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Message-ID: <1449144142-24004-4-git-send-email-harvey.hunt@imgtec.com>
Date: Thu, 3 Dec 2015 12:02:22 +0000
From: Harvey Hunt <harvey.hunt@...tec.com>
To: <linux-mtd@...ts.infradead.org>
CC: Alex Smith <alex.smith@...tec.com>,
Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>,
David Woodhouse <dwmw2@...radead.org>,
"Brian Norris" <computersforpeace@...il.com>,
Paul Burton <paul.burton@...tec.com>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-mips@...ux-mips.org>, Harvey Hunt <harvey.hunt@...tec.com>
Subject: [PATCH v9 3/3] MIPS: dts: jz4780/ci20: Add NEMC, BCH and NAND device tree nodes
From: Alex Smith <alex.smith@...tec.com>
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@...tec.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
Cc: David Woodhouse <dwmw2@...radead.org>
Cc: Brian Norris <computersforpeace@...il.com>
Cc: Paul Burton <paul.burton@...tec.com>
Cc: linux-mtd@...ts.infradead.org
Cc: devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-mips@...ux-mips.org
Signed-off-by: Harvey Hunt <harvey.hunt@...tec.com>
---
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@...00000 {
+ label = "u-boot";
+ reg = <0x0 0x800000 0x0 0x200000>;
+ };
+
+ partition@...00000 {
+ label = "u-boot-env";
+ reg = <0x0 0xa00000 0x0 0x200000>;
+ };
+
+ partition@...00000 {
+ label = "boot";
+ reg = <0x0 0xc00000 0x0 0x4000000>;
+ };
+
+ partition@...c00000 {
+ 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@...10000 {
+ 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@...d0000 {
+ compatible = "ingenic,jz4780-bch";
+ reg = <0x134d0000 0x10000>;
+
+ clocks = <&cgu JZ4780_CLK_BCH>;
+
+ status = "disabled";
+ };
};
--
2.6.2
--
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