[PATCH 24/33] drm/amd/display: Set phy_mux_sel bit in dmub scratch register

[Rodrigo Siqueira]

From: Hansen <Hansen.Dsouza at amd.com>

[Why]
B0 has pipe mux for DIGC and DIGD which can be connected to PHYF/PHYG or
PHYC/PHY D.

[How]
Based on chip internal hardware revision id determine it is B0 and set
DMUB scratch register so DMUBFW can connect the display pipe is
connected correctly to the dig.

Cc: Wayne Lin <wayne.lin at amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu at amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
Signed-off-by: Hansen <Hansen.Dsouza at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h       | 1 +
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h   | 4 ++--
 drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c | 2 ++
 drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c   | 1 +
 5 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index e56f73e299ef..8a8a5ace1040 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1792,7 +1792,7 @@ static int dm_dmub_sw_init(struct amdgpu_device *adev)
 		break;
 	case IP_VERSION(3, 1, 2):
 	case IP_VERSION(3, 1, 3):
-		dmub_asic = DMUB_ASIC_DCN31;
+		dmub_asic = (adev->external_rev_id == YELLOW_CARP_B0) ? DMUB_ASIC_DCN31B : DMUB_ASIC_DCN31;
 		fw_name_dmub = FIRMWARE_YELLOW_CARP_DMUB;
 		break;
 
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index 365fbc4758e1..6c4f0ada163f 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -97,6 +97,7 @@ enum dmub_asic {
 	DMUB_ASIC_DCN302,
 	DMUB_ASIC_DCN303,
 	DMUB_ASIC_DCN31,
+	DMUB_ASIC_DCN31B,
 	DMUB_ASIC_MAX,
 };
 
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index e0bbfd1b7a2d..7e22293e78f6 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -374,8 +374,8 @@ union dmub_fw_boot_options {
 		uint32_t reserved_unreleased2: 1; /**< reserved for an unreleased feature */
 		uint32_t root_clock_gating: 1; /**< 1 if all root clock gating is enabled */
 		uint32_t diag_env: 1; /* 1 if diagnostic environment */
-
-		uint32_t reserved : 19; /**< reserved */
+		uint32_t sel_mux_phy_c_d_phy_f_g: 1; /**< 1 if PHYF/PHYG should be enabled */
+		uint32_t reserved : 21; /**< reserved */
 	} bits; /**< boot bits */
 	uint32_t all; /**< 32-bit access to bits */
 };
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
index 3988f65f1ea4..5df990277dd4 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
@@ -340,6 +340,8 @@ void dmub_dcn31_enable_dmub_boot_options(struct dmub_srv *dmub, const struct dmu
 	boot_options.bits.z10_disable = params->disable_z10;
 	boot_options.bits.enable_dpia = params->disable_dpia ? 0 : 1;
 
+	boot_options.bits.sel_mux_phy_c_d_phy_f_g = (dmub->asic == DMUB_ASIC_DCN31B) ? 1 : 0;
+
 	REG_WRITE(DMCUB_SCRATCH14, boot_options.all);
 }
 
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index 77c67222cabd..56d400ffa7ac 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -208,6 +208,7 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
 		break;
 
 	case DMUB_ASIC_DCN31:
+	case DMUB_ASIC_DCN31B:
 		dmub->regs_dcn31 = &dmub_srv_dcn31_regs;
 		funcs->reset = dmub_dcn31_reset;
 		funcs->reset_release = dmub_dcn31_reset_release;
-- 
2.25.1