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d9909ebe65
Device drivers should not access MMIO registers through hardcoded platform specific address constants. Instead, we can pass the MMIO token to the spear clock driver in the initialization routine to contain that knowledge in the platform code itself. Ideally, the clock driver would use of_iomap() or similar to get the address, and that can be used later, but for now, this is the minimal change. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* arch/arm/mach-spear13xx/spear1310.c
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*
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* SPEAr1310 machine source file
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*
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* Copyright (C) 2012 ST Microelectronics
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* Viresh Kumar <viresh.linux@gmail.com>
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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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#define pr_fmt(fmt) "SPEAr1310: " fmt
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#include <linux/amba/pl022.h>
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#include <linux/irqchip.h>
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#include <linux/of_platform.h>
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#include <linux/pata_arasan_cf_data.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include "generic.h"
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#include <mach/spear.h>
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/* Base addresses */
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#define SPEAR1310_SSP1_BASE UL(0x5D400000)
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#define SPEAR1310_SATA0_BASE UL(0xB1000000)
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#define SPEAR1310_SATA1_BASE UL(0xB1800000)
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#define SPEAR1310_SATA2_BASE UL(0xB4000000)
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#define SPEAR1310_RAS_GRP1_BASE UL(0xD8000000)
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#define VA_SPEAR1310_RAS_GRP1_BASE UL(0xFA000000)
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static struct arasan_cf_pdata cf_pdata = {
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.cf_if_clk = CF_IF_CLK_166M,
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.quirk = CF_BROKEN_UDMA,
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.dma_priv = &cf_dma_priv,
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};
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/* ssp device registration */
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static struct pl022_ssp_controller ssp1_plat_data = {
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.enable_dma = 0,
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};
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/* Add SPEAr1310 auxdata to pass platform data */
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static struct of_dev_auxdata spear1310_auxdata_lookup[] __initdata = {
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OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_pdata),
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OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data),
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OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data),
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OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data),
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OF_DEV_AUXDATA("arm,pl022", SPEAR1310_SSP1_BASE, NULL, &ssp1_plat_data),
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{}
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};
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static void __init spear1310_dt_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table,
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spear1310_auxdata_lookup, NULL);
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}
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static const char * const spear1310_dt_board_compat[] = {
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"st,spear1310",
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"st,spear1310-evb",
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NULL,
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};
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/*
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* Following will create 16MB static virtual/physical mappings
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* PHYSICAL VIRTUAL
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* 0xD8000000 0xFA000000
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*/
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struct map_desc spear1310_io_desc[] __initdata = {
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{
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.virtual = VA_SPEAR1310_RAS_GRP1_BASE,
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.pfn = __phys_to_pfn(SPEAR1310_RAS_GRP1_BASE),
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.length = SZ_16M,
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.type = MT_DEVICE
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},
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};
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static void __init spear1310_map_io(void)
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{
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iotable_init(spear1310_io_desc, ARRAY_SIZE(spear1310_io_desc));
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spear13xx_map_io();
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}
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DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
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.smp = smp_ops(spear13xx_smp_ops),
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.map_io = spear1310_map_io,
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.init_irq = irqchip_init,
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.init_time = spear13xx_timer_init,
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.init_machine = spear1310_dt_init,
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.restart = spear_restart,
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.dt_compat = spear1310_dt_board_compat,
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MACHINE_END
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