RZ/G2UL SMARC EVK has sci pins exposed through PMOD1 interface. On testing, found that irq handler, tx and rx is broken. This series fixes these issues. v3->v4: * Updated the fixes tag for patch#2 and patch#3 * Replaced sci_port->is_rz_sci with dev->dev.of_node as regshift are only needed for sh770x/sh7750/sh7760, which don't use DT yet. * Dropped is_rz_sci variable from struct sci_port. * Removed fixes tag from patch#4, as it is a feature enhancement to make tx fully functional on RZ/G2L alike SOCs. With previous patch#3, eventhough we get tx interrupts, still it is broken as characters entered on uart terminal is not visible except for the first character. * Updated commit header sci0 nodes->sci0 node for patch#5 * Removed PMOD USBUART reference and connection details as user can connect anything on that PMOD1 pins. * Renamed r9a07g043-smarc.dtso->r9a07g043-smarc-pmod.dtso * Dropped unused header file dt-bindings/gpio/gpio.h v2->v3: * Cced stable@xxxxxxxxxxxxxxx * Added Rx, Tx and Tx end interrupt handler patch. v1->v2: * Replaced the wrong fixes tag * Added a simpler check in sci_init_single() and added a check in probe to catch invalid interrupt count. Tested the SCI0 interface on RZ/G2UL by connecting to PMOD USBUART. 39: 0 GICv3 437 Level 1004d000.serial:rx err 40: 12 GICv3 438 Edge 1004d000.serial:rx full 41: 70 GICv3 439 Edge 1004d000.serial:tx empty 42: 18 GICv3 440 Level 1004d000.serial:tx end Biju Das (5): tty: serial: sh-sci: Fix transmit end interrupt handler tty: serial: sh-sci: Fix Rx on RZ/G2L SCI tty: serial: sh-sci: Fix Tx on SCI IP tty: serial: sh-sci: Add support for tx end interrupt handling arm64: dts: renesas: r9a07g044: Enable sci0 node using dt overlay arch/arm64/boot/dts/renesas/Makefile | 1 + .../dts/renesas/r9a07g043-smarc-pmod.dtso | 42 ++++++++++++ drivers/tty/serial/sh-sci.c | 66 +++++++++++++++++-- drivers/tty/serial/sh-sci.h | 3 + 4 files changed, 106 insertions(+), 6 deletions(-) create mode 100644 arch/arm64/boot/dts/renesas/r9a07g043-smarc-pmod.dtso -- 2.25.1
