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Groups > linux.kernel > #1338488
| From | Roger Quadros <rogerq@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v5 21/26] ARM: dts: am437x: Provide NAND ready pin |
| Date | 2016-02-19 22:20 +0100 |
| Message-ID | <r40D2-2XK-45@gated-at.bofh.it> (permalink) |
| References | <r40CZ-2XK-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
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[PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-02-19 22:20 +0100
[PATCH v5 21/26] ARM: dts: am437x: Provide NAND ready pin Roger Quadros <rogerq@ti.com> - 2016-02-19 22:20 +0100
[PATCH v5 10/26] mtd: nand: omap: Update DT binding documentation Roger Quadros <rogerq@ti.com> - 2016-02-19 22:20 +0100
[PATCH v5 14/26] memory: omap-gpmc: Reserve WAITPIN if needed for WAIT monitoring Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 22/26] ARM: dts: am335x: Fix NAND device nodes Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 01/26] ARM: OMAP2+: gpmc: Add platform data Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 08/26] mtd: nand: omap: Copy platform data parameters to omap_nand_info data Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 05/26] memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 17/26] mtd: nand: omap2: Implement NAND ready using gpiolib Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 09/26] mtd: nand: omap: Clean up device tree support Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 03/26] memory: omap-gpmc: Introduce GPMC to NAND interface Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 07/26] memory: omap-gpmc: Implement IRQ domain for NAND IRQs Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 15/26] memory: omap-gpmc: Support WAIT pin edge interrupts Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 02/26] ARM: OMAP2+: gpmc: Add gpmc timings and settings to platform data Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
[PATCH v5 04/26] mtd: nand: omap2: Use gpmc_omap_get_nand_ops() to get NAND registers Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-02-19 23:10 +0100
Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-02-22 11:20 +0100
Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-02-22 17:50 +0100
Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-02-22 21:10 +0100
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