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[0/7] RZN1 UART DMA support

Message ID 20220310161650.289387-1-miquel.raynal@bootlin.com (mailing list archive)
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Series RZN1 UART DMA support | expand

Message

Miquel Raynal March 10, 2022, 4:16 p.m. UTC 
Hello,

Support for the RZN1 DMA engine allows us adapt a little bit the 8250 DW
UART driver with to bring DMA support for this SoC.

This short series applies on top of the series bringing RZN1 DMA
support, currently on its v4, see [1]. Technically speaking, only the DT
patch needs to be applied after [1]. The other patches can come in at
any moment, because if no "dmas" property is provided in the DT, DMA
support will simply be ignored.

[1] https://lore.kernel.org/dmaengine/20220310155755.287294-1-miquel.raynal@bootlin.com/T/#mce6fec36e16dca560ab18935c273fcaf794a1cc4

Thanks,
Miquèl

Miquel Raynal (2):
  serial: 8250_dw: Provide the RZN1 CPR register value
  ARM: dts: r9a06g032: Fill the UART DMA properties

Phil Edworthy (5):
  serial: 8250_dma: Use ->tx_dma function pointer to start next DMA
  serial: 8250_dw: Move the per-device structure
  serial: 8250_dw: Use a fallback CPR value if not synthesized
  serial: 8250_dw: Add a dma_capable bit to the platform data
  serial: 8250_dw: Add support for RZ/N1 DMA

 arch/arm/boot/dts/r9a06g032.dtsi     |  15 ++++
 drivers/tty/serial/8250/8250_dma.c   |   4 +-
 drivers/tty/serial/8250/8250_dw.c    | 119 +++++++++++++++++++++++----
 drivers/tty/serial/8250/8250_dwlib.c |  17 +++-
 drivers/tty/serial/8250/8250_dwlib.h |  22 +++++
 5 files changed, 155 insertions(+), 22 deletions(-)