Nishanth, On 04/01/21 8:21 pm, Nishanth Menon wrote: > On 18:52-20210104, Kishon Vijay Abraham I wrote: >> Nishanth, >> >> On 04/01/21 6:46 pm, Nishanth Menon wrote: >>> On 18:40-20210104, Kishon Vijay Abraham I wrote: >>>> Nishanth, >>>> >>>> On 04/01/21 6:29 pm, Nishanth Menon wrote: >>>>> On 17:52-20210104, Kishon Vijay Abraham I wrote: >>>>>> Patch series adds DT nodes in order to get PCIe working in J7200. >>>>>> Also includes couple of fixes for J721e. >>>>>> >>>>>> v1 of the patch series can be found @ [1] >>>>>> v2 of the patch series can be found @ [2] >>>>>> >>>>>> Changes from v2: >>>>>> 1) Moved serdes_refclk node out of interconnect node and also replaced >>>>>> "_" with "-" >>>>>> >>>>>> Changes from v1: >>>>>> 1) Include only the device tree patches here (the binding patch is sent >>>>>> separately) >>>>>> 2) Include couple of patches that fixes J721E DTS. >>>>>> >>>>>> [1] -> http://lore.kernel.org/r/20201102101154.13598-1-kishon@xxxxxx >>>>>> [2] -> http://lore.kernel.org/r/20201210130747.25436-1-kishon@xxxxxx >>>>>> >>>>>> Kishon Vijay Abraham I (6): >>>>>> arm64: dts: ti: k3-j721e-main: Fix supported max outbound regions >>>>>> arm64: dts: ti: k3-j721e-main: Remove "syscon" nodes added for >>>>>> pcieX_ctrl >>>>>> arm64: dts: ti: k3-j7200-main: Add SERDES and WIZ device tree node >>>>>> arm64: dts: ti: k3-j7200-main: Add PCIe device tree node >>>>>> arm64: dts: ti: k3-j7200-common-proc-board: Enable SERDES0 >>>>>> arm64: dts: ti: k3-j7200-common-proc-board: Enable PCIe >>>>>> >>>>>> .../dts/ti/k3-j7200-common-proc-board.dts | 38 ++++++ >>>>>> arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 111 ++++++++++++++++++ >>>>>> arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 52 ++------ >>>>>> 3 files changed, 157 insertions(+), 44 deletions(-) >>>>> >>>>> >>>>> A bit confused on the dependency here. is there something merged into >>>>> next-20210104 that makes this series ready for pickup? is there a way >>>>> I can get a immutable tag for driver fixups to pull so that my dts >>>>> next is not broken for PCIe (I am assuming looking at the series that >>>>> this is probably not a backward compatible series?)? >>>> >>>> There are no driver changes for the basic J7200 PCIe support and the DT >>>> bindings are already merged [1]. >>>> >>>> There are few errata fixes applicable for J721E which has to be removed >>>> for J7200 but that depends on other patches to be merged [1] but that >>>> doesn't impact j7200 functionality. >>>> >>>> [1] -> >>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml#n19 >>>> [2] -> http://lore.kernel.org/r/20201230120515.2348-1-nadeem@xxxxxxxxxxx >>> >>> So, Dropping stuff like "cdns,max-outbound-regions" (change from 16 to >>> 32) will work on older kernels? Could you do a quick sanity check on the >>> couple of "fixes" patches in this thread is not breaking functionality >>> introduced in the older stable kernels? >> >> Okay, the driver changes are done such that it works with both old DT >> and new DT however the newer DT will not work with old kernel. So I >> think I should drop the "Fixes" tag in the DT patches. > > If there is a specific stable kernel version you might like to use, you > could use that as well for those stable tags (see [1]) It's not a fix that might bother people (as it doesn't impact existing functionality), so don't think it's a candidate for stable releases. Thanks Kishon > > > [1] https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html >
