From: Eric Anholt <e...@anholt.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 <e...@anholt.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