On 30-03-22, 20:15, Palmer Dabbelt wrote: > On Mon, 28 Mar 2022 02:52:21 PDT (-0700), zong.li@xxxxxxxxxx wrote: > > The PDMA driver currently assumes there are four channels by default, it > > might cause the error if there is actually less than four channels. > > Change that by getting number of channel dynamically from device tree. > > For backwards-compatible, it uses the default value (i.e. 4) when there > > is no 'dma-channels' information in dts. > > > > This patch set contains the dts and dt-bindings change. > > > > Changed in v8: > > - Rebase on master > > - Remove modification of microchip-mpfs.dtsi > > - Rename DMA node name of fu540-c000.dtsi > > > > Changed in v7: > > - Rebase on tag v5.17-rc7 > > - Modify the subject of patch > > > > Changed in v6: > > - Rebase on tag v5.17-rc6 > > - Change sf_pdma.chans[] to a flexible array member. > > > > Changed in v5: > > - Rebase on tag v5.17-rc3 > > - Fix typo in dt-bindings and commit message > > - Add PDMA versioning scheme for compatible > > > > Changed in v4: > > - Remove cflags of debug use reported-by: kernel test robot <lkp@xxxxxxxxx> > > > > Changed in v3: > > - Fix allocating wrong size > > - Return error if 'dma-channels' is larger than maximum > > > > Changed in v2: > > - Rebase on tag v5.16 > > - Use 4 as default value of dma-channels > > > > Zong Li (4): > > dt-bindings: dma-engine: sifive,fu540: Add dma-channels property and > > modify compatible > > riscv: dts: Add dma-channels property and modify compatible > > riscv: dts: rename the node name of dma > > dmaengine: sf-pdma: Get number of channel by device tree > > > > .../bindings/dma/sifive,fu540-c000-pdma.yaml | 19 +++++++++++++-- > > arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 5 ++-- > > drivers/dma/sf-pdma/sf-pdma.c | 24 ++++++++++++------- > > drivers/dma/sf-pdma/sf-pdma.h | 8 ++----- > > 4 files changed, 38 insertions(+), 18 deletions(-) > > Thanks, these are on for-next. The drivers/dma/ should go thru dmaengine tree. During merge window I dont apply the patches -- ~Vinod
