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drm/i915/dsi: Drop bogus MIPI_SEQ_ASSERT_RESET before POWER_ON 

intel_dsi_post_disable(), which does the MIPI_SEQ_ASSERT_RESET,
will always be called at some point before intel_dsi_pre_enable()
making the MIPI_SEQ_ASSERT_RESET in intel_dsi_pre_enable() redundant.

In addition, calling MIPI_SEQ_ASSERT_RESET in the enable path goes
against the VBT spec.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1488374106-4949-3-git-send-email-jani.nikula@intel.com
This commit is contained in:
Hans de Goede 2017-03-01 15:14:58 +02:00 committed by Jani Nikula
parent 249f696235
commit 19c17df3cb
1 changed files with 0 additions and 1 deletions
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1
drivers/gpu/drm/i915/intel_dsi.c
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@ -811,7 +811,6 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder,
/* put device in ready state */
intel_dsi_device_ready(encoder);
intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);