From f657a6a3ba4c20bc01f5be3752d53498ee1bfe35 Mon Sep 17 00:00:00 2001 From: Balasubramani Vivekanandan Date: Fri, 22 May 2026 22:05:32 +0530 Subject: [PATCH] drm/xe: Restore IDLEDLY regiter on engine reset Wa_16023105232 programs the register IDLEDLY. The register is reset whenever the engine is reset. Therefore it should be added to the GuC save-restore register list for it to be restored after reset. Fixes: 7c53ff050ba8 ("drm/xe: Apply Wa_16023105232") Reviewed-by: Matt Roper Link: https://patch.msgid.link/20260522163531.1365540-2-balasubramani.vivekanandan@intel.com Signed-off-by: Balasubramani Vivekanandan (cherry picked from commit df1cfe24743a93b71eab27687e148ab8ae9b69e3) Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/xe/xe_guc_ads.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_guc_ads.c b/drivers/gpu/drm/xe/xe_guc_ads.c index 2b835d48b565..5760251cb685 100644 --- a/drivers/gpu/drm/xe/xe_guc_ads.c +++ b/drivers/gpu/drm/xe/xe_guc_ads.c @@ -767,6 +767,11 @@ static unsigned int guc_mmio_regset_write(struct xe_guc_ads *ads, } } + if (XE_GT_WA(hwe->gt, 16023105232)) + guc_mmio_regset_write_one(ads, regset_map, + RING_IDLEDLY(hwe->mmio_base), + count++); + return count; }