From 228f9e0244960c9823ebcecf3bb0e4e06dc0420f Mon Sep 17 00:00:00 2001
From: Tudor Ambarus <tudor.ambarus@microchip.com>
Date: Fri, 27 Sep 2019 13:09:19 +0000
Subject: [PATCH] ARM: dts: at91: sam9x60ek: Enable qspi node

The sam9x60 qspi controller uses 2 clocks, one for the peripheral register
access, the other for the qspi core and phy. Both are mandatory.

Enable the qspi node together with the SST26VF064B qspi nor flash
memory. Booting from the QSPI NOR flash is now possible.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 arch/arm/dts/sam9x60.dtsi          | 29 ++++++++++++++++++++++++++++
 arch/arm/dts/sam9x60ek-u-boot.dtsi | 28 +++++++++++++++++++++++++++
 arch/arm/dts/sam9x60ek.dts         | 31 ++++++++++++++++++++++++++++++
 3 files changed, 88 insertions(+)

diff --git a/arch/arm/dts/sam9x60.dtsi b/arch/arm/dts/sam9x60.dtsi
index a66d0a278a..9c16ba1e6a 100644
--- a/arch/arm/dts/sam9x60.dtsi
+++ b/arch/arm/dts/sam9x60.dtsi
@@ -22,6 +22,7 @@
 		serial0 = &dbgu;
 		gpio0 = &pioA;
 		gpio1 = &pioB;
+		spi0 = &qspi;
 	};
 
 	clocks {
@@ -60,6 +61,17 @@
 			#size-cells = <1>;
 			ranges;
 
+			qspi: spi@f0014000 {
+				compatible = "microchip,sam9x60-qspi";
+				reg = <0xf0014000 0x100>, <0x70000000 0x10000000>;
+				reg-names = "qspi_base", "qspi_mmap";
+				clocks =  <&qspi_clk>, <&qspick>;
+				clock-names = "pclk", "qspick";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				status = "disabled";
+			};
+
 			macb0: ethernet@f802c000 {
 				compatible = "cdns,sam9x60-macb", "cdns,macb";
 				reg = <0xf802c000 0x100>;
@@ -172,6 +184,18 @@
 					atmel,clk-divisors = <1 2 4 6>;
 				};
 
+				system: systemck {
+					compatible = "atmel,at91rm9200-clk-system";
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					qspick: qspick {
+						#clock-cells = <0>;
+						reg = <19>;
+						clocks = <&mck>;
+					};
+				};
+
 				periph: periphck {
 					compatible = "microchip,sam9x60-clk-peripheral";
 					#address-cells = <1>;
@@ -202,6 +226,11 @@
 						#clock-cells = <0>;
 						reg = <24>;
 					};
+
+					qspi_clk: qspi_clk {
+						#clock-cells = <0>;
+						reg = <35>;
+					};
 				};
 
 				generic: gck {
diff --git a/arch/arm/dts/sam9x60ek-u-boot.dtsi b/arch/arm/dts/sam9x60ek-u-boot.dtsi
index 68e220926e..93cf1262f6 100644
--- a/arch/arm/dts/sam9x60ek-u-boot.dtsi
+++ b/arch/arm/dts/sam9x60ek-u-boot.dtsi
@@ -31,6 +31,10 @@
 	u-boot,dm-pre-reloc;
 };
 
+&qspi {
+	u-boot,dm-pre-reloc;
+};
+
 &pinctrl_dbgu {
 	u-boot,dm-pre-reloc;
 };
@@ -39,10 +43,18 @@
 	u-boot,dm-pre-reloc;
 };
 
+&pinctrl_qspi {
+	u-boot,dm-pre-reloc;
+};
+
 &pioA {
 	u-boot,dm-pre-reloc;
 };
 
+&pioB {
+	u-boot,dm-pre-reloc;
+};
+
 &pmc {
 	u-boot,dm-pre-reloc;
 };
@@ -59,6 +71,14 @@
 	u-boot,dm-pre-reloc;
 };
 
+&system {
+	u-boot,dm-pre-reloc;
+};
+
+&qspick {
+	u-boot,dm-pre-reloc;
+};
+
 &periph {
 	u-boot,dm-pre-reloc;
 };
@@ -67,6 +87,10 @@
 	u-boot,dm-pre-reloc;
 };
 
+&pioB_clk {
+	u-boot,dm-pre-reloc;
+};
+
 &sdhci0_clk {
 	u-boot,dm-pre-reloc;
 };
@@ -75,6 +99,10 @@
 	u-boot,dm-pre-reloc;
 };
 
+&qspi_clk {
+	u-boot,dm-pre-reloc;
+};
+
 &generic {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/dts/sam9x60ek.dts b/arch/arm/dts/sam9x60ek.dts
index 6fe9f19f0b..63904272f0 100644
--- a/arch/arm/dts/sam9x60ek.dts
+++ b/arch/arm/dts/sam9x60ek.dts
@@ -16,6 +16,37 @@
 	chosen {
 		stdout-path = &dbgu;
 	};
+
+	ahb {
+		apb {
+			qspi: spi@f0014000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_qspi>;
+				status = "okay";
+
+				nor_flash: sst26vf064@0 {
+					compatible = "spi-flash";
+					reg = <0>;
+					spi-max-frequency = <80000000>;
+					spi-rx-bus-width = <4>;
+					spi-tx-bus-width = <4>;
+				};
+			};
+
+			pinctrl {
+					pinctrl_qspi: qspi {
+						atmel,pins =
+							<AT91_PIOB 19 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOB 20 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOB 21 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+							 AT91_PIOB 22 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+							 AT91_PIOB 23 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+							 AT91_PIOB 24 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
+					};
+
+			};
+		};
+	};
 };
 
 &macb0 {
-- 
2.39.5