Hi all, Documentation/devicetree/bindings/dma/renesas,shdma.txt is one of the few^W57% of the DT bindings that haven't been converted to json-schema yet. These bindings were originally intended to cover all SH/R-Mobile SoCs, but the DMA multiplexer node and one DMA controller instance were only ever added to one .dtsi file, for R-Mobile APE6. Still, DMA support for R-Mobile APE6 was never completed to the point that it would actually work, cfr. commit a19788612f51b787 ("dmaengine: sh: Remove R-Mobile APE6 support"). Later, the mux idea was dropped when implementing support for DMA on (very similar) R-Car Gen2, cfr. renesas,rcar-dmac.yaml. Hence this series removes the Renesas SHDMA Device Tree bindings, the SHDMA DMA multiplexer driver, and the corresponding description in the R-Mobile APE6 DTS. I plan to queue [PATCH 3/3] in renesas-devel for v5.15. Thanks for your comments! Geert Uytterhoeven (3): dt-bindings: dmaengine: Remove SHDMA Device Tree bindings dmaengine: sh: Remove unused shdma-of driver ARM: dts: r8a73a4: Remove non-functional DMA support .../devicetree/bindings/dma/renesas,shdma.txt | 84 ------------------- arch/arm/boot/dts/r8a73a4.dtsi | 44 ---------- drivers/dma/sh/Makefile | 2 +- drivers/dma/sh/shdma-of.c | 76 ----------------- 4 files changed, 1 insertion(+), 205 deletions(-) delete mode 100644 Documentation/devicetree/bindings/dma/renesas,shdma.txt delete mode 100644 drivers/dma/sh/shdma-of.c -- 2.25.1 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds