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drm/amdgpu: Disable TCP Early Write Ack for GFX 12.1

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Disable the TCP Early Write Ack feature on GFX 12.1.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mukul Joshi 2025-09-05 22:22:32 -04:00 committed by Alex Deucher
parent e418a8fdb9
commit fab4099549
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/drm/amd/amdgpu/gfx_v12_1.c
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@ -2657,6 +2657,17 @@ static void gfx_v12_1_xcc_disable_burst(struct amdgpu_device *adev,
WREG32_SOC15(GC, GET_INST(GC, xcc_id), regGLARB_DRAM_BURST_CTRL, 0xf);
}
static void gfx_v12_1_xcc_disable_early_write_ack(struct amdgpu_device *adev,
int xcc_id)
{
uint32_t data;
data = RREG32_SOC15(GC, GET_INST(GC, xcc_id), regTCP_CNTL3);
data = REG_SET_FIELD(data, TCP_CNTL3, DISABLE_EARLY_WRITE_ACK, 0x1);
WREG32_SOC15(GC, GET_INST(GC, xcc_id), regTCP_CNTL3, data);
}
static void gfx_v12_1_init_golden_registers(struct amdgpu_device *adev)
{
int i;
@ -2665,6 +2676,7 @@ static void gfx_v12_1_init_golden_registers(struct amdgpu_device *adev)
gfx_v12_1_xcc_disable_burst(adev, i);
gfx_v12_1_xcc_enable_atomics(adev, i);
gfx_v12_1_xcc_setup_tcp_thrashing_ctrl(adev, i);
gfx_v12_1_xcc_disable_early_write_ack(adev, i);
}
}