(PERIPH_ID_I2S1, CLOCK_ID_OSC, 1500000); + + /* For external MAX98090 audio codec */ + clock_external_output(1); + setup_kernel_info(); + enable_required_clocks(); + + return 0; +} |