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.

[ralf@linux-mips.org: fold in Geert Uytterhoeven's patch and acks from
Harvey's latest version.]

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: linux-mtd@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-mtd@lists.infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/11695/
Patchwork: https://patchwork.linux-mips.org/patch/11914/
Patchwork: https://patchwork.linux-mips.org/patch/11985/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 9fcb9e7d1f5752902d08ccdb174b9deeca5afad0..1652d8d60b1e4b8673acaa7d2ec182ce7eb7ff98 100644 (file)
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -42,3 +42,67 @@
 &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 {
+                               compatible = "fixed-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 65389f6027333c8c4bed688fb38ed11a31d4bd2e..b868b429add23af4c14f42a366b96760e49eee66 100644 (file)
--- 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";
+       };
 };