The PGTBL_CTL register provides the starting physical memory address of the Graphics Translation Table (GTT). We want to see what's the value in it. This patch is useful for debug. Signed-off-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx> --- drivers/gpu/drm/gma500/gtt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/gma500/gtt.c b/drivers/gpu/drm/gma500/gtt.c index 379bc218aa6b..112418301866 100644 --- a/drivers/gpu/drm/gma500/gtt.c +++ b/drivers/gpu/drm/gma500/gtt.c @@ -243,6 +243,8 @@ static void psb_gtt_init_ranges(struct drm_psb_private *dev_priv) gtt_mem = &pdev->resource[PSB_GATT_RESOURCE]; } + drm_info(dev, "Phys start of GTT: 0x%llx\n", (u64)gtt_phys_start); + pg->gtt_phys_start = gtt_phys_start; pg->mmu_gatt_start = mmu_gatt_start; pg->gtt_start = gtt_start; -- 2.34.1
