/* * Keymile km82xx support * Copyright 2008-2011 DENX Software Engineering GmbH * Author: Heiko Schocher * * based on code from: * Copyright 2007 Freescale Semiconductor, Inc. * Author: Scott Wood * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pq2.h" static void __init km82xx_pic_init(void) { struct device_node *np = of_find_compatible_node(NULL, NULL, "fsl,pq2-pic"); if (!np) { pr_err("PIC init: can not find cpm-pic node\n"); return; } cpm2_pic_init(np); of_node_put(np); } struct cpm_pin { int port, pin, flags; }; static __initdata struct cpm_pin km82xx_pins[] = { /* SMC1 */ {2, 4, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* SMC2 */ {0, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {0, 9, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* SCC1 */ {2, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, /* SCC4 */ {2, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {3, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {3, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* FCC1 */ {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* FCC2 */ {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* MDC */ {0, 13, CPM_PIN_OUTPUT | CPM_PIN_GPIO}, #if defined(CONFIG_I2C_CPM) /* I2C */ {3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN}, {3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN}, #endif /* USB */ {0, 10, CPM_PIN_OUTPUT | CPM_PIN_GPIO}, /* FULL_SPEED */ {0, 11, CPM_PIN_OUTPUT | CPM_PIN_GPIO}, /*/SLAVE */ {2, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXN */ {2, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXP */ {2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* /OE */ {2, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXCLK */ {3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* TXP */ {3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* TXN */ {3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXD */ /* SPI */ {3, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY},/* SPI_MISO PD16 */ {3, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY},/* SPI_MOSI PD17 */ {3, 18, CPM_PIN_INPUT | CPM_PIN_SECONDARY},/* SPI_CLK PD18 */ }; static void __init init_ioports(void) { int i; for (i = 0; i < ARRAY_SIZE(km82xx_pins); i++) { const struct cpm_pin *pin = &km82xx_pins[i]; cpm2_set_pin(pin->port, pin->pin, pin->flags); } cpm2_smc_clk_setup(CPM_CLK_SMC2, CPM_BRG8); cpm2_smc_clk_setup(CPM_CLK_SMC1, CPM_BRG7); cpm2_clk_setup(CPM_CLK_SCC1, CPM_CLK11, CPM_CLK_RX); cpm2_clk_setup(CPM_CLK_SCC1, CPM_CLK11, CPM_CLK_TX); cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_RTX); cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK7, CPM_CLK_RX); cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK8, CPM_CLK_TX); cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_RX); cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_TX); cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX); cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX); /* Force USB FULL SPEED bit to '1' */ setbits32(&cpm2_immr->im_ioport.iop_pdata, 1 << (31 - 10)); /* clear USB_SLAVE */ clrbits32(&cpm2_immr->im_ioport.iop_pdata, 1 << (31 - 11)); } static void __init km82xx_setup_arch(void) { if (ppc_md.progress) ppc_md.progress("km82xx_setup_arch()", 0); cpm2_reset(); /* When this is set, snooping CPM DMA from RAM causes * machine checks. See erratum SIU18. */ clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP); init_ioports(); if (ppc_md.progress) ppc_md.progress("km82xx_setup_arch(), finish", 0); } static __initdata struct of_device_id of_bus_ids[] = { { .compatible = "simple-bus", }, {}, }; static int __init declare_of_platform_devices(void) { of_platform_bus_probe(NULL, of_bus_ids, NULL); return 0; } machine_device_initcall(km82xx, declare_of_platform_devices); /* * Called very early, device-tree isn't unflattened */ static int __init km82xx_probe(void) { unsigned long root = of_get_flat_dt_root(); return of_flat_dt_is_compatible(root, "keymile,km82xx"); } define_machine(km82xx) { .name = "Keymile km82xx", .probe = km82xx_probe, .setup_arch = km82xx_setup_arch, .init_IRQ = km82xx_pic_init, .get_irq = cpm2_get_irq, .calibrate_decr = generic_calibrate_decr, .restart = pq2_restart, .progress = udbg_progress, };