[PATCH v3 SPI for-next 0/3] DMA Support for SPI in PCI1xxxx

From: Thangaraj Samynathan <thangaraj.s@microchip.com>
To: <broonie@kernel.org>, <linux-spi@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Cc: <UNGLinuxDriver@microchip.com>,
	<kumaravel.thiagarajan@microchip.com>,
	<tharunkumar.pasumarthi@microchip.com>
Subject: [PATCH v3 SPI for-next 0/3] DMA Support for SPI in PCI1xxxx
Date: Wed, 7 Feb 2024 13:36:19 +0530	[thread overview]
Message-ID: <20240207080621.30742-1-thangaraj.s@microchip.com> (raw)

This series of patch is to add DMA Support that improves SPI Performance
in PCI1xxxx. With DMA Support in 20MHz clock, the performance is
improved from 6Mbps to 17Mbps.

v3:
-Merged Tx and Rx DMA patches into one to avoid unidirectional dma.
-Changed naming from DMA read and write functions to from_io and to_io
to avoid confusion between DMA and SPI Controller operations.

v2:
-Added can_dma operation, so that the core can do all DMA mapping and
switch between, DMA and PIO operation by itself.
-Added error messages for syslock acquire failure and DMA init failures.

v1:
-Initial Submission

Thangaraj Samynathan (2):
  spi: mchp-pci1xxxx: Add support for DMA in SPI
  spi: mchp-pci1xxxx: DMA support for copying data to and from  SPI Buf

 drivers/spi/spi-pci1xxxx.c | 510 +++++++++++++++++++++++++++++++++++--
 1 file changed, 483 insertions(+), 27 deletions(-)

-- 
2.25.1