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authorRoger Quadros <rogerq@ti.com>2016-04-07 12:25:39 +0200
committerTony Lindgren <tony@atomide.com>2016-04-12 23:32:02 +0200
commit63015d73f345a9196e910b84c3f329a22556bcf4 (patch)
treed8a7007a063a6cb34c3a46fefa8cd5fccc476123 /arch/arm/boot/dts/am335x-igep0033.dtsi
parentARM: dts: am437x: Provide NAND ready pin (diff)
downloadlinux-63015d73f345a9196e910b84c3f329a22556bcf4.tar.xz
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ARM: dts: am335x: Provide NAND ready pin
On these boards NAND ready pin status is avilable over GPMC_WAIT0 pin. For NAND we don't use GPMC wait pin monitoring but get the NAND Ready/Busy# status using GPIOlib. GPMC driver provides the WAIT0 pin status over GPIOlib. Read speed increases from 7869 KiB/ to 8875 KiB/s and write speed was unchanged at 5100 KiB/s. Measured using mtd_speedtest.ko on am335x-evm. Cc: Teresa Remmet <t.remmet@phytec.de> Cc: Ilya Ledvich <ilya@compulab.co.il> Cc: Yegor Yefremov <yegorslists@googlemail.com> Cc: Rostislav Lisovy <lisovy@gmail.com> Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts/am335x-igep0033.dtsi')
-rw-r--r--arch/arm/boot/dts/am335x-igep0033.dtsi1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am335x-igep0033.dtsi b/arch/arm/boot/dts/am335x-igep0033.dtsi
index 6c3a9bf3638a..df63484ef9b3 100644
--- a/arch/arm/boot/dts/am335x-igep0033.dtsi
+++ b/arch/arm/boot/dts/am335x-igep0033.dtsi
@@ -135,6 +135,7 @@
interrupt-parent = <&gpmc>;
interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */
<1 IRQ_TYPE_NONE>; /* termcount */
+ rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */
nand-bus-width = <8>;
ti,nand-ecc-opt = "bch8";
gpmc,device-width = <1>;