Note that DG2 only has a single possible refclk frequency (38.4 MHz).
Bspec: 54034 Cc: Lucas De Marchi lucas.demarchi@intel.com Signed-off-by: Anusha Srivatsa anusha.srivatsa@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com --- drivers/gpu/drm/i915/display/intel_cdclk.c | 24 ++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index 613ffcc68eba..08f34d87684f 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -1290,6 +1290,18 @@ static const struct intel_cdclk_vals adlp_cdclk_table[] = { {} };
+static const struct intel_cdclk_vals dg2_cdclk_table[] = { + { .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio = 9 }, + { .refclk = 38400, .cdclk = 179200, .divider = 3, .ratio = 14 }, + { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 }, + { .refclk = 38400, .cdclk = 192000, .divider = 3, .ratio = 15 }, + { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 }, + { .refclk = 38400, .cdclk = 326400, .divider = 4, .ratio = 34 }, + { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 }, + { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 }, + {} +}; + static int bxt_calc_cdclk(struct drm_i915_private *dev_priv, int min_cdclk) { const struct intel_cdclk_vals *table = dev_priv->cdclk.table; @@ -1408,7 +1420,9 @@ static void bxt_de_pll_readout(struct drm_i915_private *dev_priv, { u32 val, ratio;
- if (DISPLAY_VER(dev_priv) >= 11) + if (IS_DG2(dev_priv)) + cdclk_config->ref = 38400; + else if (DISPLAY_VER(dev_priv) >= 11) icl_readout_refclk(dev_priv, cdclk_config); else if (IS_CANNONLAKE(dev_priv)) cnl_readout_refclk(dev_priv, cdclk_config); @@ -2878,7 +2892,13 @@ u32 intel_read_rawclk(struct drm_i915_private *dev_priv) */ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv) { - if (IS_ALDERLAKE_P(dev_priv)) { + if (IS_DG2(dev_priv)) { + dev_priv->display.set_cdclk = bxt_set_cdclk; + 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 = dg2_cdclk_table; + } else if (IS_ALDERLAKE_P(dev_priv)) { dev_priv->display.set_cdclk = bxt_set_cdclk; dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk; dev_priv->display.modeset_calc_cdclk = bxt_modeset_calc_cdclk;