// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Keymile km82xx support
* Copyright 2008-2011 DENX Software Engineering GmbH
* Author: Heiko Schocher <hs@denx.de>
*
* based on code from:
* Copyright 2007 Freescale Semiconductor, Inc.
* Author: Scott Wood <scottwood@freescale.com>
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
#include <linux/io.h>
#include <asm /cpm2.h>
#include <asm /udbg.h>
#include <asm /machdep.h>
#include <linux/time.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/cpm2_pic.h>
#include "pq2.h"
static void __init km82xx_pic_init(void )
{
struct device_node *np __free(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);
}
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 const struct of_device_id of_bus_ids[] __initconst = {
{ .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);
define_machine(km82xx)
{
.name = "Keymile km82xx" ,
.compatible = "keymile,km82xx" ,
.setup_arch = km82xx_setup_arch,
.init_IRQ = km82xx_pic_init,
.get_irq = cpm2_get_irq,
.restart = pq2_restart,
.progress = udbg_progress,
};
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(vorverarbeitet am 2026-06-08)
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