From: Paresh Bhagat <p-bhagat@ti.com>
Date: Wed, 13 Aug 2025 09:03:00 +0000 (+0530)
Subject: arm64: dts: ti: k3-am62d2-evm: Add support for OSPI flash
X-Git-Tag: v6.18-rc1~147^2~17^2~14
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1a1066f553df1777ffa5ede050457e41972f34f4;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: ti: k3-am62d2-evm: Add support for OSPI flash

AM62D2 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: Paresh Bhagat <p-bhagat@ti.com>
Reviewed-by: Santhosh Kumar K <s-k6@ti.com>
Link: https://patch.msgid.link/20250813090300.733295-1-p-bhagat@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
---

diff --git a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
index 6cb2339869b55..83af889e790ae 100644
--- a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
@@ -25,6 +25,7 @@
 		rtc0 = &wkup_rtc0;
 		ethernet0 = &cpsw_port1;
 		ethernet1 = &cpsw_port2;
+		spi0 = &ospi0;
 	};
 
 	chosen {
@@ -349,6 +350,26 @@
 			AM62DX_IOPAD(0x0258, PIN_OUTPUT, 0) /* (D19) USB1_DRVVBUS */
 		>;
 	};
+
+	ospi0_pins_default: ospi0-default-pins {
+		pinctrl-single,pins = <
+			AM62DX_IOPAD(0x0000, PIN_OUTPUT, 0) /* (L22) OSPI0_CLK */
+			AM62DX_IOPAD(0x002c, PIN_OUTPUT, 0) /* (H21) OSPI0_CSn0 */
+			AM62DX_IOPAD(0x0030, PIN_OUTPUT, 0) /* (G19) OSPI0_CSn1 */
+			AM62DX_IOPAD(0x0034, PIN_OUTPUT, 0) /* (K20) OSPI0_CSn2 */
+			AM62DX_IOPAD(0x0038, PIN_OUTPUT, 0) /* (G20) OSPI0_CSn3 */
+			AM62DX_IOPAD(0x000c, PIN_INPUT, 0) /* (J21) OSPI0_D0 */
+			AM62DX_IOPAD(0x0010, PIN_INPUT, 0) /* (J18) OSPI0_D1 */
+			AM62DX_IOPAD(0x0014, PIN_INPUT, 0) /* (J19) OSPI0_D2 */
+			AM62DX_IOPAD(0x0018, PIN_INPUT, 0) /* (H18) OSPI0_D3 */
+			AM62DX_IOPAD(0x001c, PIN_INPUT, 0) /* (K21) OSPI0_D4 */
+			AM62DX_IOPAD(0x0020, PIN_INPUT, 0) /* (H19) OSPI0_D5 */
+			AM62DX_IOPAD(0x0024, PIN_INPUT, 0) /* (J20) OSPI0_D6 */
+			AM62DX_IOPAD(0x0028, PIN_INPUT, 0) /* (J22) OSPI0_D7 */
+			AM62DX_IOPAD(0x0008, PIN_INPUT, 0) /* (L21) OSPI0_DQS */
+		>;
+		bootph-all;
+	};
 };
 
 &mcu_gpio0 {
@@ -548,6 +569,71 @@
 	};
 };
 
+&fss {
+	status = "okay";
+};
+
+&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>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ospi.tiboot3";
+				reg = <0x0 0x80000>;
+			};
+
+			partition@80000 {
+				label = "ospi.tispl";
+				reg = <0x80000 0x200000>;
+			};
+
+			partition@280000 {
+				label = "ospi.u-boot";
+				reg = <0x280000 0x400000>;
+			};
+
+			partition@680000 {
+				label = "ospi.env";
+				reg = <0x680000 0x40000>;
+			};
+
+			partition@6c0000 {
+				label = "ospi.env.backup";
+				reg = <0x6c0000 0x40000>;
+			};
+
+			partition@800000 {
+				label = "ospi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition@3fc0000 {
+				label = "ospi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+				bootph-all;
+			};
+		};
+	};
+};
+
 &wkup_r5fss0_core0 {
 	bootph-pre-ram;
 };