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Sat, 19 Aug 2023 00:41:42 -0700 (PDT) Received: from [192.168.0.22] ([77.252.47.198]) by smtp.gmail.com with ESMTPSA id bv24-20020a170906b1d800b0099b8234a9fesm2241070ejb.1.2023.08.19.00.41.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 19 Aug 2023 00:41:42 -0700 (PDT) Message-ID: Date: Sat, 19 Aug 2023 09:41:40 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Subject: Re: [PATCH 5/8] phy: exynos5-usbdrd: Add 26MHz ref clk support Content-Language: en-US To: Sam Protsenko , Rob Herring , Thinh Nguyen Cc: JaeHun Jung , Marek Szyprowski , Sylwester Nawrocki , Conor Dooley , Vinod Koul , Kishon Vijay Abraham I , Greg Kroah-Hartman , Alim Akhtar , Marc Kleine-Budde , Heiko Stuebner , linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org References: <20230819031731.22618-1-semen.protsenko@linaro.org> <20230819031731.22618-6-semen.protsenko@linaro.org> From: Krzysztof Kozlowski In-Reply-To: <20230819031731.22618-6-semen.protsenko@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230819_004146_696019_41DDFA48 X-CRM114-Status: GOOD ( 14.67 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 19/08/2023 05:17, Sam Protsenko wrote: > Modern Exynos chips (like Exynos850) might have 26 MHz OSCCLK external > clock, which is also used as a PHY reference clock. For some USB PHY > controllers (e.g USB DRD PHY block on Exynos850) there is no need to set > the refclk frequency at all (and corresponding bits in CLKRSTCTRL[7:5] > are marked RESERVED), so that value won't be set in the driver. But > even in that case, 26 MHz support still has to be added, otherwise > exynos5_rate_to_clk() fails, which leads in turn to probe error. > > Add the correct value for 26MHz refclk to make it possible to add > support for new Exynos USB DRD PHY controllers. > > Signed-off-by: Sam Protsenko > --- Reviewed-by: Krzysztof Kozlowski Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel