From: Hawking Zhang <[email protected]> Required for proper powergating operation.
Signed-off-by: Hawking Zhang <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Reviewed-by: Huang Rui <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 45 +++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 04cd04c..5be4676 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -1903,6 +1903,44 @@ static void gfx_v9_0_init_gfx_power_gating(struct amdgpu_device *adev) } } +static void gfx_v9_0_enable_sck_slow_down_on_power_up(struct amdgpu_device *adev, + bool enable) +{ + uint32_t data = 0; + uint32_t default_data = 0; + + default_data = data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL)); + + if (enable == true) { + data |= RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PU_ENABLE_MASK; + if (default_data != data) + WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL), data); + } else { + data &= ~RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PU_ENABLE_MASK; + if(default_data != data) + WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL), data); + } +} + +static void gfx_v9_0_enable_sck_slow_down_on_power_down(struct amdgpu_device *adev, + bool enable) +{ + uint32_t data = 0; + uint32_t default_data = 0; + + default_data = data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL)); + + if (enable == true) { + data |= RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK; + if(default_data != data) + WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL), data); + } else { + data &= ~RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK; + if(default_data != data) + WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL), data); + } +} + static void gfx_v9_0_init_pg(struct amdgpu_device *adev) { if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG | @@ -1919,6 +1957,13 @@ static void gfx_v9_0_init_pg(struct amdgpu_device *adev) WREG32(mmRLC_JUMP_TABLE_RESTORE, adev->gfx.rlc.cp_table_gpu_addr >> 8); gfx_v9_0_init_gfx_power_gating(adev); + if (adev->pg_flags & AMD_PG_SUPPORT_RLC_SMU_HS) { + gfx_v9_0_enable_sck_slow_down_on_power_up(adev, true); + gfx_v9_0_enable_sck_slow_down_on_power_down(adev, true); + } else { + gfx_v9_0_enable_sck_slow_down_on_power_up(adev, false); + gfx_v9_0_enable_sck_slow_down_on_power_down(adev, false); + } } } } -- 2.5.5 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
