drm/i915: Remove redundant/wrong comments

Remove the comment specifying the exact formulat for calculating
the DPLL frequency from the *_find_best_dpll() functions. Each
platform variant has its own way to calculate these and we have
the code already to do that. These comments are entirely redundant
and often even wrong so just get rid of them.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220307233940.4161-3-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 53184154bc5d61560de61ecc38df6713804edb83..c0c76ff8b59083adb96ef3443643e9392f0d4c5f 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -425,8 +425,7 @@ i9xx_select_p2_div(const struct intel_limit *limit,
 
 /*
  * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE.  The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ * refclk, or FALSE.
  *
  * Target and reference clocks are specified in kHz.
  *
@@ -484,8 +483,7 @@ i9xx_find_best_dpll(const struct intel_limit *limit,
 
 /*
  * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE.  The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ * refclk, or FALSE.
  *
  * Target and reference clocks are specified in kHz.
  *
@@ -541,8 +539,7 @@ pnv_find_best_dpll(const struct intel_limit *limit,
 
 /*
  * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE.  The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ * refclk, or FALSE.
  *
  * Target and reference clocks are specified in kHz.
  *
@@ -641,8 +638,7 @@ static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
 
 /*
  * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE.  The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ * refclk, or FALSE.
  */
 static bool
 vlv_find_best_dpll(const struct intel_limit *limit,
@@ -700,8 +696,7 @@ vlv_find_best_dpll(const struct intel_limit *limit,
 
 /*
  * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE.  The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ * refclk, or FALSE.
  */
 static bool
 chv_find_best_dpll(const struct intel_limit *limit,