* Roger Quadros <rogerq@xxxxxx> [150930 04:04]: > Tony, > > On 18/09/15 17:53, Roger Quadros wrote: > > Hi, > > > > 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 new GPI/Interrupt pins > > for use in the system. > > > > - Establish a custom interface between NAND and GPMC driver. This is > > needed because all of the NAND registers sit in the GPMC register space. > > Some bits like NAND IRQ are even shared with GPMC. > > > > - Remove NAND IRQ handling from omap-gpmc driver, share the GPMC IRQ > > with the omap2-nand driver and handle NAND IRQ events in the NAND driver. > > This causes performance increase when using prefetch-irq mode. > > 30% increase in read, 17% increase in write in prefetch-irq mode. > > > > - 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 + IRQCHIP 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 GPIOlib based NAND ready pin checking for OMAP NAND driver. > > > > This series is available at > > git@xxxxxxxxxx:rogerq/linux.git > > in branch > > for-v4.4/gpmc-v3 In general, very nice work :) > I've verified this series with the following boards > -dra7-evm > -am437x-gp-evm > -am335x-evm > -beagleboard-c4 > > For legacy boot I've checked only on beagleboard-c4. Great. Does build and boot and use NAND work throughtout the series? Otherwise we'll have hard time bisecting anything.. > Test procedure was to read an existing ubifs partition, > create a new one and read it back. > > Need you to Ack if it looks good. > Do you mind taking it via omap-soc once MTD maintainers ack their relevant parts? Sure. I'll try to do some testing on the series first too. Can the dts changes be merged separtely? Otherwise we'll have a dependency between dts branch and the GPMC/NAND changes. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
