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03e053b4 |
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20-May-2022 |
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> |
Revert "clk: qcom: regmap-mux: add pipe clk implementation" Johan Hovold has pointed out that there are several deficiencies and a race condition in the regmap_mux_safe ops that were merged. Pipe clocks has been updated to use newer and simpler clk_regmap_phy_mux_ops. Drop the regmap-mux-safe clock ops now. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Tested-by: Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220521005343.1429642-4-dmitry.baryshkov@linaro.org
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e9a4c7f6 |
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23-Mar-2022 |
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> |
clk: qcom: regmap-mux: add pipe clk implementation On recent Qualcomm platforms the QMP PIPE clocks feed into a set of muxes which must be parked to the "safe" source (bi_tcxo) when corresponding GDSC is turned off and on again. Currently this is handcoded in the PCIe driver by reparenting the gcc_pipe_N_clk_src clock. However the same code sequence should be applied in the pcie-qcom endpoint, USB3 and UFS drivers. Rather than copying this sequence over and over again, follow the example of clk_rcg2_shared_ops and implement this parking in the enable() and disable() clock operations. As we are changing the parent behind the back of the clock framework, also implement custom set_parent() and get_parent() operations behaving accroding to the clock framework expectations (cache the new parent if the clock is in disabled state, return cached parent). Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220323085010.1753493-2-dmitry.baryshkov@linaro.org
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9a61f813 |
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15-Nov-2021 |
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> |
clk: qcom: regmap-mux: fix parent clock lookup The function mux_get_parent() uses qcom_find_src_index() to find the parent clock index, which is incorrect: qcom_find_src_index() uses src enum for the lookup, while mux_get_parent() should use cfg field (which corresponds to the register value). Add qcom_find_cfg_index() function doing this kind of lookup and use it for mux parent lookup. Fixes: df964016490b ("clk: qcom: add parent map for regmap mux") Cc: stable@vger.kernel.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20211115233407.1046179-1-dmitry.baryshkov@linaro.org Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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9c92ab61 |
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29-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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df964016 |
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13-Dec-2017 |
Abhishek Sahu <absahu@codeaurora.org> |
clk: qcom: add parent map for regmap mux Currently the driver assumes the register configuration value is identical to its index in the parent map. This patch adds the parent map field in regmap mux clock node which contains the mapping of parent index with actual register configuration value. If regmap node contains this parent map then the configuration value will be taken from this parent map instead of simply writing the index value. Signed-off-by: Abhishek Sahu <absahu@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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b3ee3eff |
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19-Jan-2015 |
Stephen Boyd <sboyd@codeaurora.org> |
clk: qcom: Add simple regmap based muxes Add support for muxes that use regmap instead of readl/writel directly. We don't support as many features as clk-mux.c, but this is good enough to support getting and setting parents. Adding a table based lookup can be added in the future if needed. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Kenneth Westfield <kwestfie@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
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