[Intel-gfx] [PATCH 10/11] drm/i915: Populate bxt/glk DPLL clock limits a bit more

Ville Syrjala ville.syrjala at linux.intel.com
Tue Mar 1 17:31:27 UTC 2022


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Set the bxt/glk DPLL min dotclock to 25MHz (HDMI minimum)
and the max to 594 MHz (HDMI max). The supported DP frequencies
(162MHz-540MHz) fit within the same range.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dpll.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 693e07a6db80..fee3e2e3a4b7 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -284,8 +284,7 @@ static const struct intel_limit intel_limits_chv = {
 };
 
 static const struct intel_limit intel_limits_bxt = {
-	/* FIXME: find real dot limits */
-	.dot = { .min = 0, .max = INT_MAX },
+	.dot = { .min = 25000, .max = 594000 },
 	.vco = { .min = 4800000, .max = 6700000 },
 	.n = { .min = 1, .max = 1 },
 	.m1 = { .min = 2, .max = 2 },
-- 
2.34.1



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