* [PATCH] ARM: dts: rockchip: Set sdmmc frequency at boot time
@ 2016-11-04 18:07 Paweł Jarosz
2016-11-07 15:16 ` Heiko Stuebner
0 siblings, 1 reply; 2+ messages in thread
From: Paweł Jarosz @ 2016-11-04 18:07 UTC (permalink / raw)
To: heiko-4mtYJXux2i+zQB+pC5nmwQ, robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
mark.rutland-5wv7dgnIgG8, linux-I+IVW8TIWO2tmTQ+vhA3Yw,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
Currently driver leaves sdmmc frequency at its default. So lets set this
to 50MHz.
This gives us performance boost in mmc transfers.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
---
arch/arm/boot/dts/rk3066a.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi
index f3a5109..fc8dcc7 100644
--- a/arch/arm/boot/dts/rk3066a.dtsi
+++ b/arch/arm/boot/dts/rk3066a.dtsi
@@ -636,6 +636,8 @@
};
&mmc0 {
+ clock-frequency = <50000000>;
+ max-frequency = <50000000>;
pinctrl-names = "default";
pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_cd &sd0_bus4>;
};
--
2.7.4
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* Re: [PATCH] ARM: dts: rockchip: Set sdmmc frequency at boot time
2016-11-04 18:07 [PATCH] ARM: dts: rockchip: Set sdmmc frequency at boot time Paweł Jarosz
@ 2016-11-07 15:16 ` Heiko Stuebner
0 siblings, 0 replies; 2+ messages in thread
From: Heiko Stuebner @ 2016-11-07 15:16 UTC (permalink / raw)
To: Paweł Jarosz
Cc: mark.rutland-5wv7dgnIgG8,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A, linux-I+IVW8TIWO2tmTQ+vhA3Yw
Am Freitag, 4. November 2016, 19:07:31 CET schrieb Paweł Jarosz:
> Currently driver leaves sdmmc frequency at its default. So lets set this
> to 50MHz.
> This gives us performance boost in mmc transfers.
>
> Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
applied to my dts32 branch for 4.10
Thanks
Heiko
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