From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: Serge Semin <fancer.lancer@gmail.com>,
Mark Brown <broonie@kernel.org>,
Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>,
Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>,
Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Arnd Bergmann <arnd@arndb.de>, Feng Tang <feng.tang@intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rob Herring <robh+dt@kernel.org>, <linux-mips@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-spi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 01/16] spi: dw: Set xfer effective_speed_hz
Date: Fri, 29 May 2020 12:49:19 +0300 [thread overview]
Message-ID: <20200529094919.uw3fodztc3vvnj6a@mobilestation> (raw)
In-Reply-To: <afdf414a-df95-b130-85e8-cda5bf4e9405@cogentembedded.com>
On Fri, May 29, 2020 at 11:49:12AM +0300, Sergei Shtylyov wrote:
> Hello!
>
> On 29.05.2020 6:58, Serge Semin wrote:
>
> > Seeing DW APB SSI controller doesn't support setting the exactly
> > requested SPI bus frequency, but only a rounded frequency determined
> > by means of the odd-numbered half-worded reference clock divider,
> > it would be good tune the SPI core up and initialize the current
> ^ to?
Thanks! I'll fix it in the next patchset version.
-Sergey
>
> > transfer effective_speed_hz. By doing so the core will be able to
> > execute the xfer-related delays with better accuracy.
> >
> > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> > Cc: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>
> > Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>
> > Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> > Cc: Arnd Bergmann <arnd@arndb.de>
> > Cc: Feng Tang <feng.tang@intel.com>
> > Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: linux-mips@vger.kernel.org
> > Cc: devicetree@vger.kernel.org
> [...]
>
> MBR, Sergei
next prev parent reply other threads:[~2020-05-29 9:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 3:58 [PATCH v5 00/16] spi: dw: Add generic DW DMA controller support Serge Semin
2020-05-29 3:58 ` [PATCH v5 01/16] spi: dw: Set xfer effective_speed_hz Serge Semin
2020-05-29 8:49 ` Sergei Shtylyov
2020-05-29 9:49 ` Serge Semin [this message]
2020-05-29 3:59 ` [PATCH v5 02/16] spi: dw: Return any value retrieved from the dma_transfer callback Serge Semin
2020-05-29 3:59 ` [PATCH v5 03/16] spi: dw: Locally wait for the DMA transactions completion Serge Semin
2020-05-29 7:55 ` Andy Shevchenko
2020-05-29 8:12 ` Serge Semin
2020-05-29 9:26 ` Andy Shevchenko
2020-05-29 9:56 ` Serge Semin
2020-05-29 3:59 ` [PATCH v5 04/16] spi: dw: Add SPI Tx-done wait method to DMA-based transfer Serge Semin
2020-05-29 3:59 ` [PATCH v5 05/16] spi: dw: Add SPI Rx-done " Serge Semin
2020-05-29 9:46 ` Andy Shevchenko
2020-05-29 10:13 ` Serge Semin
2020-05-29 10:20 ` Andy Shevchenko
2020-05-29 3:59 ` [PATCH v5 06/16] spi: dw: Parameterize the DMA Rx/Tx burst length Serge Semin
2020-05-29 3:59 ` [PATCH v5 07/16] spi: dw: Use DMA max burst to set the request thresholds Serge Semin
2020-05-29 3:59 ` [PATCH v5 08/16] spi: dw: Fix Rx-only DMA transfers Serge Semin
2020-05-29 3:59 ` [PATCH v5 09/16] spi: dw: Add core suffix to the DW APB SSI core source file Serge Semin
2020-05-29 3:59 ` [PATCH v5 10/16] spi: dw: Move Non-DMA code to the DW PCIe-SPI driver Serge Semin
2020-05-29 3:59 ` [PATCH v5 11/16] spi: dw: Remove DW DMA code dependency from DW_DMAC_PCI Serge Semin
2020-05-29 3:59 ` [PATCH v5 12/16] spi: dw: Add DW SPI DMA/PCI/MMIO dependency on the DW SPI core Serge Semin
2020-05-29 3:59 ` [PATCH v5 13/16] spi: dw: Cleanup generic DW DMA code namings Serge Semin
2020-05-29 3:59 ` [PATCH v5 14/16] spi: dw: Add DMA support to the DW SPI MMIO driver Serge Semin
2020-05-29 3:59 ` [PATCH v5 15/16] spi: dw: Use regset32 DebugFS method to create regdump file Serge Semin
2020-05-29 3:59 ` [PATCH v5 16/16] dt-bindings: spi: Convert DW SPI binding to DT schema Serge Semin
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