this patch serie updates OMAP2+ OneNAND driver to the present times, making it fully DT configurable, using libgpio and dmaengine apis - those are optional, driver will work without them. Please note that unlike previous driver version, which basically ignored DT specified timings, this one relies on it, so it is important to get it right in your DT (dumping it from previous kernel version). In case synchronous timings is requested, it is okay to specify timings for the slowest chip ever used for you board as it is evetually optimized after chip probe. Original driver used DMA only if user specified INT gpio in platform data, now DMA is used unconditionally and PIO mode is used as fallback. In case anyone wants to give it a try, few DT related changes are needed: - onenand node needs 'ti,omap2-onenand' compatible (for mailine boards this is done in patch 2) - to use INT pin, int-gpios needs to be specified (for n900 and n8x0 this is done in patch 16, however patch lacks pinmux configuration. Most notable changes from v3: - added dmaengine patches by Peter Ujfalusi - added dt bindings documentation - added cleanup patches - DMA enabled by default Most notable changes from v4: - collected tags - used INT pin name properly - hopefully all comments taken into account Also note that driver will fail probe OneNAND chip after patch 13 and start working again after patch 14. Testing and benchmarking very welcome. Depends on "memory: omap-gpmc: Make 'bank-width' property optional" https://patchwork.kernel.org/patch/10043259/ Ladislav Michl (14): dt-bindings: mtd: gpmc-onenand: Update properties description ARM: dts: OMAP2+: Add compatible property to onenand node ARM: dts: omap3-igep: Update onenand node timings mtd: onenand: omap2: Remove regulator support mtd: onenand: omap2: Remove skip initial unlocking support mtd: onenand: omap2: Remove partitioning support from platform data mtd: onenand: omap2: Account waiting time as waiting on IO mtd: onenand: omap2: Unify OMAP2 and OMAP3 DMA implementation mtd: onenand: omap2: Do not make delay for GPIO OMAP3 specific mtd: onenand: omap2: Decouple DMA enabling from INT pin availability memory: omap-gpmc: Refactor OneNAND support mtd: onenand: omap2: Configure driver from DT ARM: OMAP2+: Remove gpmc-onenand ARM: dts: Nokia: Use OneNAND INT pin Peter Ujfalusi (2): mtd: onenand: omap2: Simplify the DMA setup for various paths mtd: onenand: omap2: Convert to use dmaengine for memcpy .../devicetree/bindings/mtd/gpmc-onenand.txt | 6 +- arch/arm/boot/dts/omap2420-n8x0-common.dtsi | 5 +- arch/arm/boot/dts/omap3-igep.dtsi | 30 +- arch/arm/boot/dts/omap3-n900.dts | 3 +- arch/arm/boot/dts/omap3-n950-n9.dtsi | 1 + arch/arm/boot/dts/omap3430-sdp.dts | 1 + arch/arm/mach-omap2/Makefile | 3 - arch/arm/mach-omap2/gpmc-onenand.c | 409 --------------- drivers/memory/omap-gpmc.c | 158 ++++-- drivers/mtd/onenand/Kconfig | 3 +- drivers/mtd/onenand/omap2.c | 576 ++++++++------------- include/linux/omap-gpmc.h | 28 + include/linux/platform_data/mtd-onenand-omap2.h | 34 -- 13 files changed, 387 insertions(+), 870 deletions(-) delete mode 100644 arch/arm/mach-omap2/gpmc-onenand.c delete mode 100644 include/linux/platform_data/mtd-onenand-omap2.h -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
