[v3,21/27] ARM: dts: dra7x-evm: Provide NAND ready pin

Message ID 1442588029-13769-22-git-send-email-rogerq@ti.com
State New
Headers show

Commit Message

Roger Quadros Sept. 18, 2015, 2:53 p.m.
On these boards NAND ready pin status is avilable over
GPMC_WAIT0 pin.

Read speed increases from 13768 KiB/ to 17246 KiB/s.
Write speed was unchanged at 7123 KiB/s.
Measured using mtd_speedtest.ko.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/dra7-evm.dts  | 1 +
 arch/arm/boot/dts/dra72-evm.dts | 1 +
 2 files changed, 2 insertions(+)

Patch

diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 8a31161..4760562 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -591,6 +591,7 @@ 
 		reg = <0 0 4>;		/* device IO registers */
 		interrupt-parent = <&crossbar_mpu>;
 		interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
+		ready-gpio = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 pin */
 		ti,nand-ecc-opt = "bch8";
 		ti,elm-id = <&elm>;
 		nand-bus-width = <16>;
diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
index 245f5f9..a11a646 100644
--- a/arch/arm/boot/dts/dra72-evm.dts
+++ b/arch/arm/boot/dts/dra72-evm.dts
@@ -405,6 +405,7 @@ 
 		reg = <0 0 4>;		/* device IO registers */
 		interrupt-parent = <&crossbar_mpu>;
 		interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
+		ready-gpio = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 pin */
 		ti,nand-ecc-opt = "bch8";
 		ti,elm-id = <&elm>;
 		nand-bus-width = <16>;