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Mon, 26 Jul 2021 01:12:50 -0700 (PDT) From: Neil Armstrong To: linux-amlogic@lists.infradead.org, Martin Blumenstingl Cc: Neil Armstrong , jbrunet@baylibre.com, khilman@baylibre.com, Demetris Ierokipides , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] ARM: dts: meson8: Use a higher default GPU clock frequency Date: Mon, 26 Jul 2021 10:12:39 +0200 Message-Id: <162728713307.14205.9620047585632922207.b4-ty@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210711214023.2163565-1-martin.blumenstingl@googlemail.com> References: <20210711214023.2163565-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210726_011253_153724_9EB35D86 X-CRM114-Status: GOOD ( 11.13 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Hi, On Sun, 11 Jul 2021 23:40:23 +0200, Martin Blumenstingl wrote: > We are seeing "imprecise external abort (0x1406)" errors during boot > (which then cause the whole board to hang) on Meson8 (but not Meson8m2). > These are observed while trying to access the GPU's registers when the > MALI clock is running at it's default setting of 24MHz. The 3.10 vendor > kernel uses 318.75MHz as "default" GPU frequency. Using that makes the > "imprecise external aborts" go away. > Add the assigned-clocks and assigned-clock-rates properties to also bump > the MALI clock to 318.75MHz before accessing any of it's registers. Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (for-next) [1/1] ARM: dts: meson8: Use a higher default GPU clock frequency https://git.kernel.org/amlogic/c/44cf630bcb8c5ec78125805c9447dd5766792224 -- Neil _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic