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[PATCH v5 4/4] MIPS: dts: jz4780/ci20: Add NEMC, BCH and NAND device tree nodes

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  [PATCH v5 4/4] MIPS: dts: jz4780/ci20: Add NEMC, BCH and NAND device tree nodes Alex Smith <alex.smith@imgtec.com> - 2015-09-08 11:20 +0200

#1220628 — [PATCH v5 4/4] MIPS: dts: jz4780/ci20: Add NEMC, BCH and NAND device tree nodes

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@imgtec.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mtd@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
---
v4 -> v5:
 - New patch adding DT nodes for the NAND so that the driver can be
   tested.
---
 arch/mips/boot/dts/ingenic/ci20.dts    | 51 ++++++++++++++++++++++++++++++++++
 arch/mips/boot/dts/ingenic/jz4780.dtsi | 26 +++++++++++++++++
 2 files changed, 77 insertions(+)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 9fcb9e7d1f57..c0c8a64a3522 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -42,3 +42,54 @@
 &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>;
+
+		#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 65389f602733..b868b429add2 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";
+	};
 };
-- 
2.5.0

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