From 99a4101182d6107af869fb6d41cb375c717c66ad Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 7 Apr 2016 13:25:38 +0300 Subject: [PATCH] ARM: dts: am437x: 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 16516 KiB/ to 18813 KiB/s and write speed was unchanged at 9941 KiB/s. Measured using mtd_speedtest.ko. Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am437x-gp-evm.dts | 1 + arch/arm/boot/dts/am43x-epos-evm.dts | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index 95ec82a77e67..5bcd3aa025bc 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -817,6 +817,7 @@ interrupt-parent = <&gpmc>; interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */ <1 IRQ_TYPE_NONE>; /* termcount */ + rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */ ti,nand-ecc-opt = "bch16"; ti,elm-id = <&elm>; nand-bus-width = <8>; diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts index d7978236ccad..965d548037ef 100644 --- a/arch/arm/boot/dts/am43x-epos-evm.dts +++ b/arch/arm/boot/dts/am43x-epos-evm.dts @@ -568,6 +568,7 @@ interrupt-parent = <&gpmc>; interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */ <1 IRQ_TYPE_NONE>; /* termcount */ + rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */ ti,nand-ecc-opt = "bch16"; ti,elm-id = <&elm>; nand-bus-width = <8>; -- 2.39.5