* [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
@ 2020-02-19 13:11 ` Oleksandr Suvorov
0 siblings, 0 replies; 4+ messages in thread
From: Oleksandr Suvorov @ 2020-02-19 13:11 UTC (permalink / raw)
To: devicetree@vger.kernel.org
Cc: Mark Rutland, Marcel Ziswiler, Shawn Guo, Sascha Hauer,
linux-kernel@vger.kernel.org, Stefan Agner, Oleksandr Suvorov,
Philippe Schenker, Igor Opanyuk, Rob Herring, NXP Linux Team,
Pengutronix Kernel Team, Fabio Estevam,
linux-arm-kernel@lists.infradead.org
SD/MMC on Colibri iMX7S/D modules successfully support
200Mhz frequency in HS200 mode.
Removing the unnecessary max-frequency limit significantly
increases the performance:
== before fix ====
root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
Timing buffered disk reads: 252 MB in 3.02 seconds = 83.54 MB/sec
==================
=== after fix ====
root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
Timing buffered disk reads: 408 MB in 3.00 seconds = 135.94 MB/sec
==================
Fixes: f928a4a377e4 ("ARM: dts: imx7: add Toradex Colibri iMX7D 1GB (eMMC) support")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
---
Changes in v2:
- keep the Fixes tag in the single line
arch/arm/boot/dts/imx7-colibri.dtsi | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi
index d05be3f0e2a7..04717cf69db0 100644
--- a/arch/arm/boot/dts/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri.dtsi
@@ -336,7 +336,6 @@ &usdhc3 {
assigned-clock-rates = <400000000>;
bus-width = <8>;
fsl,tuning-step = <2>;
- max-frequency = <100000000>;
vmmc-supply = <®_module_3v3>;
vqmmc-supply = <®_DCDC3>;
non-removable;
--
2.24.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
@ 2020-02-19 13:11 ` Oleksandr Suvorov
0 siblings, 0 replies; 4+ messages in thread
From: Oleksandr Suvorov @ 2020-02-19 13:11 UTC (permalink / raw)
To: devicetree@vger.kernel.org
Cc: Marcel Ziswiler, Igor Opanyuk, Philippe Schenker,
Oleksandr Suvorov, Fabio Estevam, Mark Rutland, NXP Linux Team,
Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Shawn Guo,
Stefan Agner, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
SD/MMC on Colibri iMX7S/D modules successfully support
200Mhz frequency in HS200 mode.
Removing the unnecessary max-frequency limit significantly
increases the performance:
== before fix ====
root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
Timing buffered disk reads: 252 MB in 3.02 seconds = 83.54 MB/sec
==================
=== after fix ====
root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
Timing buffered disk reads: 408 MB in 3.00 seconds = 135.94 MB/sec
==================
Fixes: f928a4a377e4 ("ARM: dts: imx7: add Toradex Colibri iMX7D 1GB (eMMC) support")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
---
Changes in v2:
- keep the Fixes tag in the single line
arch/arm/boot/dts/imx7-colibri.dtsi | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi
index d05be3f0e2a7..04717cf69db0 100644
--- a/arch/arm/boot/dts/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri.dtsi
@@ -336,7 +336,6 @@ &usdhc3 {
assigned-clock-rates = <400000000>;
bus-width = <8>;
fsl,tuning-step = <2>;
- max-frequency = <100000000>;
vmmc-supply = <®_module_3v3>;
vqmmc-supply = <®_DCDC3>;
non-removable;
--
2.24.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
2020-02-19 13:11 ` Oleksandr Suvorov
@ 2020-02-24 3:42 ` Shawn Guo
-1 siblings, 0 replies; 4+ messages in thread
From: Shawn Guo @ 2020-02-24 3:42 UTC (permalink / raw)
To: Oleksandr Suvorov
Cc: Mark Rutland, devicetree@vger.kernel.org, Marcel Ziswiler,
Sascha Hauer, linux-kernel@vger.kernel.org, Stefan Agner,
Philippe Schenker, Igor Opanyuk, Rob Herring, NXP Linux Team,
Pengutronix Kernel Team, Fabio Estevam,
linux-arm-kernel@lists.infradead.org
On Wed, Feb 19, 2020 at 01:11:24PM +0000, Oleksandr Suvorov wrote:
> SD/MMC on Colibri iMX7S/D modules successfully support
> 200Mhz frequency in HS200 mode.
>
> Removing the unnecessary max-frequency limit significantly
> increases the performance:
>
> == before fix ====
> root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
> /dev/mmcblk0:
> Timing buffered disk reads: 252 MB in 3.02 seconds = 83.54 MB/sec
> ==================
>
> === after fix ====
> root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
> /dev/mmcblk0:
> Timing buffered disk reads: 408 MB in 3.00 seconds = 135.94 MB/sec
> ==================
>
> Fixes: f928a4a377e4 ("ARM: dts: imx7: add Toradex Colibri iMX7D 1GB (eMMC) support")
> Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Applied, thanks.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
@ 2020-02-24 3:42 ` Shawn Guo
0 siblings, 0 replies; 4+ messages in thread
From: Shawn Guo @ 2020-02-24 3:42 UTC (permalink / raw)
To: Oleksandr Suvorov
Cc: devicetree@vger.kernel.org, Marcel Ziswiler, Igor Opanyuk,
Philippe Schenker, Fabio Estevam, Mark Rutland, NXP Linux Team,
Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Stefan Agner,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
On Wed, Feb 19, 2020 at 01:11:24PM +0000, Oleksandr Suvorov wrote:
> SD/MMC on Colibri iMX7S/D modules successfully support
> 200Mhz frequency in HS200 mode.
>
> Removing the unnecessary max-frequency limit significantly
> increases the performance:
>
> == before fix ====
> root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
> /dev/mmcblk0:
> Timing buffered disk reads: 252 MB in 3.02 seconds = 83.54 MB/sec
> ==================
>
> === after fix ====
> root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
> /dev/mmcblk0:
> Timing buffered disk reads: 408 MB in 3.00 seconds = 135.94 MB/sec
> ==================
>
> Fixes: f928a4a377e4 ("ARM: dts: imx7: add Toradex Colibri iMX7D 1GB (eMMC) support")
> Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Applied, thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-02-24 3:42 UTC | newest]
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2020-02-19 13:11 [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc Oleksandr Suvorov
2020-02-19 13:11 ` Oleksandr Suvorov
2020-02-24 3:42 ` Shawn Guo
2020-02-24 3:42 ` Shawn Guo
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