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Wed, 5 Aug 2020 09:16:12 +0000 (GMT) From: Marek Szyprowski To: linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org Cc: Marek Szyprowski , Sylwester Nawrocki , Chanwoo Choi , Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Lukasz Luba , Stephen Boyd Subject: [PATCH] clk: samsung: Mark top BPLL mux on Exynos542x as critical Date: Wed, 5 Aug 2020 11:16:01 +0200 Message-Id: <20200805091601.11983-1-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrJIsWRmVeSWpSXmKPExsWy7djP87p3K7TiDS7+kbXYOGM9q8X1L89Z Lc6f38Bu8bHnHqvF594jjBYzzu9jsljY1MJusfbIXXaLf9c2sli0P33J7MDlsWbeGkaPTas6 2Tz6tqxi9Pi8SS6AJYrLJiU1J7MstUjfLoEro2leN1tBE2dF2+8X7A2MF9m7GDk5JARMJHYs 7geyuTiEBFYwSqy62cAM4XxhlLi+ezILhPOZUWLe920sMC3tlxayQiSWM0p8ebCIDa5l/5PN YIPZBAwlut52sYHYIgIxEruuH2ECKWIWWMkk8eLUfSaQhLCAl8SDWWeBFnJwsAioShy8Xw8S 5hWwlVi14hArxDZ5idUbDoDdJCHwmE3i9cR7zBAJF4kLE69C2cISr45vgfpIRuL/zvlMEA3N jBIPz61lh3B6GCUuN81ghKiylrhz7hcbyGZmAU2J9bv0IcKOEi1LG8EOkhDgk7jxVhAkzAxk Tto2HSrMK9HRJgRRrSYx6/g6uLUHL1yCKvGQuHCmGiQsJBArMWfufcYJjHKzEFYtYGRcxSie Wlqcm55abJSXWq5XnJhbXJqXrpecn7uJEZggTv87/mUH464/SYcYBTgYlXh4T4RoxguxJpYV V+YeYpTgYFYS4XU6ezpOiDclsbIqtSg/vqg0J7X4EKM0B4uSOK/xopexQgLpiSWp2ampBalF MFkmDk6pBsbYB4+D8pK+Xd3uvKs1ffvvst2124OP6ByzfnLoI+en5/eecBhEqbbe7tge5aYb G5zaeEJPKXRzR/d5vwUMa9c49532Mktc9u1V5Mfuf87Fe5O+nijK2jhFdsda56sW7lc+xjQv 8paYOuWogK7uz2snputIbk/MXJZh+zzrmoRRZlg5d5D8h4NKLMUZiYZazEXFiQAQfldPDAMA AA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrHLMWRmVeSWpSXmKPExsVy+t/xe7p3KrTiDSaftLLYOGM9q8X1L89Z Lc6f38Bu8bHnHqvF594jjBYzzu9jsljY1MJusfbIXXaLf9c2sli0P33J7MDlsWbeGkaPTas6 2Tz6tqxi9Pi8SS6AJUrPpii/tCRVISO/uMRWKdrQwkjP0NJCz8jEUs/Q2DzWyshUSd/OJiU1 J7MstUjfLkEvo2leN1tBE2dF2+8X7A2MF9m7GDk5JARMJNovLWTtYuTiEBJYyihx5dcOJoiE jMTJaQ2sELawxJ9rXWwQRZ8YJQ4vbgZLsAkYSnS9BUlwcogIxEk86b4P1swssJZJ4s4teRBb WMBL4sGss8xdjBwcLAKqEgfv14OEeQVsJVatOAQ1X15i9YYDzBMYeRYwMqxiFEktLc5Nzy02 0itOzC0uzUvXS87P3cQIDMttx35u2cHY9S74EKMAB6MSD++JEM14IdbEsuLK3EOMEhzMSiK8 TmdPxwnxpiRWVqUW5ccXleakFh9iNAXaPZFZSjQ5HxgzeSXxhqaG5haWhubG5sZmFkrivB0C B2OEBNITS1KzU1MLUotg+pg4OKUaGEPOKfw2l89hyCv/LvnS6/O6GpmzH31cWKVaOZf47gxI s1UNL882MVZ5nd0lIWq24fvsPnn+FXr6Jzof5z09tfsn692Tjx/7V/wUPbkrRWab8l6XyZ8j Zkw4/Z3LIeihv2pqZ6y7l1PsEUfeNuMH8ZNSM5dfL1PLPt3jl3ha80eEMktqB2eBEktxRqKh FnNRcSIA2lGulWECAAA= X-CMS-MailID: 20200805091612eucas1p28c955b21e57898de60d3ed50c95b9d18 X-Msg-Generator: CA X-RootMTR: 20200805091612eucas1p28c955b21e57898de60d3ed50c95b9d18 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200805091612eucas1p28c955b21e57898de60d3ed50c95b9d18 References: Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org BPLL clock must not be disabled because it is needed for proper DRAM operation. This is normally handled by respective memory devfreq driver, but when that driver is not yet probed or its probe has been deferred the clock might got disabled what causes board hang. Fix this by marking it as critical. Signed-off-by: Marek Szyprowski --- drivers/clk/samsung/clk-exynos5420.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c index fea33399a632..5ef78928938a 100644 --- a/drivers/clk/samsung/clk-exynos5420.c +++ b/drivers/clk/samsung/clk-exynos5420.c @@ -734,7 +734,7 @@ static const struct samsung_mux_clock exynos5x_mux_clks[] __initconst = { MUX_F(CLK_MOUT_MCLK_CDREX, "mout_mclk_cdrex", mout_mclk_cdrex_p, SRC_CDREX, 4, 1, CLK_SET_RATE_PARENT, 0), MUX_F(CLK_MOUT_BPLL, "mout_bpll", mout_bpll_p, SRC_CDREX, 0, 1, - CLK_SET_RATE_PARENT, 0), + CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, 0), /* MAU Block */ MUX(CLK_MOUT_MAUDIO0, "mout_maudio0", mout_maudio0_p, SRC_MAU, 28, 3),