Quoting Matt Atwood (2024-10-18 17:03:06-03:00) >From: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx> > >Xe3_LPD has new max cdclk of 691200 which requires reusing the lnl table >and modify/add higher frequencies. Updating the max cdclk supported by >the platform and voltage_level determination is also updated. > >There are minor changes in cdclk programming sequence compared to lnl, >where programming cd2x divider needs to be skipped. This is already handled >by the calculations in existing code. > >v2: update tables >v3: xe3lpd doesnt supply the power control unit the voltage index > >Bspec: 68861, 68863, 68864 >Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx> >Signed-off-by: Matt Atwood <matthew.s.atwood@xxxxxxxxx> >Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> Re-adding my r-b[1] here: Reviewed-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx> [1] https://lore.kernel.org/all/172909183684.4147.5683276375084691858@gjsousa-mobl2/ >--- > drivers/gpu/drm/i915/display/intel_cdclk.c | 59 +++++++++++++++++++++- > 1 file changed, 57 insertions(+), 2 deletions(-) > >diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c >index fa1c2012b10c..96523526a2c3 100644 >--- a/drivers/gpu/drm/i915/display/intel_cdclk.c >+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c >@@ -1468,6 +1468,39 @@ static const struct intel_cdclk_vals xe2hpd_cdclk_table[] = { > {} > }; > >+static const struct intel_cdclk_vals xe3lpd_cdclk_table[] = { >+ { .refclk = 38400, .cdclk = 153600, .ratio = 16, .waveform = 0xaaaa }, >+ { .refclk = 38400, .cdclk = 172800, .ratio = 16, .waveform = 0xad5a }, >+ { .refclk = 38400, .cdclk = 192000, .ratio = 16, .waveform = 0xb6b6 }, >+ { .refclk = 38400, .cdclk = 211200, .ratio = 16, .waveform = 0xdbb6 }, >+ { .refclk = 38400, .cdclk = 230400, .ratio = 16, .waveform = 0xeeee }, >+ { .refclk = 38400, .cdclk = 249600, .ratio = 16, .waveform = 0xf7de }, >+ { .refclk = 38400, .cdclk = 268800, .ratio = 16, .waveform = 0xfefe }, >+ { .refclk = 38400, .cdclk = 288000, .ratio = 16, .waveform = 0xfffe }, >+ { .refclk = 38400, .cdclk = 307200, .ratio = 16, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 326400, .ratio = 17, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 345600, .ratio = 18, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 364800, .ratio = 19, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 384000, .ratio = 20, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 403200, .ratio = 21, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 422400, .ratio = 22, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 441600, .ratio = 23, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 460800, .ratio = 24, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 480000, .ratio = 25, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 499200, .ratio = 26, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 518400, .ratio = 27, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 537600, .ratio = 28, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 556800, .ratio = 29, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 576000, .ratio = 30, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 595200, .ratio = 31, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 614400, .ratio = 32, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 633600, .ratio = 33, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 652800, .ratio = 34, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 672000, .ratio = 35, .waveform = 0xffff }, >+ { .refclk = 38400, .cdclk = 691200, .ratio = 36, .waveform = 0xffff }, >+ {} >+}; >+ > static const int cdclk_squash_len = 16; > > static int cdclk_squash_divider(u16 waveform) >@@ -1594,6 +1627,16 @@ static u8 rplu_calc_voltage_level(int cdclk) > rplu_voltage_level_max_cdclk); > } > >+static u8 xe3lpd_calc_voltage_level(int cdclk) >+{ >+ /* >+ * Starting with xe3lpd power controller does not need the voltage >+ * index when doing the modeset update. This function is best left >+ * defined but returning 0 to the mask. >+ */ >+ return 0; >+} >+ > static void icl_readout_refclk(struct intel_display *display, > struct intel_cdclk_config *cdclk_config) > { >@@ -3437,7 +3480,9 @@ void intel_update_max_cdclk(struct intel_display *display) > { > struct drm_i915_private *dev_priv = to_i915(display->drm); > >- if (IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv)) { >+ if (DISPLAY_VER(display) >= 30) { >+ display->cdclk.max_cdclk_freq = 691200; >+ } else if (IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv)) { > if (display->cdclk.hw.ref == 24000) > display->cdclk.max_cdclk_freq = 552000; > else >@@ -3650,6 +3695,13 @@ void intel_cdclk_debugfs_register(struct intel_display *display) > display, &i915_cdclk_info_fops); > } > >+static const struct intel_cdclk_funcs xe3lpd_cdclk_funcs = { >+ .get_cdclk = bxt_get_cdclk, >+ .set_cdclk = bxt_set_cdclk, >+ .modeset_calc_cdclk = bxt_modeset_calc_cdclk, >+ .calc_voltage_level = xe3lpd_calc_voltage_level, >+}; >+ > static const struct intel_cdclk_funcs rplu_cdclk_funcs = { > .get_cdclk = bxt_get_cdclk, > .set_cdclk = bxt_set_cdclk, >@@ -3794,7 +3846,10 @@ void intel_init_cdclk_hooks(struct intel_display *display) > { > struct drm_i915_private *dev_priv = to_i915(display->drm); > >- if (DISPLAY_VER(display) >= 20) { >+ if (DISPLAY_VER(display) >= 30) { >+ display->funcs.cdclk = &xe3lpd_cdclk_funcs; >+ display->cdclk.table = xe3lpd_cdclk_table; >+ } else if (DISPLAY_VER(display) >= 20) { > display->funcs.cdclk = &rplu_cdclk_funcs; > display->cdclk.table = xe2lpd_cdclk_table; > } else if (DISPLAY_VER_FULL(display) >= IP_VER(14, 1)) { >-- >2.45.0 >
