On Thu, 24 Dec 2015 12:20:15 +0000 Harvey Hunt <harvey.hunt@xxxxxxxxxx> wrote: > From: Alex Smith <alex.smith@xxxxxxxxxx> > > Add device tree nodes for the NEMC and BCH to the JZ4780 device tree, > and make use of them in the Ci20 device tree to add a node for the > board's NAND. > > Note that since the pinctrl driver is not yet upstream, this includes > neither pin configuration nor busy/write-protect GPIO pins for the > NAND. Use of the NAND relies on the boot loader to have left the pins > configured in a usable state, which should be the case when booted > from the NAND. > > Signed-off-by: Alex Smith <alex.smith@xxxxxxxxxx> > Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx> > Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx> > Cc: Brian Norris <computersforpeace@xxxxxxxxx> > Cc: Paul Burton <paul.burton@xxxxxxxxxx> > Cc: linux-mtd@xxxxxxxxxxxxxxxxxxx > Cc: devicetree@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > Cc: linux-mips@xxxxxxxxxxxxxx > Cc: robh@xxxxxxxxxx > Signed-off-by: Harvey Hunt <harvey.hunt@xxxxxxxxxx> Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> > --- > v9 -> v10: > - No change. > > v8 -> v9: > - Represent the partition table as a subnode of a NAND chip. > > v7 -> v8: > - Describe the NAND chips as children nodes of the NAND controller. > - Remove ingenic, prefix from ECC settings. > - Renamed some ECC settings. > > v6 -> v7: > - Add nand-ecc-mode to DT. > - Add nand-on-flash-bbt to DT. > > v4 -> v5: > - New patch adding DT nodes for the NAND so that the driver can be > tested. > > arch/mips/boot/dts/ingenic/ci20.dts | 63 ++++++++++++++++++++++++++++++++++ > arch/mips/boot/dts/ingenic/jz4780.dtsi | 26 ++++++++++++++ > 2 files changed, 89 insertions(+) > > diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts > index 9fcb9e7..782258c 100644 > --- a/arch/mips/boot/dts/ingenic/ci20.dts > +++ b/arch/mips/boot/dts/ingenic/ci20.dts > @@ -42,3 +42,66 @@ > &uart4 { > status = "okay"; > }; > + > +&nemc { > + status = "okay"; > + > + nandc: nand-controller@1 { > + compatible = "ingenic,jz4780-nand"; > + reg = <1 0 0x1000000>; > + > + #address-cells = <1>; > + #size-cells = <0>; > + > + ingenic,bch-controller = <&bch>; > + > + ingenic,nemc-tAS = <10>; > + ingenic,nemc-tAH = <5>; > + ingenic,nemc-tBP = <10>; > + ingenic,nemc-tAW = <15>; > + ingenic,nemc-tSTRV = <100>; > + > + nand@1 { > + reg = <1>; > + > + nand-ecc-step-size = <1024>; > + nand-ecc-strength = <24>; > + nand-ecc-mode = "hw"; > + nand-on-flash-bbt; > + > + partitions { > + #address-cells = <2>; > + #size-cells = <2>; > + > + partition@0 { > + label = "u-boot-spl"; > + reg = <0x0 0x0 0x0 0x800000>; > + }; > + > + partition@0x800000 { > + label = "u-boot"; > + reg = <0x0 0x800000 0x0 0x200000>; > + }; > + > + partition@0xa00000 { > + label = "u-boot-env"; > + reg = <0x0 0xa00000 0x0 0x200000>; > + }; > + > + partition@0xc00000 { > + label = "boot"; > + reg = <0x0 0xc00000 0x0 0x4000000>; > + }; > + > + partition@0x8c00000 { > + label = "system"; > + reg = <0x0 0x4c00000 0x1 0xfb400000>; > + }; > + }; > + }; > + }; > +}; > + > +&bch { > + status = "okay"; > +}; > diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi b/arch/mips/boot/dts/ingenic/jz4780.dtsi > index 65389f6..b868b42 100644 > --- a/arch/mips/boot/dts/ingenic/jz4780.dtsi > +++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi > @@ -108,4 +108,30 @@ > > status = "disabled"; > }; > + > + nemc: nemc@13410000 { > + compatible = "ingenic,jz4780-nemc"; > + reg = <0x13410000 0x10000>; > + #address-cells = <2>; > + #size-cells = <1>; > + ranges = <1 0 0x1b000000 0x1000000 > + 2 0 0x1a000000 0x1000000 > + 3 0 0x19000000 0x1000000 > + 4 0 0x18000000 0x1000000 > + 5 0 0x17000000 0x1000000 > + 6 0 0x16000000 0x1000000>; > + > + clocks = <&cgu JZ4780_CLK_NEMC>; > + > + status = "disabled"; > + }; > + > + bch: bch@134d0000 { > + compatible = "ingenic,jz4780-bch"; > + reg = <0x134d0000 0x10000>; > + > + clocks = <&cgu JZ4780_CLK_BCH>; > + > + status = "disabled"; > + }; > }; -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- 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