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drm/i915/dram: Populate PNV memory type accurately

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If PNV doesn't have DDR3 then it has DDR2. Add the appropriate memory
type for it.

No functional change since we currently only care about the
DDR3 vs. not difference.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250902133113.18778-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2025-09-02 16:31:06 +03:00
parent 8d87f08ba0
commit 3a64c19963
2 changed files with 7 additions and 4 deletions
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10
drivers/gpu/drm/i915/soc/intel_dram.c
View File

@ -35,6 +35,7 @@ static const char *intel_dram_type_str(enum intel_dram_type type)
{
static const char * const str[] = {
DRAM_TYPE_STR(UNKNOWN),
DRAM_TYPE_STR(DDR2),
DRAM_TYPE_STR(DDR3),
DRAM_TYPE_STR(DDR4),
DRAM_TYPE_STR(LPDDR3),
@ -55,9 +56,10 @@ static const char *intel_dram_type_str(enum intel_dram_type type)
#undef DRAM_TYPE_STR
static bool pnv_is_ddr3(struct drm_i915_private *i915)
static enum intel_dram_type pnv_dram_type(struct drm_i915_private *i915)
{
return intel_uncore_read(&i915->uncore, CSHRDDR3CTL) & CSHRDDR3CTL_DDR3;
return intel_uncore_read(&i915->uncore, CSHRDDR3CTL) & CSHRDDR3CTL_DDR3 ?
INTEL_DRAM_DDR3 : INTEL_DRAM_DDR2;
}
static unsigned int pnv_mem_freq(struct drm_i915_private *dev_priv)
@ -252,8 +254,8 @@ static int i915_get_dram_info(struct drm_i915_private *i915, struct dram_info *d
if (dram_info->mem_freq)
drm_dbg(&i915->drm, "DDR speed: %d kHz\n", dram_info->mem_freq);
if (IS_PINEVIEW(i915) && pnv_is_ddr3(i915))
dram_info->type = INTEL_DRAM_DDR3;
if (IS_PINEVIEW(i915))
dram_info->type = pnv_dram_type(i915);
return 0;
}

1
drivers/gpu/drm/i915/soc/intel_dram.h
View File

@ -17,6 +17,7 @@ struct dram_info {
bool symmetric_memory;
enum intel_dram_type {
INTEL_DRAM_UNKNOWN,
INTEL_DRAM_DDR2,
INTEL_DRAM_DDR3,
INTEL_DRAM_DDR4,
INTEL_DRAM_LPDDR3,