u-boot/arch/arm/mach-uniphier/board_early_init_f.c
Masahiro Yamada e64a6b1141 ARM: uniphier: add external IRQ setup code
I will carry this work-around until it is cared in the kernel.
This looks up the AIDET node and sets up a register to handle
active low interrupt signals.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-07-02 05:44:30 +09:00

126 lines
2.4 KiB
C

/*
* Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <libfdt.h>
#include <linux/io.h>
#include "init.h"
#include "micro-support-card.h"
#include "soc-info.h"
DECLARE_GLOBAL_DATA_PTR;
static void uniphier_setup_xirq(void)
{
const void *fdt = gd->fdt_blob;
int soc_node, aidet_node;
const u32 *val;
unsigned long aidet_base;
u32 tmp;
soc_node = fdt_path_offset(fdt, "/soc");
if (soc_node < 0)
return;
aidet_node = fdt_subnode_offset_namelen(fdt, soc_node, "aidet", 5);
if (aidet_node < 0)
return;
val = fdt_getprop(fdt, aidet_node, "reg", NULL);
if (!val)
return;
aidet_base = fdt32_to_cpu(*val);
tmp = readl(aidet_base + 8); /* AIDET DETCONFR2 */
tmp |= 0x00ff0000; /* Set XIRQ0-7 low active */
writel(tmp, aidet_base + 8);
tmp = readl(0x55000090); /* IRQCTL */
tmp |= 0x000000ff;
writel(tmp, 0x55000090);
}
int board_early_init_f(void)
{
led_puts("U0");
switch (uniphier_get_soc_type()) {
#if defined(CONFIG_ARCH_UNIPHIER_SLD3)
case SOC_UNIPHIER_SLD3:
uniphier_sld3_pin_init();
led_puts("U1");
uniphier_ld4_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD4)
case SOC_UNIPHIER_LD4:
uniphier_ld4_pin_init();
led_puts("U1");
uniphier_ld4_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PRO4)
case SOC_UNIPHIER_PRO4:
uniphier_pro4_pin_init();
led_puts("U1");
uniphier_pro4_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_SLD8)
case SOC_UNIPHIER_SLD8:
uniphier_sld8_pin_init();
led_puts("U1");
uniphier_ld4_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PRO5)
case SOC_UNIPHIER_PRO5:
uniphier_pro5_pin_init();
led_puts("U1");
uniphier_pro5_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PXS2)
case SOC_UNIPHIER_PXS2:
uniphier_pxs2_pin_init();
led_puts("U1");
uniphier_pxs2_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD6B)
case SOC_UNIPHIER_LD6B:
uniphier_ld6b_pin_init();
led_puts("U1");
uniphier_pxs2_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD11)
case SOC_UNIPHIER_LD11:
uniphier_ld20_pin_init();
led_puts("U1");
uniphier_ld11_clk_init();
break;
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD20)
case SOC_UNIPHIER_LD20:
uniphier_ld20_pin_init();
led_puts("U1");
uniphier_ld20_clk_init();
cci500_init(2);
break;
#endif
default:
break;
}
uniphier_setup_xirq();
led_puts("U2");
return 0;
}