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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-06-17 17:59:52 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-06-17 17:59:52 +0200 |
| commit | d01107902d6fd5eb21a4136a343b531b63e563d6 (patch) | |
| tree | 197795441706bcc8d6e27ca324951745a21cf67c /drivers/gpu/drm/i915/intel_pm.c | |
| parent | 3ca407c4f1edfcdf8cdba81bd82b1ab2e9b406a7 (diff) | |
| parent | 5c7513c4866175f5057fbe1d039e53e00a2dba53 (diff) | |
Merge remote-tracking branch 'fslc/4.1-2.0.x-imx' into toradex_4.1-2.0.x-imx-next
Conflicts:
arch/arm/boot/dts/imx7d.dtsi
arch/arm/mach-imx/busfreq-imx.c
arch/arm/mach-imx/imx_rpmsg.c
drivers/mmc/host/sdhci-esdhc-imx.c
Parts moved to:
arch/arm/boot/dts/imx7s.dtsi
Note: This also includes NXP's latest rel_imx_4.1.15_2.1.0_ga.
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 52c703be7882..ac9e7184ff1b 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6287,7 +6287,18 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv) { - I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); + u32 val; + + /* + * On driver load, a pipe may be active and driving a DSI display. + * Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck + * (and never recovering) in this case. intel_dsi_post_disable() will + * clear it when we turn off the display. + */ + val = I915_READ(DSPCLK_GATE_D); + val &= DPOUNIT_CLOCK_GATE_DISABLE; + val |= VRHUNIT_CLOCK_GATE_DISABLE; + I915_WRITE(DSPCLK_GATE_D, val); /* * Disable trickle feed and enable pnd deadline calculation |