2024-02-06 09:24:29

by Sinthu Raja

Subject: [PATCH] arm64: dts: ti: k3-am68-sk-som: Add support for OSPI flash

From: Sinthu Raja <[email protected]>

AM68 SK has an OSPI NOR flash on its SOM connected to OSPI0 instance.
Enable support for the same. Also, describe the OSPI flash partition
information through the device tree, according to the offsets in the
bootloader.

Signed-off-by: Sinthu Raja <[email protected]>
---
arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi | 79 ++++++++++++++++++++++
1 file changed, 79 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi b/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi
index 20861a0a46b0..84011d5e1b3b 100644
--- a/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi
@@ -130,6 +130,25 @@ rtos_ipc_memory_region: ipc-memories@a8000000 {
};
};

+&wkup_pmx0 {
+ mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
+ pinctrl-single,pins = <
+ J721S2_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (D19) MCU_OSPI0_CLK */
+ J721S2_WKUP_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F15) MCU_OSPI0_CSn0 */
+ J721S2_WKUP_IOPAD(0x00c, PIN_INPUT, 0) /* (C19) MCU_OSPI0_D0 */
+ J721S2_WKUP_IOPAD(0x010, PIN_INPUT, 0) /* (F16) MCU_OSPI0_D1 */
+ J721S2_WKUP_IOPAD(0x014, PIN_INPUT, 0) /* (G15) MCU_OSPI0_D2 */
+ J721S2_WKUP_IOPAD(0x018, PIN_INPUT, 0) /* (F18) MCU_OSPI0_D3 */
+ J721S2_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (E19) MCU_OSPI0_D4 */
+ J721S2_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (G19) MCU_OSPI0_D5 */
+ J721S2_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (F19) MCU_OSPI0_D6 */
+ J721S2_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (F20) MCU_OSPI0_D7 */
+ J721S2_WKUP_IOPAD(0x008, PIN_INPUT, 0) /* (E18) MCU_OSPI0_DQS */
+ J721S2_WKUP_IOPAD(0x004, PIN_INPUT, 0) /* (E20) MCU_OSPI0_LBCLKO */
+ >;
+ };
+};
+
&wkup_pmx2 {
wkup_i2c0_pins_default: wkup-i2c0-default-pins {
pinctrl-single,pins = <
@@ -152,6 +171,66 @@ eeprom@51 {
};
};

+&ospi0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;
+
+ 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>;
+ };
+ };
+ };
+};
+
&mailbox0_cluster0 {
status = "okay";
interrupts = <436>;
--
2.36.1

2024-02-07 09:42:02

by Kumar, Udit

Subject: Re: [PATCH] arm64: dts: ti: k3-am68-sk-som: Add support for OSPI flash

On 2/6/2024 2:53 PM, Sinthu Raja wrote:
> From: Sinthu Raja <[email protected]>
>
> AM68 SK has an OSPI NOR flash on its SOM connected to OSPI0 instance.
> Enable support for the same. Also, describe the OSPI flash partition
> information through the device tree, according to the offsets in the
> bootloader.
>
> Signed-off-by: Sinthu Raja <[email protected]>
> ---
> arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi | 79 ++++++++++++++++++++++
> 1 file changed, 79 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi b/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi
> index 20861a0a46b0..84011d5e1b3b 100644
> --- a/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi
> @@ -130,6 +130,25 @@ rtos_ipc_memory_region: ipc-memories@a8000000 {
> };
> };
>
> +&wkup_pmx0 {
> + mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
> + pinctrl-single,pins = <
> + J721S2_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (D19) MCU_OSPI0_CLK */
> + J721S2_WKUP_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F15) MCU_OSPI0_CSn0 */
> + J721S2_WKUP_IOPAD(0x00c, PIN_INPUT, 0) /* (C19) MCU_OSPI0_D0 */
> + J721S2_WKUP_IOPAD(0x010, PIN_INPUT, 0) /* (F16) MCU_OSPI0_D1 */
> + J721S2_WKUP_IOPAD(0x014, PIN_INPUT, 0) /* (G15) MCU_OSPI0_D2 */
> + J721S2_WKUP_IOPAD(0x018, PIN_INPUT, 0) /* (F18) MCU_OSPI0_D3 */
> + J721S2_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (E19) MCU_OSPI0_D4 */
> + J721S2_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (G19) MCU_OSPI0_D5 */
> + J721S2_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (F19) MCU_OSPI0_D6 */
> + J721S2_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (F20) MCU_OSPI0_D7 */
> + J721S2_WKUP_IOPAD(0x008, PIN_INPUT, 0) /* (E18) MCU_OSPI0_DQS */
> + J721S2_WKUP_IOPAD(0x004, PIN_INPUT, 0) /* (E20) MCU_OSPI0_LBCLKO */


E20 is seems to be not connected  . Refer page-11 of SOM schematic
(PROC131 001 AM68 SK, rev E2)

Can we think of to remove pin, which is not connected .


> + >;
> + };
> +};
> +
> &wkup_pmx2 {
> wkup_i2c0_pins_default: wkup-i2c0-default-pins {
> pinctrl-single,pins = <
> @@ -152,6 +171,66 @@ eeprom@51 {
> };
> };
>
> +&ospi0 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;
> +
> + 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>;
> + };
> + };
> + };
> +};
> +
> &mailbox0_cluster0 {
> status = "okay";
> interrupts = <436>;