Messages in this thread | | | From | Jorge Ramirez-Ortiz <> | Subject | [PATCH 00/13] Support CPU frequency scaling on QCS404 | Date | Mon, 17 Dec 2018 10:46:17 +0100 |
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The following patchset enables CPU frequency scaling support on the QCS404.
Patch 8 "clk: qcom: hfpll: CLK_IGNORE_UNUSED" is a bit controversial; in this platform, this PLL provides the clock signal to a CPU core. But in others it might not.
I opted for the minimal ammount of changes without affecting the default functionality: simply bypassing the COMMON_CLK_DISABLE_UNUSED framework and letting the firwmare chose whether to enable or disable the clock at boot. However maybe a DT property and marking the clock as critical would be more appropriate for this PLL. I'd appreciate the maintainer's input on this topic.
Co-developed-by: Niklas Cassel <niklas.cassel@linaro.org> Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org> Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Jorge Ramirez-Ortiz (13): clk: qcom: gcc: limit GPLL0_AO_OUT operating frequency mbox: qcom: add APCS child device for QCS404 mbox: qcom: replace integer with valid macro dt-bindings: mailbox: qcom: Add clock-name optional property clk: qcom: apcs-msm8916: get parent clock names from DT clk: qcom: hfpll: get parent clock names from DT clk: qcom: hfpll: register as clock provider clk: qcom: hfpll: CLK_IGNORE_UNUSED arm64: dts: qcom: qcs404: Add OPP table arm64: dts: qcom: qcs404: Add HFPLL node arm64: dts: qcom: qcs404: Add the clocks for APCS mux/divider arm64: dts: qcom: qcs404: Add cpufreq support arm64: defconfig: Enable HFPLL
.../bindings/mailbox/qcom,apcs-kpss-global.txt | 21 +++++++++++++ arch/arm64/boot/dts/qcom/qcs404.dtsi | 35 ++++++++++++++++++++++ arch/arm64/configs/defconfig | 1 + drivers/clk/qcom/apcs-msm8916.c | 33 ++++++++++++++------ drivers/clk/qcom/gcc-qcs404.c | 6 ++++ drivers/clk/qcom/hfpll.c | 19 +++++++++++- drivers/mailbox/qcom-apcs-ipc-mailbox.c | 21 ++++++++----- 7 files changed, 118 insertions(+), 18 deletions(-)
-- 2.7.4
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