From: Manasi Navare Date: Fri, 23 Mar 2018 17:24:16 +0000 (-0700) Subject: drm/i915/icl: Add Voltage swing table for MG PHY DDI Buffer X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cd96bea7ba90c45c8d1d315433c78021e56ec8c7;p=linux.git drm/i915/icl: Add Voltage swing table for MG PHY DDI Buffer This table is used for voltage swing programming sequence during DDI Buffer initialization for MG PHY DDI Buffers on Icelake. v2 (from Paulo): * Fix white space issues. Cc: Rodrigo Vivi Cc: Jani Nikula Reviewed-by: Paulo Zanoni Signed-off-by: Manasi Navare Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180323172419.24911-5-paulo.r.zanoni@intel.com --- diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 229b9d5250c46..359acbfec4b16 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -592,6 +592,26 @@ static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_e { 0x0, 0x00, 0x00 }, /* 350 0.0 */ }; +struct icl_mg_phy_ddi_buf_trans { + u32 cri_txdeemph_override_5_0; + u32 cri_txdeemph_override_11_6; + u32 cri_txdeemph_override_17_12; +}; + +static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations[] = { + /* Voltage swing pre-emphasis */ + { 0x0, 0x1B, 0x00 }, /* 0 0 */ + { 0x0, 0x23, 0x08 }, /* 0 1 */ + { 0x0, 0x2D, 0x12 }, /* 0 2 */ + { 0x0, 0x00, 0x00 }, /* 0 3 */ + { 0x0, 0x23, 0x00 }, /* 1 0 */ + { 0x0, 0x2B, 0x09 }, /* 1 1 */ + { 0x0, 0x2E, 0x11 }, /* 1 2 */ + { 0x0, 0x2F, 0x00 }, /* 2 0 */ + { 0x0, 0x33, 0x0C }, /* 2 1 */ + { 0x0, 0x00, 0x00 }, /* 3 0 */ +}; + static const struct ddi_buf_trans * bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) {