Quoting Ville Syrjala (2019-02-25 20:29:00)
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> The BXT DUNIT register tells us the size of each DRAM device
> in Gb. We want to report the size of the whole DIMM in GB, so
> that it matches how we report it for non-LP platforms.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 1f4a966a9727..c40a738dabd3 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -1322,7 +1322,14 @@ bxt_get_dram_info(struct drm_i915_private *dev_priv)
> width = bxt_get_dimm_width(val);
> ranks = bxt_get_dimm_ranks(val);
>
> - DRM_DEBUG_KMS("CH%d DIMM size: % dGB, width: X%d, ranks:%d\n",
> + /*
> + * Size in register is Gb per DRAM device.
> + * Convert to total GB to match the way
> + * we report this for non-LP platforms.
> + */
> + size = size * ranks * 8 / (width ?: 1);
Should it be /8 for Gbits to GBytes?
-Chris
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