On Thu, Aug 07, 2014 at 10:27:21AM +0200, Geert Uytterhoeven wrote: > Hi Simon, > > On Thu, Aug 7, 2014 at 2:41 AM, Simon Horman <horms@xxxxxxxxxxxx> wrote: > > On Thu, Aug 07, 2014 at 09:39:08AM +0900, Simon Horman wrote: > >> On Thu, Aug 07, 2014 at 09:37:56AM +0900, Simon Horman wrote: > >> > On Wed, Aug 06, 2014 at 02:59:06PM +0200, Geert Uytterhoeven wrote: > >> > > Add a DMA property to the QSPI node > >> > > > >> > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > >> > > Cc: devicetree@xxxxxxxxxxxxxxx > >> > > --- > >> > > This depends on "[PATCH v2 8/8] ARM: shmobile: r8a7791: Add DMAC devices > >> > > to DT" of series "[PATCH v2 0/8] R-Car Gen2 DMA Controller driver". > >> > > >> > Hi Geert, Hi Laurent, > >> > > >> > Am I correct in assuming that with this patch applied things > >> > will continue to work the old way until the patch above applied > >> > to the same tree and from there on the user will get the new behaviour? > >> > > >> > If so I think that I can take this patch as although the driver hasn't been > >> > merged the relevant bindings were added to the subsystem maintainers tree > >> > by "dmaengine: rcar-dmac: Add device tree bindings documentation" and are > >> > available in linux-next. > >> > > >> > Likewise for "[v3] ARM: shmobile: r8a7791 dtsi: Enable DMA for MSIO". > >> > >> ... and "ARM: shmobile: r8a7790 dtsi: Enable DMA for QSPI" > > > > ... and "ARM: shmobile: r8a7790 dtsi: Enable DMA for MSIO" > > > > and any other similar patches I didn't list above :) > > Yes[*]. > > If rcar-dma is not available, drivers fall back to PIO, cfr. for rspi: > > -renesas_spi e6b10000.spi: DMA available > +renesas_spi e6b10000.spi: dma_request_slave_channel_compat failed > +renesas_spi e6b10000.spi: DMA not available, using PIO > renesas_spi e6b10000.spi: registered master spi0 > spi spi0.0: setup mode 0, 8 bits/w, 30000000 Hz max --> 0 > m25p80 spi0.0: s25fl512s (65536 Kbytes) > 3 ofpart partitions found on MTD device spi0.0 > Creating 3 MTD partitions on "spi0.0": > 0x000000000000-0x000000080000 : "loader" > 0x000000080000-0x000000100000 : "bootenv" > 0x000000100000-0x000004000000 : "data" > renesas_spi e6b10000.spi: registered child spi0.0 > > and sh-msiof: > > -spi_sh_msiof e6e20000.spi: DMA available > +spi_sh_msiof e6e20000.spi: dma_request_slave_channel_compat failed > +spi_sh_msiof e6e20000.spi: DMA not available, using PIO > spi_sh_msiof e6e20000.spi: registered master spi1 > spi spi1.0: setup mode 3, 8 bits/w, 6000000 Hz max --> 0 > spi_sh_msiof e6e20000.spi: registered child spi1.0 > > and everything still works, but slower. > > [*] If the individual DMA slave drivers properly handle DMA request > failures. If they don't, they will already fail now, as there is no DMA > platform configuration without the dmas/dma-names properties > (ignoring Magnus' DMA prototypes using auxdata, as DT is the way > forward). Thanks, I have queued up the 4 shmobile patches for v3.18 with Laurent's Ack. They should appear in the devel branch of the renesas tree some time today. On Thu, Aug 07, 2014 at 02:16:47AM +0200, Laurent Pinchart wrote: > Hi Geert, > > Thank you for the patches. > > On Wednesday 06 August 2014 14:58:57 Geert Uytterhoeven wrote: > > Hi Mark, Simon, > > > > Here's a series of Renesas RSPI/QSPI and SH-MSIOF SPI driver updates. > > I grouped them in three parts: > > - [1-5] are for the rspi driver (Mark), > > - [6-8] are for the sh-msiof driver (Mark), > > - [9-12] are for the R-Car Gen2 DTSes (Simon). > > For everything but 06/12, > > Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> [snip] -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
