diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/rush/mainboard.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/src/mainboard/google/rush/mainboard.c b/src/mainboard/google/rush/mainboard.c index bb4da19154..341d373971 100644 --- a/src/mainboard/google/rush/mainboard.c +++ b/src/mainboard/google/rush/mainboard.c @@ -95,18 +95,33 @@ static void setup_usb(void) usb_setup_utmip((void *)TEGRA_USB3_BASE); } +static const struct pad_config i2s1_pad[] = { + /* I2S1 */ + PAD_CFG_SFIO(DAP2_SCLK, PINMUX_INPUT_ENABLE, I2S1), + PAD_CFG_SFIO(DAP2_FS, PINMUX_INPUT_ENABLE, I2S1), + PAD_CFG_SFIO(DAP2_DOUT, PINMUX_INPUT_ENABLE, I2S1), + PAD_CFG_SFIO(DAP2_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1), + /* codec MCLK via EXTPERIPH1 */ + PAD_CFG_SFIO(DAP_MCLK1, PINMUX_PULL_NONE, EXTPERIPH1), +}; + +static const struct funit_cfg audio_funit[] = { + /* We need 1.5MHz for I2S1. So we use CLK_M */ + FUNIT_CFG(I2S1, CLK_M, 1500, i2s1_pad, ARRAY_SIZE(i2s1_pad)), +}; + /* Audio init: clocks and enables/resets */ static void setup_audio(void) { - /* External peripheral 1: audio codec (max98090) 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. + * External peripheral 1: audio codec (max98090) uses 12MHz CLK1 + * NOTE: We can't use a funits struct/call here because EXTPERIPH1/2/3 + * don't have BASE regs or CAR RST/ENA bits. Also, the mux setting for + * EXTPERIPH1/DAP_MCLK1 is rolled into the I2S1 padcfg. */ - clock_configure_source(i2s1, CLK_M, 1500); + clock_configure_source(extperiph1, CLK_M, 12000); + + soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit)); clock_external_output(1); /* For external MAX98090 audio codec. */ |