linux-kernel - [PATCH 2/2] arm64: dts: ti: k3-j722s-evm: Enable OSPI NOR support

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Date: Fri, 16 Feb 2024 19:25:33 +0530
From: Vaishnav Achath <vaishnav.a@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <vaishnav.a@...com>, <u-kumar1@...com>,
        <s-vadapalli@...com>
Subject: [PATCH 2/2] arm64: dts: ti: k3-j722s-evm: Enable OSPI NOR support

J722S EVM has S28HS512T 64 MiB Octal SPI NOR flash connected
to the OSPI interface, add support for the flash and describe
the partition information as per bootloader.

Signed-off-by: Vaishnav Achath <vaishnav.a@...com>
---
 arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 79 +++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index 9e12a6e9111f..b1c6499c0c9d 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -169,6 +169,23 @@ J722S_IOPAD(0x015c, PIN_INPUT, 0) /* (AD25) MDIO0_MDIO */
 		>;
 	};
 
+	ospi0_pins_default: ospi0-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x0000, PIN_OUTPUT, 0) /* (P23) OSPI0_CLK */
+			J722S_IOPAD(0x002c, PIN_OUTPUT, 0) /* (M25) OSPI0_CSn0 */
+			J722S_IOPAD(0x000c, PIN_INPUT, 0) /* (L25) OSPI0_D0 */
+			J722S_IOPAD(0x0010, PIN_INPUT, 0) /* (N24) OSPI0_D1 */
+			J722S_IOPAD(0x0014, PIN_INPUT, 0) /* (N25) OSPI0_D2 */
+			J722S_IOPAD(0x0018, PIN_INPUT, 0) /* (M24) OSPI0_D3 */
+			J722S_IOPAD(0x001c, PIN_INPUT, 0) /* (N21) OSPI0_D4 */
+			J722S_IOPAD(0x0020, PIN_INPUT, 0) /* (N22) OSPI0_D5 */
+			J722S_IOPAD(0x0024, PIN_INPUT, 0) /* (P21) OSPI0_D6 */
+			J722S_IOPAD(0x0028, PIN_INPUT, 0) /* (N20) OSPI0_D7 */
+			J722S_IOPAD(0x0008, PIN_INPUT, 0) /* (P22) OSPI0_DQS */
+		>;
+		bootph-all;
+	};
+
 	rgmii1_pins_default: rgmii1-default-pins {
 		pinctrl-single,pins = <
 			J722S_IOPAD(0x014c, PIN_INPUT, 0) /* (AC25) RGMII1_RD0 */
@@ -290,6 +307,68 @@ exp1: gpio@23 {
 	};
 };
 
+&ospi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&ospi0_pins_default>;
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-tx-bus-width = <8>;
+		spi-rx-bus-width = <8>;
+		spi-max-frequency = <25000000>;
+		cdns,tshsl-ns = <60>;
+		cdns,tsd2d-ns = <60>;
+		cdns,tchsh-ns = <60>;
+		cdns,tslch-ns = <60>;
+		cdns,read-delay = <4>;
+		bootph-all;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ospi.tiboot3";
+				reg = <0x00 0x80000>;
+			};
+
+			partition@...00 {
+				label = "ospi.tispl";
+				reg = <0x80000 0x200000>;
+			};
+
+			partition@...000 {
+				label = "ospi.u-boot";
+				reg = <0x280000 0x400000>;
+			};
+
+			partition@...000 {
+				label = "ospi.env";
+				reg = <0x680000 0x40000>;
+			};
+
+			partition@...000 {
+				label = "ospi.env.backup";
+				reg = <0x6c0000 0x40000>;
+			};
+
+			partition@...000 {
+				label = "ospi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition@...0000 {
+				label = "ospi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+			};
+		};
+	};
+
+};
+
 &sdhci1 {
 	/* SD/MMC */
 	vmmc-supply = <&vdd_mmc1>;
-- 
2.34.1