On Wed, Apr 13, 2022 at 08:31:31PM +0300, Dmitry Baryshkov wrote: > On 22/03/2022 02:15, Ansuel Smith wrote: > > This is a follow-up to the ipq806x gcc modernize series. Manu cleanup > > changes and also some discoveries of wrong definition notice only with > > all these conversions. > > General comment regarding this patch series. It contains fixes, clock > conversion for several drivers, dts fixes, etc. It's, for example, not > straightforwardly obvious if Bjorn can pickup patches 04 or 06 without > picking up other patches. > > If would be best if you can split this series or at least pull fixes to be > the first patches in the pile. > Considering that now this is grown to 21 patch in v7 (that is still have to push)... Yes I think I have to split this... Wonder if you can give me some hint. - Series for krait-cc - Series for kpss-acc/gcc - Single patch for hfpll - Single patch for gcc fixes - Series for kpss-xcc - Series for clk-krait - Series for dts fixes? Wonder if this kind of split can work? > Patch 01 is only used by patch 10, they can stay close. > > In some of the commit messages you describe what do they do, but you > completely omit the reason for the change, why is the change necessary. > (Yes, I spot that because I also too often skip that). > > > > > The first patch is an improvement of the clk_hw_get_parent_index. The > > original idea of clk_hw_get_parent_index was to give a way to access the > > parent index but for some reason the final version limited it to the > > current index. We change it to give the current parent if is not > > provided and to give the requested parent if provided. Any user of this > > function is updated to follow the new implementation. > > > > The patch 2 and 3 are some additional fixes for gcc. > > The first one is a fix that register the pxo and cxo fixed clock only if > > they are not defined in DTS. > > The patch 3 require some explaination. In short is a big HACK to prevent > > kernel panic with this series. > > > > The kpss-xcc driver is a mess. > > The Documentation declare that the clocks should be provided but for some > > reason it was never followed. > > In fact in the ipq8064 DTSI only the clocks for l2cc are declared but > > for cpu0 and cpu1 the clocks are not defined. > > The kpss-xcc driver use parent_names so the clks are ignored and never > > used so till now it wasn't a problem (ignoring the fact that they > > doesn't follow documentation at all) > > On top of that, the l2cc node declare the pxo clock in a really strange > > way. It's declared using the PXO_SRC gcc clock that is never defined in > > the gcc ipq8064 clock table. (the correct way was to declare a fixed > > clock in dts and reference that) > > To prevent any kind of problem we use the patch 3 and provide the clk > > for PXO_SRC in the gcc clock table. We manually provide the clk after > > gcc probe. > > > > Patch 4 is just a minor cleanup where we use the poll macro > > > > Patch 5 is the actually kpss-xcc conversion to parent data > > > > Patch 6-7 should be a fixup of a real conver case > > > > Patch 8 converts the krait-cc to parent_data > > Patch 9 give some love to the code with some minor fixup > > Patch 10 drop the hardcoded safe sel and use the new > > clk_hw_get_parent_index to get the safe parent index. > > (also I discovered that the parent order was wrong) > > > > Patch 11 is an additional fixup to force the reset of the muxes even > > more. > > > > Patch 12-13 are some additiona taken from the qsdk that were missing in > > the upstream driver > > > > Patch 14 converts krait-cc to yaml > > > > Patch 15 add to krait-cc Documentation the L2 clocks > > > > Patch 16 converts the kpss-acc driver to yaml and fix some Documentation > > error > > > > Patch 17 convets the kpss-gcc driver to yaml > > > > Patch 18 finally adds all this stuff to the ipq8064 dtsi (and fix the > > stupid PXO_SRC phandle) > > > > I tested this series on a ipq8064 SoC by running a cache benchmark test > > to make sure the changes are correct and we don't silently cause > > regressions. Also I compared the output of the clk_summary every time > > and we finally have a sane output where the mux are correctly placed in > > the correct parent. (till now we had the cpu aux clock all over the > > place, probably never cause problems but who knows.) > > > > v6: > > - Move dts patch as last patch > > - Address commencts from Rob > > - Fix warning from make dtbs_check > > v5: > > - Address comments from Krzysztof > > v4: > > - Fix more dt-bindings bog errors > > v3: > > - Split Documentation files for kpss and krait-cc > > v2: > > - introduce new API instead of fixing the existing one > > - do not reorganize variables in krait-cc > > - fix some comments error and improve it > > - return better error for patch 7 > > - fix missing new line on patch 16 > > > > Ansuel Smith (18): > > clk: introduce clk_hw_get_index_of_parent new API > > clk: qcom: gcc-ipq806x: skip pxo/cxo fixed clk if already present > > clk: qcom: gcc-ipq806x: add PXO_SRC in clk table > > clk: qcom: clk-hfpll: use poll_timeout macro > > clk: qcom: kpss-xcc: convert to parent data API > > clk: qcom: clk-krait: unlock spin after mux completion > > clk: qcom: clk-krait: add hw_parent check for div2_round_rate > > clk: qcom: krait-cc: convert to parent_data API > > clk: qcom: krait-cc: drop pr_info and register qsb only if needed > > clk: qcom: krait-cc: drop hardcoded safe_sel > > clk: qcom: krait-cc: force sec_mux to QSB > > clk: qcom: clk-krait: add apq/ipq8064 errata workaround > > clk: qcom: clk-krait: add enable disable ops > > dt-bindings: clock: Convert qcom,krait-cc to yaml > > dt-bindings: clock: Add L2 clocks to qcom,krait-cc Documentation > > dt-bindings: arm: msm: Convert kpss-acc driver Documentation to yaml > > dt-bindings: arm: msm: Convert kpss-gcc driver Documentation to yaml > > ARM: dts: qcom: qcom-ipq8064: add missing krait-cc compatible and > > clocks > > > > .../bindings/arm/msm/qcom,kpss-acc.txt | 49 ----- > > .../bindings/arm/msm/qcom,kpss-acc.yaml | 94 +++++++++ > > .../bindings/arm/msm/qcom,kpss-gcc.txt | 44 ----- > > .../bindings/arm/msm/qcom,kpss-gcc.yaml | 69 +++++++ > > .../bindings/clock/qcom,krait-cc.txt | 34 ---- > > .../bindings/clock/qcom,krait-cc.yaml | 65 ++++++ > > arch/arm/boot/dts/qcom-ipq8064.dtsi | 24 ++- > > drivers/clk/clk.c | 14 ++ > > drivers/clk/qcom/clk-hfpll.c | 13 +- > > drivers/clk/qcom/clk-krait.c | 44 ++++- > > drivers/clk/qcom/clk-krait.h | 1 + > > drivers/clk/qcom/gcc-ipq806x.c | 27 ++- > > drivers/clk/qcom/kpss-xcc.c | 25 +-- > > drivers/clk/qcom/krait-cc.c | 186 ++++++++++-------- > > include/linux/clk-provider.h | 1 + > > 15 files changed, 453 insertions(+), 237 deletions(-) > > delete mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt > > create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.yaml > > delete mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt > > create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.yaml > > delete mode 100644 Documentation/devicetree/bindings/clock/qcom,krait-cc.txt > > create mode 100644 Documentation/devicetree/bindings/clock/qcom,krait-cc.yaml > > > > > -- > With best wishes > Dmitry -- Ansuel
