DMAs on TI K3 SoCs have channel configuration registers region which are usually hidden from Linux and configured via Device Manager Firmware APIs. But certain early SWs like bootloader which run before Device Manager is fully up would need to directly configure these registers and thus require to be in DT description. This add bindings for such configuration regions. Backward compatibility is maintained to existing DT by only mandating existing regions to be present and this new region as optional. This update is mainly to aid SPL/U-Boot to reuse kernel DT as is. And is applicable to entire K3 SoCs. v3: Add back toplevel reg and reg-names constraints in k3-bcdma.yaml v2: https://lore.kernel.org/all/20231122154238.815781-1-vigneshr@xxxxxx v2: Fix issues pointed out by Conor and Peter * Add new patch 1/4 to describe existing register regions * Rename cfg region as ring * Add bchan register space for bcdma * Include descriptions for new registers v1: https://lore.kernel.org/all/20230810174356.3322583-1-vigneshr@xxxxxx/ Vignesh Raghavendra (4): dt-bindings: dma: ti: k3-*: Add descriptions for register regions dt-bindings: dma: ti: k3-bcdma: Describe cfg register regions dt-bindings: dma: ti: k3-pktdma: Describe cfg register regions dt-bindings: dma: ti: k3-udma: Describe cfg register regions .../devicetree/bindings/dma/ti/k3-bcdma.yaml | 39 ++++++++++++++++--- .../devicetree/bindings/dma/ti/k3-pktdma.yaml | 26 +++++++++++-- .../devicetree/bindings/dma/ti/k3-udma.yaml | 20 ++++++++-- 3 files changed, 73 insertions(+), 12 deletions(-) -- 2.43.0
