On 08/27, Jani Nikula wrote: > On Mon, 26 Aug 2019, "Siqueira, Rodrigo" <Rodrigo.Siqueira@xxxxxxx> wrote: > > DP 1.4a specification defines Link Training Tunable PHY Repeater (LTTPR) > > which is required to add support for systems with Thunderbolt or other > > repeater devices. > > > > Changes since V1: > > - Adjusts registers names to be aligned with spec and the rest of the > > file > > - Update spec comment from 1.4 to 1.4a > > > > Cc: Abdoulaye Berthe <Abdoulaye.Berthe@xxxxxxx> > > Cc: Harry Wentland <harry.wentland@xxxxxxx> > > Cc: Leo Li <sunpeng.li@xxxxxxx> > > Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> > > Signed-off-by: Abdoulaye Berthe <Abdoulaye.Berthe@xxxxxxx> > > --- > > include/drm/drm_dp_helper.h | 25 +++++++++++++++++++++++++ > > 1 file changed, 25 insertions(+) > > > > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h > > index 8364502f92cf..e8beb4e7e5da 100644 > > --- a/include/drm/drm_dp_helper.h > > +++ b/include/drm/drm_dp_helper.h > > @@ -134,6 +134,31 @@ > > #define DP_SUPPORTED_LINK_RATES 0x010 /* eDP 1.4 */ > > # define DP_MAX_SUPPORTED_RATES 8 /* 16-bit little-endian */ > > > > +/** Link Training (LT)-tunable Physical Repeaters - DP 1.4a **/ > > This is not a kernel-doc comment, so please drop the double ** and use > regular comments. > > All the DPCD register definitions are ordered according to register > offset. Why add 0xf0000 and friends between 0x10 and 0x20...? Hi Jani, Thank you for the feedback. I already sent a V3 patch based on your comments; please let me know if you have any other suggestion. Best Regards > BR, > Jani. > > > +#define DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV 0xf0000 > > +#define DP_MAX_LINK_RATE_PHY_REPEATER 0xf0001 > > +#define DP_PHY_REPEATER_CNT 0xf0002 > > +#define DP_PHY_REPEATER_MODE 0xf0003 > > +#define DP_MAX_LANE_COUNT_PHY_REPEATER 0xf0004 > > +#define DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT 0xf0005 > > +#define DP_TRAINING_PATTERN_SET_PHY_REPEATER1 0xf0010 > > +#define DP_TRAINING_LANE0_SET_PHY_REPEATER1 0xf0011 > > +#define DP_TRAINING_LANE1_SET_PHY_REPEATER1 0xf0012 > > +#define DP_TRAINING_LANE2_SET_PHY_REPEATER1 0xf0013 > > +#define DP_TRAINING_LANE3_SET_PHY_REPEATER1 0xf0014 > > +#define DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 0xf0020 > > +#define DP_TRANSMITTER_CAPABILITY_PHY_REPEATER1 0xf0021 > > +#define DP_LANE0_1_STATUS_PHY_REPEATER1 0xf0030 > > +#define DP_LANE2_3_STATUS_PHY_REPEATER1 0xf0031 > > +#define DP_LANE_ALIGN_STATUS_UPDATED_PHY_REPEATER1 0xf0032 > > +#define DP_ADJUST_REQUEST_LANE0_1_PHY_REPEATER1 0xf0033 > > +#define DP_ADJUST_REQUEST_LANE2_3_PHY_REPEATER1 0xf0034 > > +#define DP_SYMBOL_ERROR_COUNT_LANE0_PHY_REPEATER1 0xf0035 > > +#define DP_SYMBOL_ERROR_COUNT_LANE1_PHY_REPEATER1 0xf0037 > > +#define DP_SYMBOL_ERROR_COUNT_LANE2_PHY_REPEATER1 0xf0039 > > +#define DP_SYMBOL_ERROR_COUNT_LANE3_PHY_REPEATER1 0xf003b > > +#define DP_FEC_STATUS_PHY_REPEATER1 0xf0290 > > + > > /* Multiple stream transport */ > > #define DP_FAUX_CAP 0x020 /* 1.2 */ > > # define DP_FAUX_CAP_1 (1 << 0) > > -- > Jani Nikula, Intel Open Source Graphics Center -- Rodrigo Siqueira Software Engineer, Advanced Micro Devices (AMD) https://siqueira.tech
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