The newest generation of Renesas R-Car SoCs support FastMode+. This series enables the driver to use it. After a cleanup (patch 1) and adding the Gen4 devtype (patch 2), actual FM+ support gets added in patch 3. Tested on a Falcon board with a R-Car V3U. Getting >16KB of data from the PMIC was pretty much 2.5x faster than without FM+ which pretty much matches the theoretical values. Actual scoping still needs to be done as it needs some logistics because of the board being remote. But here the patches already for review. Note: I intend to remove the brute-force algorithm from the regular clock calculation as well. This will be a separate series, though, because more cleanups are possible. Thanks and happy hacking! Wolfram Sang (3): i2c: rcar: avoid non-standard use of goto i2c: rcar: introduce Gen4 devices i2c: rcar: add FastMode+ support drivers/i2c/busses/i2c-rcar.c | 142 +++++++++++++++++++++++----------- 1 file changed, 95 insertions(+), 47 deletions(-) -- 2.35.1
