9652e8bd16
This patch adds a generic target for SPEAr600 board that can be configured via the device-tree. Currently the following devices are supported via the devicetree: - VIC interrupts - PL011 UART - PL061 GPIO - Synopsys DW I2C - Synopsys DW ethernet Other peripheral devices (e.g. SMI flash, FSMC NAND flash etc) will follow in later patches. Only the spear600-evb is currently supported. Other SPEAr600 based boards will follow later. Since the current mainline SPEAr600 code only supports the SPEAr600 evaluation board, with nearly zero peripheral devices (only UART and GPIO), it makes sense to switch over to DT based configuration completely now. So this patch also removes all non-DT stuff, mainly platform device data. The files spear600.c and spear600_evb.c are removed completely. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
123 lines
3 KiB
C
123 lines
3 KiB
C
/*
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* arch/arm/mach-spear6xx/spear6xx.c
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*
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* SPEAr6XX machines common source file
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*
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* Copyright (C) 2009 ST Microelectronics
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* Rajeev Kumar<rajeev-dlh.kumar@st.com>
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*
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* Copyright 2012 Stefan Roese <sr@denx.de>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <asm/hardware/vic.h>
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#include <asm/mach/arch.h>
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#include <mach/generic.h>
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#include <mach/hardware.h>
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/* Following will create static virtual/physical mappings */
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static struct map_desc spear6xx_io_desc[] __initdata = {
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{
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.virtual = VA_SPEAR6XX_ICM1_UART0_BASE,
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.pfn = __phys_to_pfn(SPEAR6XX_ICM1_UART0_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = VA_SPEAR6XX_CPU_VIC_PRI_BASE,
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.pfn = __phys_to_pfn(SPEAR6XX_CPU_VIC_PRI_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = VA_SPEAR6XX_CPU_VIC_SEC_BASE,
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.pfn = __phys_to_pfn(SPEAR6XX_CPU_VIC_SEC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = VA_SPEAR6XX_ICM3_SYS_CTRL_BASE,
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.pfn = __phys_to_pfn(SPEAR6XX_ICM3_SYS_CTRL_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = VA_SPEAR6XX_ICM3_MISC_REG_BASE,
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.pfn = __phys_to_pfn(SPEAR6XX_ICM3_MISC_REG_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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},
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};
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/* This will create static memory mapping for selected devices */
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void __init spear6xx_map_io(void)
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{
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iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
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/* This will initialize clock framework */
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spear6xx_clk_init();
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}
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static void __init spear6xx_timer_init(void)
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{
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char pclk_name[] = "pll3_48m_clk";
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struct clk *gpt_clk, *pclk;
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/* get the system timer clock */
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gpt_clk = clk_get_sys("gpt0", NULL);
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if (IS_ERR(gpt_clk)) {
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pr_err("%s:couldn't get clk for gpt\n", __func__);
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BUG();
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}
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/* get the suitable parent clock for timer*/
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pclk = clk_get(NULL, pclk_name);
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if (IS_ERR(pclk)) {
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pr_err("%s:couldn't get %s as parent for gpt\n",
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__func__, pclk_name);
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BUG();
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}
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clk_set_parent(gpt_clk, pclk);
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clk_put(gpt_clk);
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clk_put(pclk);
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spear_setup_timer();
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}
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struct sys_timer spear6xx_timer = {
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.init = spear6xx_timer_init,
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};
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static void __init spear600_dt_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static const char *spear600_dt_board_compat[] = {
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"st,spear600",
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NULL
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};
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static const struct of_device_id vic_of_match[] __initconst = {
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{ .compatible = "arm,pl190-vic", .data = vic_of_init, },
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{ /* Sentinel */ }
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};
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static void __init spear6xx_dt_init_irq(void)
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{
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of_irq_init(vic_of_match);
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}
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DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)")
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.map_io = spear6xx_map_io,
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.init_irq = spear6xx_dt_init_irq,
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.handle_irq = vic_handle_irq,
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.timer = &spear6xx_timer,
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.init_machine = spear600_dt_init,
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.restart = spear_restart,
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.dt_compat = spear600_dt_board_compat,
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MACHINE_END
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