diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/rush_ryu/mainboard.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/src/mainboard/google/rush_ryu/mainboard.c b/src/mainboard/google/rush_ryu/mainboard.c index 2b71c98038..81c15b47d8 100644 --- a/src/mainboard/google/rush_ryu/mainboard.c +++ b/src/mainboard/google/rush_ryu/mainboard.c @@ -57,8 +57,8 @@ static const struct pad_config mmcpads[] = { static const struct pad_config audio_codec_pads[] = { /* H1 is CODEC_RST_L and R2(ROW2) is AUDIO_ENABLE */ - PAD_CFG_GPIO_OUT1(GPIO_PH1, PINMUX_PULL_DOWN), - PAD_CFG_GPIO_OUT1(KB_ROW2, PINMUX_PULL_DOWN), + PAD_CFG_GPIO_OUT1(GPIO_PH1, PINMUX_PULL_DOWN), + PAD_CFG_GPIO_OUT1(KB_ROW2, PINMUX_PULL_DOWN), }; static const struct funit_cfg funits[] = { @@ -186,6 +186,30 @@ static int configure_display_blocks(void) return 0; } +/* Audio init: clocks and enables/resets */ +static void setup_audio(void) +{ + /* External peripheral 1: audio codec (RT5677) using 12MHz CLK1 */ + clock_configure_source(extperiph1, CLK_M, 12000); + + /* + * We need 1.5MHz for I2S1. So, we use CLK_M. CLK_DIVIDER macro + * returns a divisor (0xe) a little bit off from the ideal value (0xd), + * but it's good enough for beeps. + */ + clock_configure_source(i2s1, CLK_M, 1500); + + clock_external_output(1); /* For external RT5677 audio codec. */ + + /* + * Confirmed by NVIDIA hardware team, we need to take ALL audio devices + * connected to AHUB (AUDIO, APBIF, I2S, DAM, AMX, ADX, SPDIF, AFC) out + * of reset and clock-enabled, otherwise reading AHUB devices (in our + * case, I2S/APBIF/AUDIO<XBAR>) will hang. + */ + clock_enable_audio(); +} + static void mainboard_init(device_t dev) { soc_configure_funits(funits, ARRAY_SIZE(funits)); @@ -193,6 +217,9 @@ static void mainboard_init(device_t dev) /* I2C6 bus (audio, etc.) */ soc_configure_i2c6pad(); i2c_init(I2C6_BUS); + + setup_audio(); + elog_init(); elog_add_boot_reason(); |