Hi! This series implements support for using RX FIFO thresholds higher than one in PIO mode on SCIF, HSCIF, SCIFA and SCIFB serial ports. This revision is the remainder of the series rebased to apply cleanly to tty-testing, with some minor style adjustments as suggested by Sergei. CU Uli Changes since v3: - rebased onto tty-testing - fixed a few style issues Changes since v2: - rebase - add missing changelog entry Changes since v1: - clarify HS trigger register enum - simplify DR bit handling - if() cascade -> switch() - disable RX trigger for SH77xx-style ports - clean up on failure to create sysfs attribute - r8a7796 DT: add control pins, rtscts flag Ulrich Hecht (4): serial: sh-sci: increase RX FIFO trigger defaults for (H)SCIF serial: sh-sci: SCIFA/B RX FIFO software timeout serial: sh-sci: make RX FIFO parameters tunable via sysfs arm64: dts: r8a7796: salvator-x: add SCIF1 (DEBUG1) arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts | 14 ++ drivers/tty/serial/sh-sci.c | 213 +++++++++++++++++---- 2 files changed, 195 insertions(+), 32 deletions(-) -- 2.7.4
