diff options
| author | Eric Lai <ericr_lai@compal.corp-partner.google.com> | 2020-12-15 14:51:50 +0800 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2020-12-18 19:55:12 +0000 |
| commit | dd32e653cfd1c0a387c76301625fce2a6d9abdd2 (patch) | |
| tree | b0113848cdbed68a3da60477f5c1db405d8eaa95 /src/soc/amd | |
| parent | 07462ef3d69e4458110bf27a1ecb1d4379929ff4 (diff) | |
soc/amd/picasso: Add acp_i2s_use_external_48mhz_osc flag
If we have use external clock source for I2S, we don't need to enable
internal one. Add acp_i2s_use_external_48mhz_osc flag for the project
which uses external clock source.
BUG=b:174121847
BRANCH=zork
TEST= build passed
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: Ica68ee2da5a05231eb6db0218bd0f19907507273
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48637
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/picasso/chip.h | 2 | ||||
| -rw-r--r-- | src/soc/amd/picasso/fch.c | 8 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/soc/amd/picasso/chip.h b/src/soc/amd/picasso/chip.h index c0a64576de..66ac98ded0 100644 --- a/src/soc/amd/picasso/chip.h +++ b/src/soc/amd/picasso/chip.h @@ -219,6 +219,8 @@ struct soc_amd_picasso_config { /* The array index is the general purpose PCIe clock output number. */ enum gpp_clk_req_setting gpp_clk_config[GPP_CLK_OUTPUT_COUNT]; + /* If using an external 48MHz OSC for codec, will disable internal X48M_OSC */ + bool acp_i2s_use_external_48mhz_osc; }; #endif /* __PICASSO_CHIP_H__ */ diff --git a/src/soc/amd/picasso/fch.c b/src/soc/amd/picasso/fch.c index cda509b0a5..0fe176b21a 100644 --- a/src/soc/amd/picasso/fch.c +++ b/src/soc/amd/picasso/fch.c @@ -89,9 +89,15 @@ const struct irq_idx_name *sb_get_apic_reg_association(size_t *size) void sb_clk_output_48Mhz(void) { u32 ctrl; + const struct soc_amd_picasso_config *cfg; + cfg = config_of_soc(); ctrl = misc_read32(MISC_CLK_CNTL1); - ctrl |= BP_X48M0_OUTPUT_EN; + /* If used external clock source for I2S, disable the internal clock output */ + if (cfg->acp_i2s_use_external_48mhz_osc && cfg->acp_pin_cfg == I2S_PINS_I2S_TDM) + ctrl &= ~BP_X48M0_OUTPUT_EN; + else + ctrl |= BP_X48M0_OUTPUT_EN; misc_write32(MISC_CLK_CNTL1, ctrl); } |