For GEMINILAKE, dphy param reg values are programmed in terms of HS byte clock while for legacy platforms in terms of ddrclk Signed-off-by: Madhav Chauhan <madhav.chauhan@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 33 +++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c index 0d8ff00..647eca4 100644 --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c @@ -668,16 +668,26 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) /* count values in UI = (ns value) * (bitrate / (2 * 10^6)) * * Since txddrclkhs_i is 2xUI, all the count values programmed in - * DPHY param register are divided by 2 + * DPHY param register are divided by 2 except GEMINILAKE where it is + * programmed in terms of HS byte clock so divided by 8 * * prepare count */ ths_prepare_ns = max(mipi_config->ths_prepare, mipi_config->tclk_prepare); - prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * ui_den, ui_num * 2); + if (IS_GEMINILAKE(dev_priv)) + prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * ui_den, ui_num * 8); + else + prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * ui_den, ui_num * 2); /* exit zero count */ - exit_zero_cnt = DIV_ROUND_UP( + if (IS_GEMINILAKE(dev_priv)) + exit_zero_cnt = DIV_ROUND_UP( + (ths_prepare_hszero - ths_prepare_ns) * ui_den, + ui_num * 8 + ); + else + exit_zero_cnt = DIV_ROUND_UP( (ths_prepare_hszero - ths_prepare_ns) * ui_den, ui_num * 2 ); @@ -692,13 +702,22 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) exit_zero_cnt += 1; /* clk zero count */ - clk_zero_cnt = DIV_ROUND_UP( - (tclk_prepare_clkzero - ths_prepare_ns) - * ui_den, 2 * ui_num); + if (IS_GEMINILAKE(dev_priv)) + clk_zero_cnt = DIV_ROUND_UP( + (tclk_prepare_clkzero - ths_prepare_ns) + * ui_den, 8 * ui_num); + else + clk_zero_cnt = DIV_ROUND_UP( + (tclk_prepare_clkzero - ths_prepare_ns) + * ui_den, 2 * ui_num); /* trail count */ tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail); - trail_cnt = DIV_ROUND_UP(tclk_trail_ns * ui_den, 2 * ui_num); + + if (IS_GEMINILAKE(dev_priv)) + trail_cnt = DIV_ROUND_UP(tclk_trail_ns * ui_den, 8 * ui_num); + else + trail_cnt = DIV_ROUND_UP(tclk_trail_ns * ui_den, 2 * ui_num); if (prepare_cnt > PREPARE_CNT_MAX || exit_zero_cnt > EXIT_ZERO_CNT_MAX || -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
