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| author | Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> | 2017-02-22 08:34:29 +0200 |
|---|---|---|
| committer | Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> | 2017-02-27 09:08:16 +0200 |
| commit | f4f4b59be52b28823642f82312e15369d783d858 (patch) | |
| tree | c7787b091d56106e4a5a88239201fb6e8a912564 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | 9a5da00b7ce0dec87fc0707c5cd17fed03e183cd (diff) | |
| download | op-kernel-dev-f4f4b59be52b28823642f82312e15369d783d858.zip op-kernel-dev-f4f4b59be52b28823642f82312e15369d783d858.tar.gz | |
drm/i915/glk: Implement WaDDIIOTimeout
Implement WaDDIIOTimeout to avoid a timeout when enabling the DDI IO
power domains.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170222063431.10060-5-ander.conselvan.de.oliveira@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 169c490..b38707e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -114,6 +114,16 @@ static void glk_init_clock_gating(struct drm_i915_private *dev_priv) */ I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) | PWM1_GATING_DIS | PWM2_GATING_DIS); + + /* WaDDIIOTimeout:glk */ + if (IS_GLK_REVID(dev_priv, 0, GLK_REVID_A1)) { + u32 val = I915_READ(CHICKEN_MISC_2); + val &= ~(GLK_CL0_PWR_DOWN | + GLK_CL1_PWR_DOWN | + GLK_CL2_PWR_DOWN); + I915_WRITE(CHICKEN_MISC_2, val); + } + } static void i915_pineview_get_mem_freq(struct drm_i915_private *dev_priv) |
