Tool/software:
Hi Ti
We want to know how to config OSPI flash to be QSPI on EVM board. We try to modify device tree
spi-tx-bus-width = <8>;
spi-rx-bus-width = <8>;
to be
spi-tx-bus-width = <4>;
spi-rx-bus-width = <4>;
and pin mux remove 4 data pins
mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-default-pins {
pinctrl-single,pins = <
J721E_WKUP_IOPAD(0x0000, PIN_OUTPUT, 0) /* MCU_OSPI0_CLK */
J721E_WKUP_IOPAD(0x002c, PIN_OUTPUT, 0) /* MCU_OSPI0_CSn0 */
J721E_WKUP_IOPAD(0x000c, PIN_INPUT, 0) /* MCU_OSPI0_D0 */
J721E_WKUP_IOPAD(0x0010, PIN_INPUT, 0) /* MCU_OSPI0_D1 */
J721E_WKUP_IOPAD(0x0014, PIN_INPUT, 0) /* MCU_OSPI0_D2 */
J721E_WKUP_IOPAD(0x0018, PIN_INPUT, 0) /* MCU_OSPI0_D3 */
J721E_WKUP_IOPAD(0x0008, PIN_INPUT, 0) /* MCU_OSPI0_DQS */
>;
};
But EVM still run in OSPI mode.
