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Message-ID: <20250813090300.733295-1-p-bhagat@ti.com>
Date: Wed, 13 Aug 2025 14:33:00 +0530
From: Paresh Bhagat <p-bhagat@...com>
To: <nm@...com>, <vigneshr@...com>, <praneeth@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
<conor+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<khasim@...com>, <v-singh1@...com>, <afd@...com>, <bb@...com>,
<s-k6@...com>
Subject: [PATCH] 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@...com>
---
Boot logs
https://gist.github.com/paresh-bhagat12/262d8c64e692d22c4e48363d246fb083
Tech Ref Manual-https://www.ti.com/lit/pdf/sprujd4
Schematics Link-https://www.ti.com/lit/zip/sprcal5
arch/arm64/boot/dts/ti/k3-am62d2-evm.dts | 86 ++++++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
index daea18b0bc61..aa943ef52fb5 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 @@ aliases {
rtc0 = &wkup_rtc0;
ethernet0 = &cpsw_port1;
ethernet1 = &cpsw_port2;
+ spi0 = &ospi0;
};
chosen {
@@ -367,6 +368,26 @@ usr_led_pins_default: usr-led-default-pins {
AM62DX_IOPAD(0x0244, PIN_INPUT, 7) /* (D18) MMC1_SDWP.GPIO1_49 */
>;
};
+
+ 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 {
@@ -613,3 +634,68 @@ &c7x_0 {
&main_rti4 {
status = "reserved";
};
+
+&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@...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>;
+ bootph-all;
+ };
+ };
+ };
+};
--
2.34.1
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