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-rw-r--r--drivers/gpu/drm/i915/i915_reg.h2
-rw-r--r--drivers/gpu/drm/i915/intel_dsi.c6
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0845059b6a3b..f7b822a86915 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8151,6 +8151,8 @@ enum skl_disp_power_wells {
#define _MIPIA_EOT_DISABLE (dev_priv->mipi_mmio_base + 0xb05c)
#define _MIPIC_EOT_DISABLE (dev_priv->mipi_mmio_base + 0xb85c)
#define MIPI_EOT_DISABLE(port) _MMIO_MIPI(port, _MIPIA_EOT_DISABLE, _MIPIC_EOT_DISABLE)
+#define BXT_DEFEATURE_DPI_FIFO_CTR (1 << 9)
+#define BXT_DPHY_DEFEATURE_EN (1 << 8)
#define LP_RX_TIMEOUT_ERROR_RECOVERY_DISABLE (1 << 7)
#define HS_RX_TIMEOUT_ERROR_RECOVERY_DISABLE (1 << 6)
#define LOW_CONTENTION_RECOVERY_DISABLE (1 << 5)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index c70132aa91d5..0f86da048a63 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -1172,6 +1172,12 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder)
if (intel_dsi->clock_stop)
tmp |= CLOCKSTOP;
+ if (IS_BROXTON(dev_priv)) {
+ tmp |= BXT_DPHY_DEFEATURE_EN;
+ if (!is_cmd_mode(intel_dsi))
+ tmp |= BXT_DEFEATURE_DPI_FIFO_CTR;
+ }
+
for_each_dsi_port(port, intel_dsi->ports) {
I915_WRITE(MIPI_DSI_FUNC_PRG(port), val);