linux-kernel - [PATCH 23/32] ARM: bcm2835: Enable SDHOST by default.

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Date:	Wed,  1 Jun 2016 23:43:32 +0200
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	linux-rpi-kernel@...ts.infradead.org
Cc:	Eric Anholt <eric@...olt.net>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@...linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
	DEVICE TREE BINDINGS),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM PORT),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 23/32] ARM: bcm2835: Enable SDHOST by default.

From: Eric Anholt <eric@...olt.net>

This improves read speed on my SD card (as reported by hdparm -t) from
10.15MB/sec to 16.70MB/sec.  Once we add slave DMA, we can get to
18.45MB/sec.

Signed-off-by: Eric Anholt <eric@...olt.net>
---
 arch/arm/boot/dts/bcm2835-rpi.dtsi | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index a207693..97496cd 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -65,8 +65,16 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&emmc_gpio48>;
 
+	bus-width = <4>;
+};
+
+&sdhost {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhost_gpio48>;
+
+	bus-width = <4>;
+
 	status = "okay";
-	bus-width = <4>;
 };
 
 &pwm {
-- 
1.8.3.1