The initialization sequence for Meteorlake reuses the sequence for icelake for most parts. Some changes viz. reset PICA handshake are added. Bspec: 49189 Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_display_power.c | 3 +++ drivers/gpu/drm/i915/i915_reg.h | 3 ++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c index f7e8d1ff62cf..9c1fefb2da55 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power.c +++ b/drivers/gpu/drm/i915/display/intel_display_power.c @@ -1382,6 +1382,9 @@ static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv, reset_bits = RESET_PCH_HANDSHAKE_ENABLE; } + if (DISPLAY_VER(dev_priv) >= 14) + reset_bits |= MTL_RESET_PICA_HANDSHAKE_EN; + val = intel_de_read(dev_priv, reg); if (enable) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 15a53cb5e1ee..e2e9932fa484 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5821,7 +5821,8 @@ _BW_BUDDY1_PAGE_MASK)) #define HSW_NDE_RSTWRN_OPT _MMIO(0x46408) -#define RESET_PCH_HANDSHAKE_ENABLE (1 << 4) +#define MTL_RESET_PICA_HANDSHAKE_EN REG_BIT(6) +#define RESET_PCH_HANDSHAKE_ENABLE REG_BIT(4) #define GEN8_CHICKEN_DCPR_1 _MMIO(0x46430) #define SKL_SELECT_ALTERNATE_DC_EXIT REG_BIT(30) -- 2.25.1
