[PATCH v2 06/25] drm/i915/xe2hpd: Initial cdclk table

[Matt Roper]

On Wed, Apr 03, 2024 at 04:52:34PM +0530, Balasubramani Vivekanandan wrote:
> From: Clint Taylor <clinton.a.taylor at intel.com>
> 
> Add Xe2_HPD specific CDCLK table and use MTL Funcs.
> 
> Bspec: 65243
> Cc: Matt Roper <matthew.d.roper at intel.com>
> CC: Lucas De Marchi <lucas.demarchi at intel.com>
> Signed-off-by: Clint Taylor <clinton.a.taylor at intel.com>
> Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan at intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_cdclk.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
> index 31aaa9780dfc..da16c308670f 100644
> --- a/drivers/gpu/drm/i915/display/intel_cdclk.c
> +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
> @@ -1444,6 +1444,14 @@ static const struct intel_cdclk_vals xe2lpd_cdclk_table[] = {
>  	{}
>  };
>  
> +/*
> + * Xe2_HPD always uses the minimal cdclk table from Wa_15015413771
> + */
> +static const struct intel_cdclk_vals xe2hpd_cdclk_table[] = {
> +	{ .refclk = 38400, .cdclk = 652800, .ratio = 34, .waveform = 0xffff },
> +	{}
> +};
> +
>  static const int cdclk_squash_len = 16;
>  
>  static int cdclk_squash_divider(u16 waveform)
> @@ -3768,6 +3776,9 @@ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
>  	if (DISPLAY_VER(dev_priv) >= 20) {
>  		dev_priv->display.funcs.cdclk = &rplu_cdclk_funcs;
>  		dev_priv->display.cdclk.table = xe2lpd_cdclk_table;
> +	} else if (DISPLAY_VER_FULL(dev_priv) >= IP_VER(14, 1)) {
> +		dev_priv->display.funcs.cdclk = &rplu_cdclk_funcs;
> +		dev_priv->display.cdclk.table = xe2hpd_cdclk_table;
>  	} else if (DISPLAY_VER(dev_priv) >= 14) {
>  		dev_priv->display.funcs.cdclk = &rplu_cdclk_funcs;
>  		dev_priv->display.cdclk.table = mtl_cdclk_table;
> -- 
> 2.25.1
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation