Here are the clk and DTS patches to enable MSIOF on R-Car S4-8 and the Spider board. I could only test MSIOF0 and 2 which worked fine. MSIOF1 and 3 are in parallel with the FTDIs for the debug consoles. So, likely because of that, reading data always results in zeroes. There are questions left in patch 1+2. Looking forward to comments, Wolfram Duc Nguyen (1): arm64: dts: renesas: r8a779f0: Add MSIOF nodes Wolfram Sang (3): clk: renesas: r8a779f0: Add MSIOF clocks arm64: dts: renesas: spider-cpu: Add MSIOF node TEST: arm64: dts: renesas: spider: Add MSIOF node .../boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 12 ++++ .../boot/dts/renesas/r8a779f0-spider.dts | 8 +++ arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 72 +++++++++++++++++++ drivers/clk/renesas/r8a779f0-cpg-mssr.c | 4 ++ 4 files changed, 96 insertions(+) -- 2.35.1