Commit 6509dd11 authored by Radhakrishna Sripada's avatar Radhakrishna Sripada
Browse files

drm/i915: Skip Bit12 fw domain reset for gen12+ 



Bit12 of the Forcewake request register should not be cleared post
gen12. Do not touch this bit while clearing during fw domain reset.

v2: Tweak the comment to drop older platforms(MattR)

Bspec: 52542

Signed-off-by: default avatarSushma Venkatesh Reddy <sushma.venkatesh.reddy@intel.com>
Signed-off-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220817224304.255767-1-radhakrishna.sripada@intel.com
parent 95ccf312

drivers/gpu/drm/i915/intel_uncore.c

+5 −2
Original line number Diff line number Diff line
@@ -112,7 +112,10 @@ fw_domain_reset(const struct intel_uncore_forcewake_domain *d) 
	 * trying to reset here does exist at this point (engines could be fused

	 * off in ICL+), so no waiting for acks

	 */

	/* WaRsClearFWBitsAtReset:bdw,skl */

	/* WaRsClearFWBitsAtReset */

	if (GRAPHICS_VER(d->uncore->i915) >= 12)

		fw_clear(d, 0xefff);

	else

		fw_clear(d, 0xffff);

}