linux-kernel - [PATCH] arm64: dts: ls1028a: Add FlexSPI support for NXP LS1028

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Date:   Tue, 10 Sep 2019 17:50:51 +0530
From:   Ashish Kumar <Ashish.Kumar@....com>
To:     devicetree@...r.kernel.org, robh@...nel.org, mark.rutland@....com,
        shawnguo@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Ashish Kumar <Ashish.Kumar@....com>,
        Xiaowei Bao <xiaowei.bao@....com>
Subject: [PATCH] arm64: dts: ls1028a: Add FlexSPI support for NXP LS1028

Add fspi node property for LS1028A SoC for FlexSPI driver.
Property added for FlexSPI controller and for the connected
slave device for the LS1028ARDB and LS1028AQDS target.
RDB and QDS is having one SPI-NOR flash device, mt35xu02g
connected at CS0.
This flash device "mt35xu02g" is tested for octal read

Signed-off-by: Xiaowei Bao <xiaowei.bao@....com>
Signed-off-by: Ashish Kumar <Ashish.Kumar@....com>
---
 arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts | 15 +++++++++++++++
 arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts | 15 +++++++++++++++
 arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi    | 13 +++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
index 5e14e5a..5d46993 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
@@ -103,6 +103,21 @@
 	status = "okay";
 };
 
+&fspi {
+	status = "okay";
+	flash0: mt35xu02g@0 {
+		compatible = "micron,mt35xu02g", "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		m25p,fast-read;
+		spi-max-frequency = <50000000>;
+		reg = <0>;
+		/* The following setting enables 1-1-8 (CMD-ADDR-DATA) mode */
+		spi-rx-bus-width = <8>; /* 8 SPI Rx lines */
+		spi-tx-bus-width = <1>; /* 1 SPI Tx line */
+	};
+};
+
 &i2c0 {
 	status = "okay";
 
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
index 1a69221..f33cb2e 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
@@ -96,6 +96,21 @@
 	status = "okay";
 };
 
+&fspi {
+	status = "okay";
+	flash0: mt35xu02g@0 {
+		compatible = "micron,mt35xu02g", "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		m25p,fast-read;
+		spi-max-frequency = <50000000>;
+		reg = <0>;
+		/* The following setting enables 1-1-8 (CMD-ADDR-DATA) mode */
+		spi-rx-bus-width = <8>; /* 8 SPI Rx lines */
+		spi-tx-bus-width = <1>; /* 1 SPI Tx line */
+	};
+};
+
 &i2c0 {
 	status = "okay";
 
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
index b139b29..4aa1825 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
@@ -174,6 +174,19 @@
 			clocks = <&sysclk>;
 		};
 
+		fspi: spi@...0000 {
+			compatible = "nxp,lx2160a-fspi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0 0x20c0000 0x0 0x10000>,
+			      <0x0 0x20000000 0x0 0x10000000>;
+			reg-names = "fspi_base", "fspi_mmap";
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
+			clock-names = "fspi_en", "fspi";
+			status = "disabled";
+		};
+
 		i2c0: i2c@...0000 {
 			compatible = "fsl,vf610-i2c";
 			#address-cells = <1>;
-- 
2.7.4