[coreboot-gerrit] Change in coreboot[master]: mb/google/corsola: Configure audio

[Hung-Te Lin (Code Review)]

Hung-Te Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/60738 )

Change subject: mb/google/corsola: Configure audio
......................................................................

mb/google/corsola: Configure audio

According schematics, we configure audio by turning on setting of
audio power and selecting I2S pin-mux.

Schematics references:
kingler: schematic_kingler_proto0_gerber_20211115.pdf
krabby: crab_proto 0_20211112_final.pdf

BUG=b:204164695
TEST=Verified by CLI command(badusbbeep/devbeep) on kingler and krabby

Signed-off-by: Jiaxin Yu 
Change-Id: Ia6374d0e5535b7cff4df8759312786fef8b94b6b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60738
Tested-by: build bot (Jenkins) 
Reviewed-by: Rex-BC Chen 
Reviewed-by: Hung-Te Lin 
---
M src/mainboard/google/corsola/mainboard.c
1 file changed, 13 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Hung-Te Lin: Looks good to me, approved
  Rex-BC Chen: Looks good to me, but someone else must approve

diff --git a/src/mainboard/google/corsola/mainboard.c b/src/mainboard/google/corsola/mainboard.c
index 910d8d6..959dca6 100644
--- a/src/mainboard/google/corsola/mainboard.c
+++ b/src/mainboard/google/corsola/mainboard.c
@@ -24,6 +24,17 @@
    register_bl31_aux_param(&param_reset.h);
 }

+static void configure_audio(void)
+{
+	mtcmos_audio_power_on();
+
+	/* Set up I2S */
+	gpio_set_mode(GPIO(I2S2_MCK), PAD_I2S2_MCK_FUNC_I2S2_MCK);
+	gpio_set_mode(GPIO(I2S2_BCK), PAD_I2S2_BCK_FUNC_I2S2_BCK);
+	gpio_set_mode(GPIO(I2S2_LRCK), PAD_I2S2_LRCK_FUNC_I2S2_LRCK);
+	gpio_set_mode(GPIO(EINT4), PAD_EINT4_FUNC_I2S3_DO);
+}
+
 static void mainboard_init(struct device *dev)
 {
    mtk_msdc_configure_emmc(true);
@@ -35,6 +46,8 @@

setup_usb_host();

+	configure_audio();
+
    if (spm_init())
    	printk(BIOS_ERR, "spm init failed, system suspend may not work\n");