From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> The ATS faults have something to do with some new iommu stuff on mtl+. Document that the relevant DSB interrupt bits aren't valid for earlier platforms. Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_dsb_regs.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dsb_regs.h b/drivers/gpu/drm/i915/display/intel_dsb_regs.h index 210e2665441d..9c2664ff519a 100644 --- a/drivers/gpu/drm/i915/display/intel_dsb_regs.h +++ b/drivers/gpu/drm/i915/display/intel_dsb_regs.h @@ -51,12 +51,12 @@ #define DSB_RESET_SM_STATE_MASK REG_GENMASK(5, 4) #define DSB_RUN_SM_STATE_MASK REG_GENMASK(2, 0) #define DSB_INTERRUPT(pipe, id) _MMIO(DSBSL_INSTANCE(pipe, id) + 0x28) -#define DSB_ATS_FAULT_INT_EN REG_BIT(20) +#define DSB_ATS_FAULT_INT_EN REG_BIT(20) /* mtl+ */ #define DSB_GTT_FAULT_INT_EN REG_BIT(19) #define DSB_RSPTIMEOUT_INT_EN REG_BIT(18) #define DSB_POLL_ERR_INT_EN REG_BIT(17) #define DSB_PROG_INT_EN REG_BIT(16) -#define DSB_ATS_FAULT_INT_STATUS REG_BIT(4) +#define DSB_ATS_FAULT_INT_STATUS REG_BIT(4) /* mtl+ */ #define DSB_GTT_FAULT_INT_STATUS REG_BIT(3) #define DSB_RSPTIMEOUT_INT_STATUS REG_BIT(2) #define DSB_POLL_ERR_INT_STATUS REG_BIT(1) -- 2.44.2
