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Mon, 02 Nov 2026 00:40:17 -0800 (PST) Received: from [192.168.226.248] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b4ec9fcd6fsm2945801a12.21.2026.11.02.00.40.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Nov 2026 00:40:16 -0800 (PST) Message-ID: <719ca9f8-85c2-4d91-863c-849d38559447@oss.qualcomm.com> Date: Mon, 2 Nov 2026 09:40:13 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] drm/msm/a6xx: fall back to MX when gmxc.lvl has no levels To: Tyler Baker , Rob Clark Cc: Sean Paul , Konrad Dybcio , Akhil P Oommen , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20261030192014.694393-1-tyler.baker@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261030192014.694393-1-tyler.baker@oss.qualcomm.com> Content-Type: text/plain; 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On the A722 the first GX_BW_PERF_VOTE HFI then times out > and the GPU stops responding. Before a6xx_gmu_rpmh_read_arc() began > trimming trailing zero levels, every GX vote silently used level 0. > > Read gmxc.lvl with a6xx_gmu_rpmh_read_arc(), which rejects an entry > without levels, so the GX votes fall back to mx.lvl. > > Fixes: b5269bf0e1ad ("drm/msm/a6xx: Factor out RPMh arc-vote helpers") > Signed-off-by: Tyler Baker > --- Reviewed-by: Konrad Dybcio Konrad