linux-kernel - [PATCH 4/4] ARM: bcm2835: Enable SDHOST by default.

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Message-Id: <1456527942-3045-5-git-send-email-eric@anholt.net>
Date:	Fri, 26 Feb 2016 15:05:42 -0800
From:	Eric Anholt <eric@...olt.net>
To:	linux-rpi-kernel@...ts.infradead.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	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>, devicetree@...r.kernel.org,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-mmc@...r.kernel.org, Eric Anholt <eric@...olt.net>
Subject: [PATCH 4/4] ARM: bcm2835: Enable SDHOST by default.

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 b8efd41..65d3594 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -65,10 +65,18 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&emmc_gpio48>;
 
-	status = "okay";
 	bus-width = <4>;
 };
 
+&sdhost {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhost_gpio48>;
+
+	bus-width = <4>;
+
+	status = "okay";
+};
+
 &pwm {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
-- 
2.7.0