From: "Paweł Jarosz" <paweljarosz3691-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: [PATCH] ARM: dts: rockchip: Set sdmmc frequency at boot time
Date: Fri, 4 Nov 2016 19:07:31 +0100 [thread overview]
Message-ID: <20161104180730.GA14508@vaio-ubuntu> (raw)
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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next reply other threads:[~2016-11-04 18:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 18:07 Paweł Jarosz [this message]
2016-11-07 15:16 ` [PATCH] ARM: dts: rockchip: Set sdmmc frequency at boot time Heiko Stuebner
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