From: Imre Deak Date: Wed, 10 May 2017 09:21:47 +0000 (+0300) Subject: drm/i915/vlv: Fix port B PLL opamp initialization X-Git-Tag: v4.13-rc1~73^2~28^2~115 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ed58570f55e2c57553161413881c7947f0952b5c;p=linux.git drm/i915/vlv: Fix port B PLL opamp initialization The current code looks like a typo, the specification calls for setting bits 31:24 to 0x8C, while preserving bits 23:0. Fix things accordingly. I'm not aware of the typo causing a real problem, so the fix is only for consistency. Cc: Ville Syrjälä Signed-off-by: Imre Deak Reviewed-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1494408113-379-1-git-send-email-imre.deak@intel.com --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 85b9e2f521a0..19a7a1e183cb 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6369,8 +6369,8 @@ static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val); reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13); - reg_val &= 0x8cffffff; - reg_val = 0x8c000000; + reg_val &= 0x00ffffff; + reg_val |= 0x8c000000; vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val); reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));