[PATCH v7,3/3] MIPS: dts: jz4780/ci20: Add NEMC, BCH and NAND device tree nodes
From: Harvey Hunt <hidden>
Date: 2015-10-06 16:28:32
Also in:
linux-devicetree, lkml
Subsystem:
ingenic jz47xx socs, mips, the rest · Maintainers:
Paul Cercueil, Thomas Bogendoerfer, Linus Torvalds
From: Alex Smith <redacted> 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 <redacted> Cc: Zubair Lutfullah Kakakhel <redacted> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Paul Burton <redacted> Cc: linux-mtd@lists.infradead.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: Alex Smith <redacted> Signed-off-by: Harvey Hunt <redacted> --- 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 | 54 ++++++++++++++++++++++++++++++++++ arch/mips/boot/dts/ingenic/jz4780.dtsi | 26 ++++++++++++++++ 2 files changed, 80 insertions(+)
diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 9fcb9e7..453f1d3 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts@@ -42,3 +42,57 @@ &uart4 { status = "okay"; }; + +&nemc { + status = "okay"; + + nand: nand@1 { + compatible = "ingenic,jz4780-nand"; + reg = <1 0 0x1000000>; + + ingenic,nemc-tAS = <10>; + ingenic,nemc-tAH = <5>; + ingenic,nemc-tBP = <10>; + ingenic,nemc-tAW = <15>; + ingenic,nemc-tSTRV = <100>; + + ingenic,bch-controller = <&bch>; + ingenic,ecc-size = <1024>; + ingenic,ecc-strength = <24>; + + nand-ecc-mode = "hw"; + nand-on-flash-bbt; + + #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"; + }; };
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2.6.0