diff options
| author | Reka Norman <rekanorman@google.com> | 2022-03-30 12:44:24 +1100 |
|---|---|---|
| committer | Paul Fagerburg <pfagerburg@chromium.org> | 2022-04-01 13:44:52 +0000 |
| commit | 390c3f2b47fb9d9363cb2770e50c1977d0dcf418 (patch) | |
| tree | bf332c810966da895987b9bfe2018de14946c44f /src/mainboard/google/brya/variants/nereid | |
| parent | 56ed0bee8697a56b08ecfac0b8cb8a9cc312592a (diff) | |
mb/google/brya/var/nereid: Enable AUX DC biasing on C0 and C1
C0 has no redriver, so enable SBU muxing in the SoC.
C1 has a redriver which does SBU muxing, so disable SBU muxing in the
SoC. However, this also disables AUX biasing when the pins are
configured as NF6. So instead configure the C1 AUX bias pins as GPO.
BUG=b:227259673
TEST=Voltages are correct on the C0 and C1 AUX bias pins
Change-Id: Ic0af662ecc1c6cee15b4ae98cb02deeefc93a71e
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63199
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sam McNally <sammc@google.com>
Diffstat (limited to 'src/mainboard/google/brya/variants/nereid')
| -rw-r--r-- | src/mainboard/google/brya/variants/nereid/gpio.c | 4 | ||||
| -rw-r--r-- | src/mainboard/google/brya/variants/nereid/overridetree.cb | 6 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/variants/nereid/gpio.c b/src/mainboard/google/brya/variants/nereid/gpio.c index 0f68ecf3b7..f9ef8c9953 100644 --- a/src/mainboard/google/brya/variants/nereid/gpio.c +++ b/src/mainboard/google/brya/variants/nereid/gpio.c @@ -9,6 +9,10 @@ static const struct pad_config override_gpio_table[] = { /* A8 : WWAN_RF_DISABLE_ODL */ PAD_NC(GPP_A8, NONE), + /* A21 : GPP_A21 ==> USB_C1_AUX_DC_P */ + PAD_CFG_GPO(GPP_A21, 0, DEEP), + /* A22 : GPP_A22 ==> USB_C1_AUX_DC_N */ + PAD_CFG_GPO(GPP_A22, 1, DEEP), /* B5 : SOC_I2C_SUB_SDA */ PAD_NC(GPP_B5, NONE), diff --git a/src/mainboard/google/brya/variants/nereid/overridetree.cb b/src/mainboard/google/brya/variants/nereid/overridetree.cb index 50c98ceed7..806c74d768 100644 --- a/src/mainboard/google/brya/variants/nereid/overridetree.cb +++ b/src/mainboard/google/brya/variants/nereid/overridetree.cb @@ -9,8 +9,12 @@ end chip soc/intel/alderlake register "sagv" = "SaGv_Enabled" + # Bit 0 - C0 has no redriver, so enable SBU muxing in the SoC. + # Bit 2 - C1 has a redriver which does SBU muxing. + # Bit 1,3 - AUX lines are not swapped on the motherboard for either C0 or C1. + register "tcss_aux_ori" = "1" + register "typec_aux_bias_pads[0]" = "{.pad_auxp_dc = GPP_E22, .pad_auxn_dc = GPP_E23}" - register "typec_aux_bias_pads[1]" = "{.pad_auxp_dc = GPP_A21, .pad_auxn_dc = GPP_A22}" register "usb2_ports[6]" = "USB2_PORT_MID(OC_SKIP)" # WFC register "usb2_ports[7]" = "USB2_PORT_MID(OC_SKIP)" # Bluetooth port for PCIe WLAN |