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Tue, 22 Sep 2020 08:57:08 -0700 (PDT) Received: from kozik-lap ([194.230.155.191]) by smtp.googlemail.com with ESMTPSA id bx24sm11577039ejb.51.2020.09.22.08.57.05 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 22 Sep 2020 08:57:07 -0700 (PDT) Date: Tue, 22 Sep 2020 17:57:02 +0200 From: Krzysztof Kozlowski To: Rob Herring , Kukjin Kim , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ARM: dts: exynos: revert "add input clock to CMU in Exynos4412 Odroid" Message-ID: <20200922155702.GA5580@kozik-lap> References: <20200921174818.15525-1-krzk@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200921174818.15525-1-krzk@kernel.org> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200922_115711_687607_11FC66F9 X-CRM114-Status: GOOD ( 16.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Szyprowski Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Sep 21, 2020 at 07:48:18PM +0200, Krzysztof Kozlowski wrote: > This reverts commit eaf2d2f6895d676dda6c95a652b58594f2887720. > > The commit eaf2d2f6895d ("ARM: dts: exynos: add input clock to CMU in > Exynos4412 Odroid") breaks probing of usb3503 USB hub on Odroid U3. > > It changes the order of clock drivers probe: the clkout (Exynos PMU) > driver is probed before the main clk-exynos4 driver. The clkout driver > on Exynos4412 depends on clk-exynos4 but it does not support deferred > probe, therefore this dependency and changed probe order causes probe > failure. > > The usb3503 USB hub on Odroid U3 on the other hand requires clkout > clock. This can be seen in logs: > > [ 5.007442] usb3503 0-0008: unable to request refclk (-517) > > Reported-by: Marek Szyprowski > Signed-off-by: Krzysztof Kozlowski > --- > arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 1 - Applied. Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel