* [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF
@ 2012-06-19 2:23 Kuninori Morimoto
2012-06-19 4:36 ` Tetsuyuki Kobayashi
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Kuninori Morimoto @ 2012-06-19 2:23 UTC (permalink / raw)
To: linux-sh
It is possible to reduce CPU load if MMCIF used DMAEngine.
This patch enabled it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
arch/arm/mach-shmobile/board-kzm9g.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index d2feee1..ba80e72 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -197,6 +197,8 @@ static struct resource sh_mmcif_resources[] = {
static struct sh_mmcif_plat_data sh_mmcif_platdata = {
.ocr = MMC_VDD_165_195,
.caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
+ .slave_id_tx = SHDMA_SLAVE_MMCIF_TX,
+ .slave_id_rx = SHDMA_SLAVE_MMCIF_RX,
};
static struct platform_device mmc_device = {
--
1.7.5.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF
2012-06-19 2:23 [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF Kuninori Morimoto
@ 2012-06-19 4:36 ` Tetsuyuki Kobayashi
2012-06-19 4:59 ` Kuninori Morimoto
2012-06-19 8:26 ` Simon Horman
2 siblings, 0 replies; 4+ messages in thread
From: Tetsuyuki Kobayashi @ 2012-06-19 4:36 UTC (permalink / raw)
To: linux-sh
Hi, morimoto-san
After applying this patch, I can mount and read/write to eMMC.
Is it enough to test?
Or how do I know DMAEngine is working properly?
(2012/06/19 11:23), Kuninori Morimoto wrote:
> It is possible to reduce CPU load if MMCIF used DMAEngine.
> This patch enabled it.
>
> Signed-off-by: Kuninori Morimoto<kuninori.morimoto.gx@renesas.com>
> ---
> arch/arm/mach-shmobile/board-kzm9g.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
> index d2feee1..ba80e72 100644
> --- a/arch/arm/mach-shmobile/board-kzm9g.c
> +++ b/arch/arm/mach-shmobile/board-kzm9g.c
> @@ -197,6 +197,8 @@ static struct resource sh_mmcif_resources[] = {
> static struct sh_mmcif_plat_data sh_mmcif_platdata = {
> .ocr = MMC_VDD_165_195,
> .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
> + .slave_id_tx = SHDMA_SLAVE_MMCIF_TX,
> + .slave_id_rx = SHDMA_SLAVE_MMCIF_RX,
> };
>
> static struct platform_device mmc_device = {
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF
2012-06-19 2:23 [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF Kuninori Morimoto
2012-06-19 4:36 ` Tetsuyuki Kobayashi
@ 2012-06-19 4:59 ` Kuninori Morimoto
2012-06-19 8:26 ` Simon Horman
2 siblings, 0 replies; 4+ messages in thread
From: Kuninori Morimoto @ 2012-06-19 4:59 UTC (permalink / raw)
To: linux-sh
Hi Kobayashi-san
Thank you for testing patch
> After applying this patch, I can mount and read/write to eMMC.
> Is it enough to test?
> Or how do I know DMAEngine is working properly?
Can you check /proc/interrupts ?
Did your dmaeXX increment ?
Best regards
---
Kuninori Morimoto
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF
2012-06-19 2:23 [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF Kuninori Morimoto
2012-06-19 4:36 ` Tetsuyuki Kobayashi
2012-06-19 4:59 ` Kuninori Morimoto
@ 2012-06-19 8:26 ` Simon Horman
2 siblings, 0 replies; 4+ messages in thread
From: Simon Horman @ 2012-06-19 8:26 UTC (permalink / raw)
To: linux-sh
On Mon, Jun 18, 2012 at 07:23:53PM -0700, Kuninori Morimoto wrote:
> It is possible to reduce CPU load if MMCIF used DMAEngine.
> This patch enabled it.
>
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-06-19 8:26 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2012-06-19 2:23 [PATCH 2/4] ARM: shmobile: kzm9g: enable DMAEngine on MMCIF Kuninori Morimoto
2012-06-19 4:36 ` Tetsuyuki Kobayashi
2012-06-19 4:59 ` Kuninori Morimoto
2012-06-19 8:26 ` Simon Horman
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