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Message-ID: <56D470E8.4070106@ti.com> Date: Mon, 29 Feb 2016 18:25:12 +0200 From: Roger Quadros <rogerq@...com> To: <computersforpeace@...il.com> CC: <tony@...mide.com>, <dwmw2@...radead.org>, <ezequiel@...guardiasur.com.ar>, <javier@...hile0.org>, <fcooper@...com>, <nsekhar@...com>, <linux-mtd@...ts.infradead.org>, <linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Brian, On 19/02/16 23:15, Roger Quadros wrote: > Hi, > > @Tony > Patches 15 and 24 are new and will need your review. > I've modified patch 22 to include the new am335x boards introduced since v4.4. > > Patches are based on top of omap-for-v4.6/dt so that the DT changes apply cleanly. > > @Brian > If you can Ack the MTD related changes we can push the series (excluding DT patches) > to an immutable branch and you can then pull it into l2-mtd.git Gentle ping on this. Thanks. cheers, -roger > > Patches tested on: > dra-evm, am437x-gp-evm, beagleboard-c4, beagleboard-c4-legacyboot > > Changelog: > v5: > -changed ready/busy# GPIO DT binding from "ready-gpio" to "rb-gpios". > -use irqdomain for gpmc NAND interrupts: fifoevent and termcount > > v4: > -Warn if using older incompatible DT i.e. compatible property not present > in nand node. > -Applied Tony's patch to fix broken ethernet on torpedo. > > v3: > -Fixed and tested NAND using legacy boot on omap3-beagle. > -Support rising and falling edge interrupts on WAITpins. > -Update DT node of all gpmc users. > > Patches summary: > > We do a couple of things in this series which result in > cleaner device tree implementation, faster perfomance and > multi-platform support. As an added bonus we get to use the GPMC_WAIT > pins as GPI/Interrupts. > > - Establish a custom interface between NAND and GPMC driver. This is > needed because all of the NAND registers sit in the GPMC register space. > > - Clean up device tree support so that omap-gpmc IP and the omap2 NAND > driver can be used on non-OMAP platforms. e.g. Keystone. > > - Implement GPIOCHIP for the GPMC WAITPINS. SoCs can contain > 2 to 4 of these and most of them would be unused otherwise. It also > allows a cleaner implementation of NAND Ready pin status for the NAND driver. > > - Implement GPMC IRQ domain to proivde the 2 NAND events and > GPMC WAITPIN edge interrupts. > > - Implement GPIOlib based NAND ready pin checking for OMAP NAND driver. > On dra7-evm, Read speed increases from 13768 KiB/ to 17246 KiB/s. > Write speed was unchanged at 7123 KiB/s. > > This series is available at > git@...hub.com:rogerq/linux.git > in branch > for-v4.6/gpmc-v5 > > -- > cheers, > -roger > > Roger Quadros (26): > ARM: OMAP2+: gpmc: Add platform data > ARM: OMAP2+: gpmc: Add gpmc timings and settings to platform data > memory: omap-gpmc: Introduce GPMC to NAND interface > mtd: nand: omap2: Use gpmc_omap_get_nand_ops() to get NAND registers > memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status > mtd: nand: omap2: Switch to using GPMC-NAND ops for writebuffer empty > check > memory: omap-gpmc: Implement IRQ domain for NAND IRQs > mtd: nand: omap: Copy platform data parameters to omap_nand_info data > mtd: nand: omap: Clean up device tree support > mtd: nand: omap: Update DT binding documentation > memory: omap-gpmc: Prevent mapping into 1st 16MB > memory: omap-gpmc: Move device tree binding to correct location > memory: omap-gpmc: Support general purpose input for WAITPINs > memory: omap-gpmc: Reserve WAITPIN if needed for WAIT monitoring > memory: omap-gpmc: Support WAIT pin edge interrupts > memory: omap-gpmc: Prevent GPMC_STATUS from being accessed via > gpmc_regs > mtd: nand: omap2: Implement NAND ready using gpiolib > ARM: dts: dra7: Fix NAND device nodes. > ARM: dts: dra7x-evm: Provide NAND ready pin > ARM: dts: am437x: Fix NAND device nodes > ARM: dts: am437x: Provide NAND ready pin > ARM: dts: am335x: Fix NAND device nodes > ARM: dts: am335x: Provide NAND ready pin > ARM: dts: dm814x: Fix gpmc and NAND node > ARM: dts: dm816x: Fix gpmc and NAND node > ARM: dts: omap3: Fix gpmc and NAND nodes > > Documentation/devicetree/bindings/bus/ti-gpmc.txt | 130 ---- > .../bindings/memory-controllers/omap-gpmc.txt | 141 +++++ > .../devicetree/bindings/mtd/gpmc-nand.txt | 19 +- > arch/arm/boot/dts/am335x-baltos-ir5221.dts | 10 +- > arch/arm/boot/dts/am335x-chilisom.dtsi | 9 +- > arch/arm/boot/dts/am335x-cm-t335.dts | 10 +- > arch/arm/boot/dts/am335x-evm.dts | 8 +- > arch/arm/boot/dts/am335x-igep0033.dtsi | 9 +- > arch/arm/boot/dts/am335x-phycore-som.dtsi | 9 +- > arch/arm/boot/dts/am33xx.dtsi | 4 + > arch/arm/boot/dts/am4372.dtsi | 4 + > arch/arm/boot/dts/am437x-cm-t43.dts | 7 +- > arch/arm/boot/dts/am437x-gp-evm.dts | 9 +- > arch/arm/boot/dts/am43x-epos-evm.dts | 9 +- > arch/arm/boot/dts/dm8148-evm.dts | 8 +- > arch/arm/boot/dts/dm814x.dtsi | 4 + > arch/arm/boot/dts/dm8168-evm.dts | 8 +- > arch/arm/boot/dts/dm816x.dtsi | 4 + > arch/arm/boot/dts/dra62x-j5eco-evm.dts | 8 +- > arch/arm/boot/dts/dra7-evm.dts | 7 +- > arch/arm/boot/dts/dra7.dtsi | 4 + > arch/arm/boot/dts/dra72-evm.dts | 7 +- > arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts | 3 +- > arch/arm/boot/dts/logicpd-torpedo-som.dtsi | 8 +- > arch/arm/boot/dts/omap3-beagle.dts | 5 +- > arch/arm/boot/dts/omap3-cm-t3x.dtsi | 6 +- > arch/arm/boot/dts/omap3-devkit8000-common.dtsi | 4 + > arch/arm/boot/dts/omap3-evm-37xx.dts | 8 +- > arch/arm/boot/dts/omap3-gta04.dtsi | 4 + > arch/arm/boot/dts/omap3-igep.dtsi | 6 +- > arch/arm/boot/dts/omap3-igep0020-common.dtsi | 4 +- > arch/arm/boot/dts/omap3-igep0030-common.dtsi | 4 + > arch/arm/boot/dts/omap3-ldp.dts | 10 +- > arch/arm/boot/dts/omap3-lilly-a83x.dtsi | 6 +- > arch/arm/boot/dts/omap3-overo-base.dtsi | 6 +- > arch/arm/boot/dts/omap3-pandora-common.dtsi | 4 + > arch/arm/boot/dts/omap3-tao3530.dtsi | 6 +- > arch/arm/boot/dts/omap3.dtsi | 4 + > arch/arm/boot/dts/omap3430-sdp.dts | 6 +- > arch/arm/mach-omap2/gpmc-nand.c | 7 +- > drivers/memory/Kconfig | 1 + > drivers/memory/omap-gpmc.c | 653 +++++++++++++-------- > drivers/mtd/nand/omap2.c | 193 ++++-- > include/linux/omap-gpmc.h | 177 ++---- > include/linux/platform_data/gpmc-omap.h | 167 ++++++ > include/linux/platform_data/mtd-nand-omap2.h | 12 +- > 46 files changed, 1121 insertions(+), 611 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/bus/ti-gpmc.txt > create mode 100644 Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt > create mode 100644 include/linux/platform_data/gpmc-omap.h >
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