[Intel-gfx] [PATCH] drm/i915: Update bw_buddy pagemask table

[Matt Roper]

A recent bspec update removed the LPDDR4 single channel entry from the
buddy register table, but added a new four-channel entry.

Workaround 1409767108 hasn't been updated with any guidance for four
channel configurations, so we leave that alternate table unchanged for
now.

Bspec 49218
Fixes: 3fa01d642fa7 ("drm/i915/tgl: Program BW_BUDDY registers during display init")
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_power.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 24a2aa1fdc9c..a592a7dd71a3 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -5240,10 +5240,10 @@ struct buddy_page_mask {
 };
 
 static const struct buddy_page_mask tgl_buddy_page_masks[] = {
-	{ .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0xE },
 	{ .num_channels = 1, .type = INTEL_DRAM_DDR4,   .page_mask = 0xF },
 	{ .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1C },
 	{ .num_channels = 2, .type = INTEL_DRAM_DDR4,   .page_mask = 0x1F },
+	{ .num_channels = 4, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x38 },
 	{}
 };
 
-- 
2.24.1