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drm/amd/display: Add debug option for disabling SLDO optimizations

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[Why]
DM can hook this up to disable SLDO optimizations in firmware during
DMCUB initialization for debug purposes.

[How]
Add the option and pass it through dmub_srv.

Reviewed-by: Hansen Dsouza <hansen.dsouza@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas
2024-06-17 15:45:51 -04:00
committed by Alex Deucher
parent fe4b8c98dd
commit ea04ef19eb
3 changed files with 4 additions and 1 deletions
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1
drivers/gpu/drm/amd/display/dmub/dmub_srv.h
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@@ -299,6 +299,7 @@ struct dmub_srv_hw_params {
enum dmub_memory_access_type mem_access_type;
enum dmub_ips_disable_type disable_ips;
bool disallow_phy_access;
bool disable_sldo_opt;
};
/**

3
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
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@@ -684,7 +684,8 @@ union dmub_fw_boot_options {
uint32_t ips_pg_disable: 1; /* 1 to disable ONO domains power gating*/
uint32_t ips_disable: 3; /* options to disable ips support*/
uint32_t ips_sequential_ono: 1; /**< 1 to enable sequential ONO IPS sequence */
uint32_t reserved : 8; /**< reserved */
uint32_t disable_sldo_opt: 1; /**< 1 to disable SLDO optimizations */
uint32_t reserved : 7; /**< reserved */
} bits; /**< boot bits */
uint32_t all; /**< 32-bit access to bits */
};

1
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
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@@ -424,6 +424,7 @@ void dmub_dcn35_enable_dmub_boot_options(struct dmub_srv *dmub, const struct dmu
boot_options.bits.disable_clk_gate = params->disable_clock_gate;
boot_options.bits.ips_disable = params->disable_ips;
boot_options.bits.ips_sequential_ono = params->ips_sequential_ono;
boot_options.bits.disable_sldo_opt = params->disable_sldo_opt;
REG_WRITE(DMCUB_SCRATCH14, boot_options.all);
}