[PATCH v2] arm64: dts: ti: k3-am62a7-sk: Describe the SPI NAND
Miquel Raynal
miquel.raynal at bootlin.com
Fri Jun 13 11:23:56 PDT 2025
Describe the octal SPI NAND available on the low-power starter kit.
The pinctrl configuration comes from TI fork.
With the current mainline tree, we currently get the following
performances:
eraseblock write speed is 7507 KiB/s
eraseblock read speed is 15802 KiB/s
page write speed is 7551 KiB/s
page read speed is 15609 KiB/s
2 page write speed is 7551 KiB/s
2 page read speed is 15609 KiB/s
erase speed is 284444 KiB/s
2x multi-block erase speed is 512000 KiB/s
Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
---
Changes in v2:
* Added the bootph-all property.
---
arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 42 +++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index b27759026014..3a8b45272526 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -876,3 +876,45 @@ &c7x_0 {
&main_rti4 {
status = "reserved";
};
+
+&fss {
+ status = "okay";
+};
+
+&ospi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ospi0_pins_default>;
+
+ flash at 0 {
+ compatible = "spi-nand";
+ reg = <0>;
+ 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 = <2>;
+ bootph-all;
+ };
+};
+
+&main_pmx0 {
+ ospi0_pins_default: ospi0-default-pins {
+ bootph-all;
+ pinctrl-single,pins = <
+ AM62AX_IOPAD(0x000, PIN_OUTPUT, 0) /* (H24) OSPI0_CLK */
+ AM62AX_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F23) OSPI0_CSn0 */
+ AM62AX_IOPAD(0x00c, PIN_INPUT, 0) /* (E25) OSPI0_D0 */
+ AM62AX_IOPAD(0x010, PIN_INPUT, 0) /* (G24) OSPI0_D1 */
+ AM62AX_IOPAD(0x014, PIN_INPUT, 0) /* (F25) OSPI0_D2 */
+ AM62AX_IOPAD(0x018, PIN_INPUT, 0) /* (F24) OSPI0_D3 */
+ AM62AX_IOPAD(0x01c, PIN_INPUT, 0) /* (J23) OSPI0_D4 */
+ AM62AX_IOPAD(0x020, PIN_INPUT, 0) /* (J25) OSPI0_D5 */
+ AM62AX_IOPAD(0x024, PIN_INPUT, 0) /* (H25) OSPI0_D6 */
+ AM62AX_IOPAD(0x028, PIN_INPUT, 0) /* (J22) OSPI0_D7 */
+ AM62AX_IOPAD(0x008, PIN_INPUT, 0) /* (J24) OSPI0_DQS */
+ >;
+ };
+};
--
2.48.1
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