Thread (1 message) 1 message, 1 author, 2016-06-01
DORMANTno replies

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

From: Gerd Hoffmann <kraxel@redhat.com>
Date: 2016-06-01 21:51:04
Also in: linux-arm-kernel, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

From: Eric Anholt <redacted>

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 <redacted>
---
 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
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