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author | Chris Wang <chris.wang@amd.corp-partner.google.com> | 2018-11-05 12:09:24 +0800 |
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committer | Martin Roth <martinroth@google.com> | 2018-11-09 09:15:11 +0000 |
commit | 50c11607a1afaa373d381575c5056e4185a014c4 (patch) | |
tree | ea263284ba825dc9ee019655ecedaff0161d3c8d /src/soc/amd | |
parent | 2df5abc53bf670786a472c9c315adfc4e988cf2a (diff) | |
download | coreboot-50c11607a1afaa373d381575c5056e4185a014c4.tar.gz coreboot-50c11607a1afaa373d381575c5056e4185a014c4.tar.bz2 coreboot-50c11607a1afaa373d381575c5056e4185a014c4.zip |
mb/google/kahlee: Tune eDP panel initialization time
1. Add two parameters for panel initialization timing.
> lvds_poseq_varybl_to_blon
> lvds_poseq_blon_to_varybl
2. The BL_PWM is controlled by APU_EDP_BKLTEN_L/APU_DP_VARY_BL/
EDP_BKLTEN_L, so move APU_EDP_BKLTEN_L to early init stage,
and be enabled depends on SKU, thus we can control the delay
time by config APU_DP_VARY_BL.
BUG=b:118011567
TEST=emerge-grunt coreboot.
Change-Id: Ib20c48813b208d697b950b2f02a70a690e483fdb
Signed-off-by: Chris Wang <chris.wang@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/29469
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/amd')
-rw-r--r-- | src/soc/amd/stoneyridge/chip.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/chip.h b/src/soc/amd/stoneyridge/chip.h index 320bef0bdfa5..92223d196265 100644 --- a/src/soc/amd/stoneyridge/chip.h +++ b/src/soc/amd/stoneyridge/chip.h @@ -63,6 +63,15 @@ struct soc_amd_stoneyridge_config { u8 stapm_percent; u32 stapm_time_ms; u32 stapm_power_mw; + /* + * This specifies the LVDS/eDP power-up sequence time for the delay + * between VaryBL and BLON. + * 0 - Use the VBIOS default (default). The video BIOS default is 32ms. + * n - Values other than zero specify a setting of (4 * n) milliseconds + * time delay. + */ + u8 lvds_poseq_varybl_to_blon; + u8 lvds_poseq_blon_to_varybl; }; typedef struct soc_amd_stoneyridge_config config_t; |