From: José Roberto de Souza <jose.souza@xxxxxxxxx>
Implementation details are in the HSD 22011320316, requiring CD clock
to be at least 307MHz to make DC states to work.
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_cdclk.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index c9f1484f3811..4656a6edc3be 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -1253,6 +1253,21 @@ static const struct intel_cdclk_vals rkl_cdclk_table[] = {
{}
};
+static const struct intel_cdclk_vals adlp_a_step_cdclk_table[] = {
+ { .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
+ { .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
+ { .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
+
+ { .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
+ { .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
+ { .refclk = 24400, .cdclk = 648000, .divider = 2, .ratio = 54 },
+
+ { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
+ { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
+ { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
+ {}
+};
+
static const struct intel_cdclk_vals adlp_cdclk_table[] = {
{ .refclk = 19200, .cdclk = 172800, .divider = 3, .ratio = 27 },
{ .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
@@ -2801,7 +2816,11 @@ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk;
dev_priv->display.modeset_calc_cdclk = bxt_modeset_calc_cdclk;
dev_priv->display.calc_voltage_level = tgl_calc_voltage_level;
- dev_priv->cdclk.table = adlp_cdclk_table;
+ /* Wa_22011320316:adlp[a0] */
+ if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_A0))
+ dev_priv->cdclk.table = adlp_a_step_cdclk_table;
+ else
+ dev_priv->cdclk.table = adlp_cdclk_table;
} else if (IS_ROCKETLAKE(dev_priv)) {
dev_priv->display.set_cdclk = bxt_set_cdclk;
dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk;
--
2.25.4
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