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Specifically the LPM metadata > region is important as bootloader software like U-Boot has to know where > that data is to be able to read that data and resume from RAM. > > The bindings are already applied. The remaining patches use the new > layout for the platforms that are capable to support IO+DDR. For IO+DDR > the new layout is necessary as it defines the location of the LPM > metadata. > > Additionally the two important devicetree nodes for resuming from IO+DDR > have the bootph-pre-ram flag added as this data needs to be read before > the RAM is in use. > > The changes in this series were suggested as part of the IO+DDR u-boot series: > https://lore.kernel.org/r/814c211f-a9eb-4311-bb84-165b1a69755f@ti.com > > Note that concerns about uboot fixup of memory region fixups were > discussed here: > https://lore.kernel.org/r/DJD1Y3G9S1SP.2GHOZ5X4RYJFA@baylibre.com > > Best > Markus > > Signed-off-by: Markus Schneider-Pargmann (TI) > --- > Changes in v8: > - Rebase to v7.3-rc1 > - Increase the AM62A wkup R5F memory region to end at 0x9e700000 to > also fit the edgeai DM firmware as requested by Paresh > - Move the memory region definitions back into the base board dts files > of all AM62A and AM62P boards > - Added bootph-pre-ram to the memory regions are merged into the > bootph-pre-ram at the end of the series > - Link to v7: https://lore.kernel.org/r/20260701-topic-am62a-ioddr-dt-v6-19-v7-0-e9db8b16821a@baylibre.com > > Changes in v7: > - Rebase to v7.1-rc1 > - Fix commit messages > - Link to v6: https://lore.kernel.org/r/20260609-topic-am62a-ioddr-dt-v6-19-v6-0-16afba97fbe0@baylibre.com > > Changes in v6: > - Added fixes for the length of the wkup_r5fss0_core0_memory_region. > Thanks Francesco for pointing that out. am62a firmware is shorter than > am62p firmware. I calculated both and fixed all devicetrees using > them. All patches have different Fixes tags so I kept them separate. > - Fixed the length of the split memory layout as well. > - Removed the double definition of memory regions for the var-som board. > - Link to v5: https://lore.kernel.org/r/20260601-topic-am62a-ioddr-dt-v6-19-v5-0-3856a023aff2@baylibre.com > > Changes in v5: > - Move all changes into k3-am62a/p-ti-ipc-firmware.dtsi > - Dropped the patch that adds bootph-pre-ram to k3-am62a stuff as it is > already present in k3-am62d2-evm.dts and got moved into the > firmware.dtsi file which covers am62a as well then. > - Link to v4: https://lore.kernel.org/r/20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com > > Changes in v4: > - Rebased to v7.1-rc1 > - Dropped all already applied patches that are the bindings and the > initial introduction of memory-region-names > - Link to v3: https://lore.kernel.org/r/20260318-topic-am62a-ioddr-dt-v6-19-v3-0-c41473cb23c3@baylibre.com > > Changes in v3: > - Squash the enforcement of the memory-region-names requirement in the > patch adding the memory-region-names, as suggested. > - Link to v2: https://lore.kernel.org/r/20260312-topic-am62a-ioddr-dt-v6-19-v2-0-37cb7ceec658@baylibre.com > > Changes in v2: > - Make memory-region-names required if memory-region is present > - Fixup memory-region and memory-region-names conditions. Require either > 2 or 6 regions for memory-region and memory-region-names > - Reword and restructure the binding documentation for memory-region and > memory-region-names > - Add memory-region-names to all uses of memory-region > - Link to v1: https://lore.kernel.org/r/20260303-topic-am62a-ioddr-dt-v6-19-v1-0-12fe72bb40d2@baylibre.com > > To: Nishanth Menon > To: Vignesh Raghavendra > To: Tero Kristo > To: Rob Herring > To: Krzysztof Kozlowski > To: Conor Dooley > To: Nathan Chancellor > To: Nick Desaulniers > To: Bill Wendling > To: Justin Stitt > To: Andrew Davis > To: Judith Mendez > To: Daniel Schultz > To: Siddharth Vadapalli > To: Bryan Brattlof > To: Paresh Bhagat > To: Devarsh Thakkar > To: Jai Luthra > To: Beleswar Padhi > To: Francesco Dolcini > To: Stefano Radaelli > Cc: linux-arm-kernel@lists.infradead.org > Cc: devicetree@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: llvm@lists.linux.dev > Cc: Hari Nagalla > > --- > Markus Schneider-Pargmann (TI) (9): > arm64: dts: ti: k3-am62a-phycore-som: Fix wkup R5F memory region size > arm64: dts: ti: k3-am62d2-evm: Fix wkup R5F memory region size > arm64: dts: ti: k3-am62a7-sk: Fix wkup R5F memory region size > arm64: dts: ti: k3-am62p-verdin: Fix wkup R5F memory region size > arm64: dts: ti: k3-am62p5-sk: Fix wkup R5F memory region size > arm64: dts: ti: var-som-am62p: Fix wkup R5F memory region size > arm64: dts: ti: k3-am62a: Split r5f memory region > arm64: dts: ti: k3-am62p: Split r5f memory region > arm64: dts: ti: Add wkup R5F nodes to pre-ram bootphase > > arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi | 29 ++++++++++++++++++-- > .../boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi | 11 ++++++-- > arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 29 ++++++++++++++++++-- > arch/arm64/boot/dts/ti/k3-am62d2-evm.dts | 32 ++++++++++++++++++---- > .../boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi | 11 ++++++-- > arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi | 29 ++++++++++++++++++-- > arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 29 ++++++++++++++++++-- > arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi | 29 ++++++++++++++++++-- > 8 files changed, 179 insertions(+), 20 deletions(-) Thanks Markus for dealing with all the back and forth on the Linux and bootloader sides. Reviewed-by: Bryan Brattlof ~Bryan