Re: [PATCH 2/2] drm/i915/display: Remove uhbr13.5 pll state values

[Jani Nikula <jani.nikula@intel.com>]

On Thu, 09 May 2024, Arun R Murthy <arun.r.murthy@intel.com> wrote:
> uhbr13.5 is not supported on dg2/mtl. This patch removes the pll state
> table for synps and c20 PHY.
>
> Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_cx0_phy.c  | 26 --------------
>  drivers/gpu/drm/i915/display/intel_dp.c       |  2 --
>  drivers/gpu/drm/i915/display/intel_snps_phy.c | 35 -------------------
>  3 files changed, 63 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> index 8e3b13884bb8..fb07d14d9a7a 100644
> --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> @@ -885,31 +885,6 @@ static const struct intel_c20pll_state mtl_c20_dp_uhbr10 = {
>  		},
>  };
>  
> -static const struct intel_c20pll_state mtl_c20_dp_uhbr13_5 = {
> -	.clock = 1350000, /* 13.5 Gbps */
> -	.tx = {	0xbea0, /* tx cfg0 */
> -		0x4800, /* tx cfg1 */
> -		0x0000, /* tx cfg2 */
> -		},
> -	.cmn = {0x0500, /* cmn cfg0*/
> -		0x0005, /* cmn cfg1 */
> -		0x0000, /* cmn cfg2 */
> -		0x0000, /* cmn cfg3 */
> -		},
> -	.mpllb = { 0x015f,	/* mpllb cfg0 */
> -		0x2205,		/* mpllb cfg1 */
> -		0x1b17,		/* mpllb cfg2 */
> -		0xffc1,		/* mpllb cfg3 */
> -		0xe100,		/* mpllb cfg4 */
> -		0xbd00,		/* mpllb cfg5 */
> -		0x2000,		/* mpllb cfg6 */
> -		0x0001,		/* mpllb cfg7 */
> -		0x4800,		/* mpllb cfg8 */
> -		0x0000,		/* mpllb cfg9 */
> -		0x0000,		/* mpllb cfg10 */
> -		},
> -};
> -
>  static const struct intel_c20pll_state mtl_c20_dp_uhbr20 = {
>  	.clock = 2000000, /* 20 Gbps */
>  	.tx = {	0xbe20, /* tx cfg0 */
> @@ -940,7 +915,6 @@ static const struct intel_c20pll_state * const mtl_c20_dp_tables[] = {
>  	&mtl_c20_dp_hbr2,
>  	&mtl_c20_dp_hbr3,
>  	&mtl_c20_dp_uhbr10,
> -	&mtl_c20_dp_uhbr13_5,
>  	&mtl_c20_dp_uhbr20,
>  	NULL,
>  };
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 7098ca65701f..a9c17c6d8d77 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -247,8 +247,6 @@ static void intel_dp_set_dpcd_sink_rates(struct intel_dp *intel_dp)
>  
>  		if (uhbr_rates & DP_UHBR10)
>  			intel_dp->sink_rates[i++] = 1000000;
> -		if (uhbr_rates & DP_UHBR13_5)
> -			intel_dp->sink_rates[i++] = 1350000;

This is about the sink, not the source. We'll want to keep this.

BR,
Jani.


>  		if (uhbr_rates & DP_UHBR20)
>  			intel_dp->sink_rates[i++] = 2000000;
>  	}
> diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c
> index e6df1f92def5..6b1eda0d73d8 100644
> --- a/drivers/gpu/drm/i915/display/intel_snps_phy.c
> +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c
> @@ -213,47 +213,12 @@ static const struct intel_mpllb_state dg2_dp_uhbr10_100 = {
>  		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 76101),
>  };
>  
> -static const struct intel_mpllb_state dg2_dp_uhbr13_100 = {
> -	.clock = 1350000,
> -	.ref_control =
> -		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
> -	.mpllb_cp =
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 45) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
> -	.mpllb_div =
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 3),
> -	.mpllb_div2 =
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 508),
> -	.mpllb_fracn1 =
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
> -
> -	/*
> -	 * SSC will be enabled, DP UHBR has a minimum SSC requirement.
> -	 */
> -	.mpllb_sscen =
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 79626),
> -	.mpllb_sscstep =
> -		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 102737),
> -};
> -
>  static const struct intel_mpllb_state * const dg2_dp_100_tables[] = {
>  	&dg2_dp_rbr_100,
>  	&dg2_dp_hbr1_100,
>  	&dg2_dp_hbr2_100,
>  	&dg2_dp_hbr3_100,
>  	&dg2_dp_uhbr10_100,
> -	&dg2_dp_uhbr13_100,
>  	NULL,
>  };

-- 
Jani Nikula, Intel