linux-kernel - [PATCH 2/2] ARM: dts: at91: sama7g5ek: Add QSPI0 node

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Date:   Thu, 9 Dec 2021 14:36:43 +0200
From:   Tudor Ambarus <tudor.ambarus@...rochip.com>
To:     <robh+dt@...nel.org>, <nicolas.ferre@...rochip.com>
CC:     <alexandre.belloni@...tlin.com>, <ludovic.desroches@...rochip.com>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>
Subject: [PATCH 2/2] ARM: dts: at91: sama7g5ek: Add QSPI0 node

QSPI0 comunicates with a MX66LM1G45G SPI NOR flash.
Enable the controller and describe the flash.

Signed-off-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
---
 arch/arm/boot/dts/at91-sama7g5ek.dts | 73 ++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama7g5ek.dts b/arch/arm/boot/dts/at91-sama7g5ek.dts
index 0e1975c6812e..ccf9e224da78 100644
--- a/arch/arm/boot/dts/at91-sama7g5ek.dts
+++ b/arch/arm/boot/dts/at91-sama7g5ek.dts
@@ -13,6 +13,7 @@
 #include "sama7g5.dtsi"
 #include <dt-bindings/mfd/atmel-flexcom.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/at91.h>
 
 / {
 	model = "Microchip SAMA7G5-EK";
@@ -134,6 +135,59 @@ &cpu0 {
 	cpu-supply = <&vddcpu>;
 };
 
+&qspi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_qspi>;
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <133000000>;
+		spi-tx-bus-width = <8>;
+		spi-rx-bus-width = <8>;
+		m25p,fast-read;
+
+		at91bootstrap@0 {
+			label = "ospi: at91bootstrap";
+			reg = <0x0 0x40000>;
+		};
+
+		bootloader@...00 {
+			label = "ospi: bootloader";
+			reg = <0x40000 0xc0000>;
+		};
+
+		bootloaderenvred@...000 {
+			label = "ospi: bootloader env redundant";
+			reg = <0x100000 0x40000>;
+		};
+
+		bootloaderenv@...000 {
+			label = "ospi: bootloader env";
+			reg = <0x140000 0x40000>;
+		};
+
+		dtb@...000 {
+			label = "ospi: device tree";
+			reg = <0x180000 0x80000>;
+		};
+
+		kernel@...000 {
+			label = "ospi: kernel";
+			reg = <0x200000 0x600000>;
+		};
+
+		rootfs@...000 {
+			label = "ospi: rootfs";
+			reg = <0x800000 0x7800000>;
+		};
+
+	};
+};
+
 &dma0 {
 	status = "okay";
 };
@@ -555,6 +609,25 @@ pinctrl_mikrobus1_spi: mikrobus1_spi {
 		bias-disable;
 	};
 
+	pinctrl_qspi: qspi {
+		pinmux = <PIN_PB12__QSPI0_IO0>,
+			 <PIN_PB11__QSPI0_IO1>,
+			 <PIN_PB10__QSPI0_IO2>,
+			 <PIN_PB9__QSPI0_IO3>,
+			 <PIN_PB16__QSPI0_IO4>,
+			 <PIN_PB17__QSPI0_IO5>,
+			 <PIN_PB18__QSPI0_IO6>,
+			 <PIN_PB19__QSPI0_IO7>,
+			 <PIN_PB13__QSPI0_CS>,
+			 <PIN_PB14__QSPI0_SCK>,
+			 <PIN_PB15__QSPI0_SCKN>,
+			 <PIN_PB20__QSPI0_DQS>,
+			 <PIN_PB21__QSPI0_INT>;
+		bias-disable;
+		slew-rate = <0>;
+		atmel,drive-strength = <ATMEL_PIO_DRVSTR_HI>;
+	};
+
 	pinctrl_sdmmc0_default: sdmmc0_default {
 		cmd_data {
 			pinmux = <PIN_PA1__SDMMC0_CMD>,
-- 
2.25.1