| Message ID | cover.1674499048.git.geert+renesas@glider.be |
|---|---|
| Headers | show |
| Series | can: rcar_canfd: Add support for R-Car V4H systems | expand |
On Mon, 23 Jan 2023 19:56:04 +0100, Geert Uytterhoeven wrote: > Document support for the CAN-FD Interface on the Renesas R-Car V4H > (R8A779G0) SoC. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- > .../devicetree/bindings/net/can/renesas,rcar-canfd.yaml | 1 + > 1 file changed, 1 insertion(+) > Acked-by: Rob Herring <robh@kernel.org>
Hi all, This patch series adds support for the CAN-FD interface on the Renesas R-Car V4H (R8A779G0) SoC and support for CAN transceivers described as PHYs to the R-Car CAN-FD driver. It includes several fixes for issues (some minor) detected while adding the support and during testing. More details can be found in the individual patches. Note that the last patch depends on "[PATCH 1/7] phy: Add devm_of_phy_optional_get() helper"[1]. This has been tested on the Renesas White-Hawk development board using cansend, candump, and canfdtest: - Channel 0 uses an NXP TJR1443AT CAN transceiver, and works fine, - Channels 1-7 use Microchip MCP2558FD-H/SN CAN transceivers (not mounted for channels 4-7), which do not need explicit description. While channel 1 works fine, channels 2-3 do not seem to work. Hence despite the new fixes, the test results are similar to what Ulrich Hecht reported for R-Car V3U on the Falcon development board before, i.e. only channels 0 and 1 work (FTR, [2] does not help). Whether this is a CAN-FD driver issue, a pin control issue, an IP core issue, or an SoC integration issue is still to be seen... Thanks for your comments! [1] https://lore.kernel.org/all/f53a1bcca637ceeafb04ce3540a605532d3bc34a.1674036164.git.geert+renesas@glider.be [2] commit e3e5bccc92446048 ("can: rcar_canfd: rcar_canfd_configure_afl_rules(): Fix Rx FIFO entry setting") in renesas-bsp/v5.10.147/rcar-5.2.0.rc3. Geert Uytterhoeven (12): dt-bindings: can: renesas,rcar-canfd: R-Car V3U is R-Car Gen4 dt-bindings: can: renesas,rcar-canfd: Document R-Car V4H support dt-bindings: can: renesas,rcar-canfd: Add transceiver support can: rcar_canfd: Fix R-Car V3U CAN mode selection can: rcar_canfd: Fix R-Car V3U GAFLCFG field accesses can: rcar_canfd: Abstract out DCFG address differences can: rcar_canfd: Add support for R-Car Gen4 can: rcar_canfd: Fix R-Car Gen4 DCFG.DSJW field width can: rcar_canfd: Fix R-Car Gen4 CFCC.CFTML field width can: rcar_canfd: Sort included header files can: rcar_canfd: Add helper variable dev can: rcar_canfd: Add transceiver support .../bindings/net/can/renesas,rcar-canfd.yaml | 16 +- drivers/net/can/rcar/rcar_canfd.c | 255 ++++++++++-------- 2 files changed, 148 insertions(+), 123 deletions(-)