From: Roger Quadros <rogerq@ti.com>
To: <tony@atomide.com>, <computersforpeace@gmail.com>
Cc: <dwmw2@infradead.org>, <ezequiel@vanguardiasur.com.ar>,
<javier@dowhile0.org>, <fcooper@ti.com>, <nsekhar@ti.com>,
<linux-mtd@lists.infradead.org>, <linux-omap@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Roger Quadros <rogerq@ti.com>
Subject: [PATCH v5 21/26] ARM: dts: am437x: Provide NAND ready pin
Date: Fri, 19 Feb 2016 23:15:43 +0200 [thread overview]
Message-ID: <1455916548-3441-22-git-send-email-rogerq@ti.com> (raw)
In-Reply-To: <1455916548-3441-1-git-send-email-rogerq@ti.com>
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 <rogerq@ti.com>
---
arch/arm/boot/dts/am437x-gp-evm.dts | 3 +--
arch/arm/boot/dts/am43x-epos-evm.dts | 3 +--
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 7081b88..2405004 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -819,6 +819,7 @@
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>;
@@ -837,11 +838,9 @@
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..8d71af6 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>;
@@ -586,11 +587,9 @@
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 */
--
2.1.4
next prev parent reply other threads:[~2016-02-19 21:18 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-19 21:15 [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros
2016-02-19 21:15 ` [PATCH v5 01/26] ARM: OMAP2+: gpmc: Add platform data Roger Quadros
2016-02-19 21:15 ` [PATCH v5 02/26] ARM: OMAP2+: gpmc: Add gpmc timings and settings to " Roger Quadros
2016-02-19 21:15 ` [PATCH v5 03/26] memory: omap-gpmc: Introduce GPMC to NAND interface Roger Quadros
2016-03-05 1:35 ` Brian Norris
2016-03-07 8:55 ` Roger Quadros
2016-02-19 21:15 ` [PATCH v5 04/26] mtd: nand: omap2: Use gpmc_omap_get_nand_ops() to get NAND registers Roger Quadros
2016-02-19 21:15 ` [PATCH v5 05/26] memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status Roger Quadros
2016-02-19 21:15 ` [PATCH v5 06/26] mtd: nand: omap2: Switch to using GPMC-NAND ops for writebuffer empty check Roger Quadros
2016-02-19 21:15 ` [PATCH v5 07/26] memory: omap-gpmc: Implement IRQ domain for NAND IRQs Roger Quadros
2016-02-19 21:15 ` [PATCH v5 08/26] mtd: nand: omap: Copy platform data parameters to omap_nand_info data Roger Quadros
2016-02-19 21:15 ` [PATCH v5 09/26] mtd: nand: omap: Clean up device tree support Roger Quadros
2016-03-05 2:10 ` Brian Norris
2016-03-07 9:06 ` Roger Quadros
2016-03-05 2:28 ` Brian Norris
2016-03-07 9:02 ` Roger Quadros
2016-02-19 21:15 ` [PATCH v5 10/26] mtd: nand: omap: Update DT binding documentation Roger Quadros
2016-02-23 19:41 ` Rob Herring
2016-02-24 9:55 ` Roger Quadros
2016-03-05 2:04 ` Brian Norris
2016-03-07 9:46 ` Roger Quadros
2016-03-07 18:58 ` Brian Norris
2016-03-07 10:32 ` [PATCH v6 " Roger Quadros
2016-03-17 14:48 ` Rob Herring
2016-02-19 21:15 ` [PATCH v5 11/26] memory: omap-gpmc: Prevent mapping into 1st 16MB Roger Quadros
2016-02-19 21:15 ` [PATCH v5 12/26] memory: omap-gpmc: Move device tree binding to correct location Roger Quadros
2016-02-23 20:50 ` Rob Herring
2016-02-24 9:51 ` Roger Quadros
2016-02-19 21:15 ` [PATCH v5 13/26] memory: omap-gpmc: Support general purpose input for WAITPINs Roger Quadros
2016-03-07 9:34 ` Boris Brezillon
2016-03-07 9:38 ` Boris Brezillon
2016-03-07 10:02 ` Roger Quadros
2016-03-07 10:31 ` Boris Brezillon
2016-02-19 21:15 ` [PATCH v5 14/26] memory: omap-gpmc: Reserve WAITPIN if needed for WAIT monitoring Roger Quadros
2016-02-19 21:15 ` [PATCH v5 15/26] memory: omap-gpmc: Support WAIT pin edge interrupts Roger Quadros
2016-02-19 21:15 ` [PATCH v5 16/26] memory: omap-gpmc: Prevent GPMC_STATUS from being accessed via gpmc_regs Roger Quadros
2016-02-19 21:15 ` [PATCH v5 17/26] mtd: nand: omap2: Implement NAND ready using gpiolib Roger Quadros
2016-03-05 1:46 ` Brian Norris
2016-03-07 9:11 ` Roger Quadros
2016-03-07 9:22 ` Boris Brezillon
2016-02-19 21:15 ` [PATCH v5 18/26] ARM: dts: dra7: Fix NAND device nodes Roger Quadros
2016-02-19 21:15 ` [PATCH v5 19/26] ARM: dts: dra7x-evm: Provide NAND ready pin Roger Quadros
2016-02-19 21:15 ` [PATCH v5 20/26] ARM: dts: am437x: Fix NAND device nodes Roger Quadros
2016-02-19 21:15 ` Roger Quadros [this message]
2016-02-19 21:15 ` [PATCH v5 22/26] ARM: dts: am335x: " Roger Quadros
2016-02-19 21:15 ` [PATCH v5 23/26] ARM: dts: am335x: Provide NAND ready pin Roger Quadros
2016-02-19 21:15 ` [PATCH v5 24/26] ARM: dts: dm814x: Fix gpmc and NAND node Roger Quadros
2016-02-19 21:15 ` [PATCH v5 25/26] ARM: dts: dm816x: " Roger Quadros
2016-02-19 21:15 ` [PATCH v5 26/26] ARM: dts: omap3: Fix gpmc and NAND nodes Roger Quadros
2016-02-19 22:04 ` [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Tony Lindgren
2016-02-22 10:15 ` Roger Quadros
2016-02-22 16:42 ` Tony Lindgren
2016-02-22 20:05 ` Roger Quadros
2016-02-29 16:25 ` Roger Quadros
2016-03-05 2:33 ` Brian Norris
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