[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20220821203719.gxjxo24stzcf3a2x@mobilestation>
Date: Sun, 21 Aug 2022 23:37:19 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Sudip Mukherjee <sudip.mukherjee@...ive.com>
Cc: Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
greentime.hu@...ive.com, jude.onyenegecha@...ive.com,
william.salmon@...ive.com, adnan.chowdhury@...ive.com,
ben.dooks@...ive.com, linux-spi@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
jeegar.lakhani@...ive.com
Subject: Re: [PATCH 00/11] Add support for enhanced SPI for Designware SPI
controllers
Hi Sudip
On Tue, Aug 02, 2022 at 06:57:44PM +0100, Sudip Mukherjee wrote:
> Some Synopsys SSI controllers support enhanced SPI which includes
> Dual mode, Quad mode and Octal mode. DWC_ssi includes clock stretching
> feature in enhanced SPI modes which can be used to prevent FIFO underflow
> and overflow conditions while transmitting or receiving the data respectively.
> This is only tested on controller version 1.03a.
>
> Ben Dooks (1):
> spi: dw-apb-ssi: add generic 1.03a version
>
> Sudip Mukherjee (10):
> spi: dw: define capability for enhanced spi
> spi: dw: add check for support of dual/quad/octal
> spi: dw: define spi_frf for dual/quad/octal modes
> spi: dw: use TMOD_RO to read in enhanced spi modes
> spi: dw: define SPI_CTRLR0 register and its fields
> spi: dw: update SPI_CTRLR0 register
> spi: dw: update NDF while writing in enhanced spi mode
> spi: dw: update buffer for enhanced spi mode
> spi: dw: prepare the transfer routine for enhanced mode
> spi: dw: initialize dwc-ssi-1.03a controller
Thanks for the very useful series. I've started reviewing it and will
share all my comments tomorrow.
-Sergey
>
> .../bindings/spi/snps,dw-apb-ssi.yaml | 1 +
> drivers/spi/spi-dw-core.c | 288 ++++++++++++++++--
> drivers/spi/spi-dw-mmio.c | 10 +
> drivers/spi/spi-dw.h | 19 ++
> 4 files changed, 291 insertions(+), 27 deletions(-)
>
> --
> 2.30.2
>
Powered by blists - more mailing lists