From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754220AbcBWQhq (ORCPT ); Tue, 23 Feb 2016 11:37:46 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:33056 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753499AbcBWQho (ORCPT ); Tue, 23 Feb 2016 11:37:44 -0500 From: Roger Quadros To: CC: , , , , , , , , Roger Quadros Subject: [PATCH v7 4/9] ARM: dts: am437x: Disable wait pin monitoring for NAND Date: Tue, 23 Feb 2016 18:37:20 +0200 Message-ID: <1456245445-31824-5-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1456245445-31824-1-git-send-email-rogerq@ti.com> References: <1456245445-31824-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The NAND Ready/Busy# line is connected to GPMC_WAIT0 pin and can't be used for wait state insertion for NAND I/O read/write. So disable read/write wait monitoring as per Reference Manual's suggestion [1]. [1] AM437x TRM: SPRUHL7D: 9.1.3.3.12.2 NAND Device-Ready Pin Signed-off-by: Roger Quadros --- arch/arm/boot/dts/am437x-cm-t43.dts | 5 ----- arch/arm/boot/dts/am437x-gp-evm.dts | 2 -- arch/arm/boot/dts/am43x-epos-evm.dts | 2 -- 3 files changed, 9 deletions(-) diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts index 4aa5357..9551c47 100644 --- a/arch/arm/boot/dts/am437x-cm-t43.dts +++ b/arch/arm/boot/dts/am437x-cm-t43.dts @@ -170,17 +170,12 @@ gpmc,access-ns = <64>; gpmc,rd-cycle-ns = <82>; gpmc,wr-cycle-ns = <82>; - gpmc,wait-on-read = "true"; - gpmc,wait-on-write = "true"; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>; - gpmc,wait-monitoring-ns = <0>; gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; - gpmc,wait-pin = <0>; - #address-cells = <1>; #size-cells = <1>; /* MTD partition table */ diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index 7081b88..b3cfedb 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -837,11 +837,9 @@ gpmc,access-ns = <30>; gpmc,rd-cycle-ns = <40>; gpmc,wr-cycle-ns = <40>; - gpmc,wait-pin = <0>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>; - gpmc,wait-monitoring-ns = <0>; gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; /* MTD partition table */ diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts index 12b08cf..b1f2bd6 100644 --- a/arch/arm/boot/dts/am43x-epos-evm.dts +++ b/arch/arm/boot/dts/am43x-epos-evm.dts @@ -586,11 +586,9 @@ gpmc,access-ns = <30>; /* tCEA + 4*/ gpmc,rd-cycle-ns = <40>; gpmc,wr-cycle-ns = <40>; - gpmc,wait-pin = <0>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>; - gpmc,wait-monitoring-ns = <0>; gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; /* MTD partition table */ -- 2.5.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Quadros Subject: [PATCH v7 4/9] ARM: dts: am437x: Disable wait pin monitoring for NAND Date: Tue, 23 Feb 2016 18:37:20 +0200 Message-ID: <1456245445-31824-5-git-send-email-rogerq@ti.com> References: <1456245445-31824-1-git-send-email-rogerq@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1456245445-31824-1-git-send-email-rogerq@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: tony@atomide.com Cc: computersforpeace@gmail.com, ezequiel@vanguardiasur.com.ar, javier@dowhile0.org, fcooper@ti.com, nsekhar@ti.com, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros List-Id: devicetree@vger.kernel.org The NAND Ready/Busy# line is connected to GPMC_WAIT0 pin and can't be used for wait state insertion for NAND I/O read/write. So disable read/write wait monitoring as per Reference Manual's suggestion [1]. [1] AM437x TRM: SPRUHL7D: 9.1.3.3.12.2 NAND Device-Ready Pin Signed-off-by: Roger Quadros --- arch/arm/boot/dts/am437x-cm-t43.dts | 5 ----- arch/arm/boot/dts/am437x-gp-evm.dts | 2 -- arch/arm/boot/dts/am43x-epos-evm.dts | 2 -- 3 files changed, 9 deletions(-) diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts index 4aa5357..9551c47 100644 --- a/arch/arm/boot/dts/am437x-cm-t43.dts +++ b/arch/arm/boot/dts/am437x-cm-t43.dts @@ -170,17 +170,12 @@ gpmc,access-ns = <64>; gpmc,rd-cycle-ns = <82>; gpmc,wr-cycle-ns = <82>; - gpmc,wait-on-read = "true"; - gpmc,wait-on-write = "true"; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>; - gpmc,wait-monitoring-ns = <0>; gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; - gpmc,wait-pin = <0>; - #address-cells = <1>; #size-cells = <1>; /* MTD partition table */ diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index 7081b88..b3cfedb 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -837,11 +837,9 @@ gpmc,access-ns = <30>; gpmc,rd-cycle-ns = <40>; gpmc,wr-cycle-ns = <40>; - gpmc,wait-pin = <0>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>; - gpmc,wait-monitoring-ns = <0>; gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; /* MTD partition table */ diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts index 12b08cf..b1f2bd6 100644 --- a/arch/arm/boot/dts/am43x-epos-evm.dts +++ b/arch/arm/boot/dts/am43x-epos-evm.dts @@ -586,11 +586,9 @@ gpmc,access-ns = <30>; /* tCEA + 4*/ gpmc,rd-cycle-ns = <40>; gpmc,wr-cycle-ns = <40>; - gpmc,wait-pin = <0>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>; - gpmc,wait-monitoring-ns = <0>; gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; /* MTD partition table */ -- 2.5.0