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boundary="------------fZdrnz4gwF5iEgnFYdM3sng8"; protected-headers="v1" Message-ID: Date: Wed, 11 Mar 2026 11:41:13 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] drm/imagination: Skip 2nd thread DM association for non META Firmware To: Brajesh Gupta Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Frank Binns , Alessio Belle , Alexandru Dadu , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20260305-b4-staging-layout_mars_base-v1-0-09831fa17cef@imgtec.com> <20260305-b4-staging-layout_mars_base-v1-2-09831fa17cef@imgtec.com> Content-Language: en-GB From: Matt Coster Autocrypt: addr=matt.coster@imgtec.com; keydata= xjMEYl2lchYJKwYBBAHaRw8BAQdAOYlooFfHTXzAQ9aGoSnT9JS9wq8xprG+KVLbkxJDF5DN JE1hdHQgQ29zdGVyIDxtYXR0LmNvc3RlckBpbWd0ZWMuY29tPsKWBBMWCAA+AhsDBQsJCAcC BhUKCQgLAgQWAgMBAh4BAheAFiEEBaQM/OcmnWHZcQChdH8KkDb5DfoFAmgHpowFCQlsaBoA CgkQdH8KkDb5DfqxDgEA81pbVLJDmpFyFZLRhAGig9rgoDY6l774yhTzRVm/SvkBAJLzpSlm wyQaQuB668TKOX9XvRLKFGjSq5kkdQcxqjkCzjgEYl2lchIKKwYBBAGXVQEFAQEHQCaVC8X5 7NOv2jNbeXqjP9ekY7rzy7auiEZ5PxaDWUQVAwEIB8J+BBgWCAAmAhsMFiEEBaQM/OcmnWHZ cQChdH8KkDb5DfoFAmgHpowFCQlsaBoACgkQdH8KkDb5DfoK+AD/Q4aN/zUvP72RRE4cNWpM MXeRXg+LTN+OJ24U10LltxIA/2w3kDqMC/0t1oqO8TM+c2LMWO/x2IBkG7oRZ/hVw1QI In-Reply-To: <20260305-b4-staging-layout_mars_base-v1-2-09831fa17cef@imgtec.com> --------------fZdrnz4gwF5iEgnFYdM3sng8 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 05/03/2026 11:06, Brajesh Gupta wrote: > Only a META firmware can have two threads. If this is invalid behaviour on non-META firwmare processors, should this be considered a fix (and gain a Fixes: tag)? I guess technically it doesn't fix the commit that added these lines[1] since that was only adding support for META. Would it be fixing the follow up to add MIPS support[2]? I'm not sure. Maybe it doesn't even need a Fixes: tag. >=20 > Signed-off-by: Brajesh Gupta Either way, the content is: Reviewed-by: Matt Coster [1]: commit cc1aeedb98ad3 ("drm/imagination: Implement firmware infrastru= cture and META FW support") [2]: commit 927f3e0253c11 ("drm/imagination: Implement MIPS firmware proc= essor and MMU support") > --- > drivers/gpu/drm/imagination/pvr_fw_startstop.c | 14 ++++++++------ > 1 file changed, 8 insertions(+), 6 deletions(-) >=20 > diff --git a/drivers/gpu/drm/imagination/pvr_fw_startstop.c b/drivers/g= pu/drm/imagination/pvr_fw_startstop.c > index ce089f51f06a..3bca57cbaaf0 100644 > --- a/drivers/gpu/drm/imagination/pvr_fw_startstop.c > +++ b/drivers/gpu/drm/imagination/pvr_fw_startstop.c > @@ -242,12 +242,14 @@ pvr_fw_stop(struct pvr_device *pvr_dev) > ROGUE_CR_MTS_BGCTX_THREAD0_DM_ASSOC_MASKFULL & > ROGUE_CR_MTS_BGCTX_THREAD0_DM_ASSOC_DM_ASSOC_CLR= MSK); >=20 > - pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC, > - ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC_MASKFULL & > - ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC_DM_ASSOC_CL= RMSK); > - pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC, > - ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC_MASKFULL & > - ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC_DM_ASSOC_CLR= MSK); > + if (pvr_dev->fw_dev.processor_type =3D=3D PVR_FW_PROCESSOR_TYPE= _META) { > + pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_INTCTX_THREAD1_DM_= ASSOC, > + ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC_MAS= KFULL & > + ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC_DM_= ASSOC_CLRMSK); > + pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_BGCTX_THREAD1_DM_A= SSOC, > + ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC_MASK= FULL & > + ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC_DM_A= SSOC_CLRMSK); > + } >=20 > /* Extra Idle checks. */ > err =3D pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_BIF_STATUS_MMU, 0, >=20 > -- > 2.43.0 >=20 --=20 Matt Coster E: matt.coster@imgtec.com --------------fZdrnz4gwF5iEgnFYdM3sng8-- --------------DqblFcBct7Xk23QhzPa0zgkI Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- wnsEABYIACMWIQS4qDmoJvwmKhjY+nN5vBnz2d5qsAUCabFU2QUDAAAAAAAKCRB5vBnz2d5qsEPo AP0RiZEhabkrBS/mNeZuT6pGeHpDZ9eVO+xZopGR0ZQHWwEAk48W3GvyvQMJaaMRdGWUl3O9p7z0 Z9JDmZb2hfiEQQ0= =KLdv -----END PGP SIGNATURE----- --------------DqblFcBct7Xk23QhzPa0zgkI--