[Intel-gfx] [PATCH 1/1] drm/i915/tgl: Implement Wa_1604555607

[Lucas De Marchi]

On Thu, Nov 21, 2019 at 04:42:31PM +0530, Ramalingam C wrote:
>+	/* Wa_1604555607:tgl */
>+	val = intel_uncore_read(engine->uncore, FF_MODE2);
>+	val &= ~FF_MODE2_TDS_TIMER_MASK;
>+	val |= FF_MODE2_TDS_TIMER_128;
>+	__wa_write_masked_or(wal, FF_MODE2, FF_MODE2_TDS_TIMER_MASK, val,
>+			     IS_TGL_REVID(engine->i915, 0, TGL_REVID_A0) ? 0:

isn't it broken until B0 rather than only on A0? I think we could just
disable the read back for all revs and then selectively enable it
for later.

Lucas De Marchi