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]) [1] https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
