np = of_find_compatible_node(NULL, NULL, "fsl,p1021-guts"); if (np) {
guts = of_iomap(np, 0); if (!guts)
pr_err("twr_p1025: could not map global utilities register\n"); else { /* P1025 has pins muxed for QE and other functions. To * enable QE UEC mode, we need to set bit QE0 for UCC1 * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9 * and QE12 for QE MII management signals in PMUXCR * register.
* Set QE mux bits in PMUXCR */
setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
MPC85xx_PMUXCR_QE(3) |
MPC85xx_PMUXCR_QE(9) |
MPC85xx_PMUXCR_QE(12));
iounmap(guts);
#if IS_ENABLED(CONFIG_SERIAL_QE) /* On P1025TWR board, the UCC7 acted as UART port. * However, The UCC7's CTS pin is low level in default, * it will impact the transmission in full duplex * communication. So disable the Flow control pin PA18. * The UCC7 UART just can use RXD and TXD pins.
*/
par_io_config_pin(0, 18, 0, 0, 0, 0); #endif /* Drive PB29 to CPLD low - CPLD will then change
* muxing from LBC to QE */
par_io_config_pin(1, 29, 1, 0, 0, 0);
par_io_data_set(1, 29, 0);
}
of_node_put(np);
}
} #endif #endif/* CONFIG_QUICC_ENGINE */
pr_info("TWR-P1025 board from Freescale Semiconductor\n");
}
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