From: khiem.nguyen.xt@renesas•com (Khiem Nguyen)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 0/4] ARM: shmobile: koelsch legacy: Enable DMA for QSPI
Date: Tue, 03 Jun 2014 13:29:47 +0900 [thread overview]
Message-ID: <538D4F3B.6080806@renesas.com> (raw)
In-Reply-To: <1401716424-29740-1-git-send-email-geert+renesas@glider.be>
Hi Geert,
Thanks for the patch.
It seems that patch 1 and patch 2 are to support DMA in general,
while patch 3 and patch 4 are to support DMA for QSPI.
So, I think it should be separated into 2 patch series.
How do you think about it ?
Best regards,
KHIEM Nguyen
On 6/2/2014 10:40 PM, Geert Uytterhoeven wrote:
> This patch series enables DMA support for QSPI on r8a7791/koelsch legacy.
> It's independent from the series "ARM: shmobile: koelsch reference: Enable
> DMA for QSPI".
>
> [2/4] was written by Morimoto-san for LTSI 3.10, and forward ported by me.
>
> This was tested on r8a7791/koelsch.
>
> Performance figures for reading from a QSPI FLASH driven at 24.375 MHz are:
> - Single: 1.1 Mbps PIO, 23 Mbps DMA
> - Dual : 12.7 Mbps PIO, 48 Mbps DMA
> - Quad : 13 Mbps PIO, 70 Mbps DMA
>
> Thanks for your comments!
>
> [1/4] ARM: shmobile: r8a7791: Add SYS-DMAC clocks
> [2/4] ARM: shmobile: r8a7791: Add SYS-DMAC support
> [3/4] ARM: shmobile: r8a7791: Add QSPI DMA support
> [4/4] ARM: shmobile: koelsch legacy: Enable DMA for QSPI
>
> arch/arm/mach-shmobile/board-koelsch.c | 2 +
> arch/arm/mach-shmobile/clock-r8a7791.c | 6 +-
> arch/arm/mach-shmobile/include/mach/r8a7791.h | 7 +++
> arch/arm/mach-shmobile/setup-r8a7791.c | 82 +++++++++++++++++++++++++++
> 4 files changed, 96 insertions(+), 1 deletion(-)
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sh" in
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prev parent reply other threads:[~2014-06-03 4:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-02 13:40 [PATCH 0/4] ARM: shmobile: koelsch legacy: Enable DMA for QSPI Geert Uytterhoeven
2014-06-02 13:40 ` [PATCH 1/4] ARM: shmobile: r8a7791: Add SYS-DMAC clocks Geert Uytterhoeven
2014-06-02 18:13 ` Sergei Shtylyov
2014-06-03 7:04 ` Geert Uytterhoeven
2014-06-03 23:26 ` Simon Horman
2014-06-02 13:40 ` [PATCH 2/4] ARM: shmobile: r8a7791: Add SYS-DMAC support Geert Uytterhoeven
2014-06-02 13:40 ` [PATCH 3/4] ARM: shmobile: r8a7791: Add QSPI DMA support Geert Uytterhoeven
2014-06-02 13:40 ` [PATCH 4/4] ARM: shmobile: koelsch legacy: Enable DMA for QSPI Geert Uytterhoeven
2014-06-03 4:29 ` Khiem Nguyen [this message]
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