mediatek: add an upstreamed spi-nand driver

This patch implements the spi-nand controller driver as an ECC-capable
spi-mem controller to use the upstream SPI-NAND driver.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

1 files changed, 63 insertions, 53 deletions

diff --git a/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts b/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts
index 0386865cc2..d67fb4efbf 100644
--- a/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts
+++ b/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts
@@ -226,62 +226,72 @@
 	status = "okay";
 };
 
-&snand {
-	mediatek,quad-spi;
+&bch {
+	status = "okay";
+};
+
+&snfi {
 	pinctrl-names = "default";
 	pinctrl-0 = <&serial_nand_pins>;
 	status = "okay";
-	mediatek,bmt-v2;
-
-	partitions {
-		compatible = "fixed-partitions";
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		partition@0 {
-			label = "Preloader";
-			reg = <0x0 0x80000>;
-			read-only;
-		};
-
-		partition@80000 {
-			label = "ATF";
-			reg = <0x80000 0x40000>;
-			read-only;
-		};
-
-		partition@c0000 {
-			label = "u-boot";
-			reg = <0xc0000 0x80000>;
-			read-only;
-		};
-
-		partition@140000 {
-			label = "u-boot-env";
-			reg = <0x140000 0x80000>;
-			read-only;
-		};
-
-		factory: partition@1c0000 {
-			label = "factory";
-			reg = <0x1c0000 0x40000>;
-			read-only;
-		};
-
-		partition@200000 {
-			label = "ubi";
-			reg = <0x200000 0x6400000>;
-		};
-
-		partition@6600000 {
-			label = "User_data";
-			reg = <0x6600000 0x100000>;
-		};
-
-		/* size of this partition varies due to BMT & bad blocks. */
-		partition@6700000 {
-			label = "reserved";
-			reg = <0x6700000 0>;
+	flash@0 {
+		compatible = "spi-nand";
+		reg = <0>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+		nand-ecc-engine = <&snfi>;
+		mediatek,bmt-v2;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "Preloader";
+				reg = <0x0 0x80000>;
+				read-only;
+			};
+
+			partition@80000 {
+				label = "ATF";
+				reg = <0x80000 0x40000>;
+				read-only;
+			};
+
+			partition@c0000 {
+				label = "u-boot";
+				reg = <0xc0000 0x80000>;
+				read-only;
+			};
+
+			partition@140000 {
+				label = "u-boot-env";
+				reg = <0x140000 0x80000>;
+				read-only;
+			};
+
+			factory: partition@1c0000 {
+				label = "factory";
+				reg = <0x1c0000 0x40000>;
+				read-only;
+			};
+
+			partition@200000 {
+				label = "ubi";
+				reg = <0x200000 0x6400000>;
+			};
+
+			partition@6600000 {
+				label = "User_data";
+				reg = <0x6600000 0x100000>;
+			};
+
+			/* size of this partition varies due to BMT & bad blocks. */
+			partition@6700000 {
+				label = "reserved";
+				reg = <0x6700000 0>;
+			};
 		};
 	};
 };