| Message ID | 20200108205338.11369-1-jbx6244@gmail.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Enable RK3066 NANDC for MK808 | expand |
+ Yifeng Zhao On 2020/1/9 4:53, Johan Jonker wrote: > DISCLAIMER: Use at your own risk. > Status: For testing only! > > Version: V1 > > Title: Enable RK3066 NANDC for MK808. > > The majority of Rockchip devices use a closed source FTL driver > to reduce wear leveling. This patch serie proposes > an experimental raw NAND controller driver for basic tasks > in order to get the bindings and the nodes accepted for in the dts files. > > What does it do: > > On module load this driver will reserve its resources. > After initialization the MTD framework will then try to detect > the type and number of NAND chips. When all conditions are met, > it registers it self as MTD device. > This driver is then ready to receive user commands > such as to read and write NAND pages. > > Test examples: > > # dd if-/dev/mtd0 of=dd.bin bs=8192 count=4 > > # nanddump -a -l 32768 -f nanddump.bin /dev/mtd0 > > Not tested: > > NANDC version 9. > NAND raw write. > RK3066 still has no support for Uboot. > Any write command would interfere with data structures made by the boot loader. > > Etc. > > Problems: > > No bad block support. Most devices use a FTL bad block map with tags > that must be located on specific page locations which is outside > the scope of the raw MTD framework. > Hi Johan, I loop in the author of the original NANDC driver who is now gonna to develop a new version of NANDC driver in near future that supports more features like bad block supoort. Maybe he could share his TODO. > No partition support. A FTL driver will store at random locations and > a linear user specific layout does not fit within > the generic character of this basic driver. > > Etc. > > Chris Zhong (1): > ARM: dts: rockchip: add nandc node for rk3066a/rk3188 > > Dingqiang Lin (2): > arm64: dts: rockchip: add nandc node for px30 > arm64: dts: rockchip: add nandc node for rk3308 > > Jianqun Xu (1): > ARM: dts: rockchip: add nandc nodes for rk3288 > > Johan Jonker (2): > dt-bindings: mtd: add rockchip nand controller bindings > ARM: dts: rockchip: rk3066a-mk808: enable nandc node > > Jon Lin (1): > ARM: dts: rockchip: add nandc node for rv1108 > > Wenping Zhang (1): > ARM: dts: rockchip: add nandc node for rk322x > > Yifeng Zhao (1): > mtd: nand: raw: add rockchip nand controller driver > > Zhaoyifeng (1): > arm64: dts: rockchip: add nandc node for rk3368 > > .../devicetree/bindings/mtd/rockchip,nandc.yaml | 78 ++ > arch/arm/boot/dts/rk3066a-mk808.dts | 9 + > arch/arm/boot/dts/rk322x.dtsi | 11 + > arch/arm/boot/dts/rk3288.dtsi | 24 + > arch/arm/boot/dts/rk3xxx.dtsi | 11 + > arch/arm/boot/dts/rv1108.dtsi | 11 + > arch/arm64/boot/dts/rockchip/px30.dtsi | 15 + > arch/arm64/boot/dts/rockchip/rk3308.dtsi | 11 + > arch/arm64/boot/dts/rockchip/rk3368.dtsi | 12 + > drivers/mtd/nand/raw/Kconfig | 8 + > drivers/mtd/nand/raw/Makefile | 1 + > drivers/mtd/nand/raw/rockchip_nandc.c | 1224 ++++++++++++++++++++ > 12 files changed, 1415 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mtd/rockchip,nandc.yaml > create mode 100644 drivers/mtd/nand/raw/rockchip_nandc.c > > -- > 2.11.0 > > > _______________________________________________ > Linux-rockchip mailing list > Linux-rockchip@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-rockchip > > >
Hi Shawn, Thank you for your notice. In that case I think that I produce a version 2 "light", where I address only a small amount of the TODO's and leave all other things up to you, so that you can do what suits you best. Hope that RK3066 support for MTD can be included.(Linux and Uboot) Thanks On 1/13/20 2:55 AM, Shawn Lin wrote: > > Hi Johan, > > I loop in the author of the original NANDC driver who is now gonna to > develop a new version of NANDC driver in near future that supports more > features like bad block supoort. Maybe he could share his TODO. >