2 * arch/arm/mach-spear6xx/spear6xx.c
4 * SPEAr6XX machines common source file
6 * Copyright (C) 2009 ST Microelectronics
7 * Rajeev Kumar<rajeev-dlh.kumar@st.com>
9 * Copyright 2012 Stefan Roese <sr@denx.de>
11 * This file is licensed under the terms of the GNU General Public
12 * License version 2. This program is licensed "as is" without any
13 * warranty of any kind, whether express or implied.
16 #include <linux/amba/pl08x.h>
17 #include <linux/clk.h>
18 #include <linux/err.h>
20 #include <linux/of_address.h>
21 #include <linux/of_platform.h>
22 #include <linux/amba/pl080.h>
23 #include <asm/mach/arch.h>
24 #include <asm/mach/time.h>
25 #include <asm/mach/map.h>
28 #include <mach/spear.h>
29 #include <mach/misc_regs.h>
31 /* dmac device registration */
32 static struct pl08x_channel_data spear600_dma_info[] = {
38 .periph_buses = PL08X_AHB1,
44 .periph_buses = PL08X_AHB1,
50 .periph_buses = PL08X_AHB1,
56 .periph_buses = PL08X_AHB1,
62 .periph_buses = PL08X_AHB1,
68 .periph_buses = PL08X_AHB1,
74 .periph_buses = PL08X_AHB2,
80 .periph_buses = PL08X_AHB2,
86 .periph_buses = PL08X_AHB1,
92 .periph_buses = PL08X_AHB1,
98 .periph_buses = PL08X_AHB1,
104 .periph_buses = PL08X_AHB1,
110 .periph_buses = PL08X_AHB1,
116 .periph_buses = PL08X_AHB2,
122 .periph_buses = PL08X_AHB1,
124 .bus_id = "from_jpeg",
128 .periph_buses = PL08X_AHB1,
134 .periph_buses = PL08X_AHB1,
140 .periph_buses = PL08X_AHB1,
146 .periph_buses = PL08X_AHB1,
152 .periph_buses = PL08X_AHB1,
158 .periph_buses = PL08X_AHB1,
164 .periph_buses = PL08X_AHB1,
170 .periph_buses = PL08X_AHB1,
176 .periph_buses = PL08X_AHB1,
182 .periph_buses = PL08X_AHB1,
188 .periph_buses = PL08X_AHB1,
194 .periph_buses = PL08X_AHB1,
200 .periph_buses = PL08X_AHB1,
206 .periph_buses = PL08X_AHB1,
212 .periph_buses = PL08X_AHB1,
218 .periph_buses = PL08X_AHB1,
224 .periph_buses = PL08X_AHB1,
230 .periph_buses = PL08X_AHB2,
236 .periph_buses = PL08X_AHB2,
242 .periph_buses = PL08X_AHB2,
248 .periph_buses = PL08X_AHB2,
254 .periph_buses = PL08X_AHB2,
260 .periph_buses = PL08X_AHB2,
266 .periph_buses = PL08X_AHB2,
272 .periph_buses = PL08X_AHB2,
278 .periph_buses = PL08X_AHB2,
284 .periph_buses = PL08X_AHB2,
290 .periph_buses = PL08X_AHB2,
296 .periph_buses = PL08X_AHB2,
302 .periph_buses = PL08X_AHB2,
308 .periph_buses = PL08X_AHB2,
314 .periph_buses = PL08X_AHB2,
320 .periph_buses = PL08X_AHB2,
324 static struct pl08x_platform_data spear6xx_pl080_plat_data = {
325 .memcpy_burst_size = PL08X_BURST_SZ_16,
326 .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
327 .memcpy_prot_buff = true,
328 .memcpy_prot_cache = true,
329 .lli_buses = PL08X_AHB1,
330 .mem_buses = PL08X_AHB1,
331 .get_xfer_signal = pl080_get_signal,
332 .put_xfer_signal = pl080_put_signal,
333 .slave_channels = spear600_dma_info,
334 .num_slave_channels = ARRAY_SIZE(spear600_dma_info),
338 * Following will create 16MB static virtual/physical mappings
340 * 0xF0000000 0xF0000000
341 * 0xF1000000 0xF1000000
342 * 0xD0000000 0xFD000000
343 * 0xFC000000 0xFC000000
345 struct map_desc spear6xx_io_desc[] __initdata = {
347 .virtual = (unsigned long)VA_SPEAR6XX_ML_CPU_BASE,
348 .pfn = __phys_to_pfn(SPEAR_ICM3_ML1_2_BASE),
349 .length = 2 * SZ_16M,
352 .virtual = (unsigned long)VA_SPEAR_ICM1_2_BASE,
353 .pfn = __phys_to_pfn(SPEAR_ICM1_2_BASE),
357 .virtual = (unsigned long)VA_SPEAR_ICM3_SMI_CTRL_BASE,
358 .pfn = __phys_to_pfn(SPEAR_ICM3_SMI_CTRL_BASE),
364 /* This will create static memory mapping for selected devices */
365 void __init spear6xx_map_io(void)
367 iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
370 void __init spear6xx_timer_init(void)
372 char pclk_name[] = "pll3_clk";
373 struct clk *gpt_clk, *pclk;
375 spear6xx_clk_init(MISC_BASE);
377 /* get the system timer clock */
378 gpt_clk = clk_get_sys("gpt0", NULL);
379 if (IS_ERR(gpt_clk)) {
380 pr_err("%s:couldn't get clk for gpt\n", __func__);
384 /* get the suitable parent clock for timer*/
385 pclk = clk_get(NULL, pclk_name);
387 pr_err("%s:couldn't get %s as parent for gpt\n",
388 __func__, pclk_name);
392 clk_set_parent(gpt_clk, pclk);
396 spear_setup_of_timer();
399 /* Add auxdata to pass platform data */
400 struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
401 OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
402 &spear6xx_pl080_plat_data),
406 static void __init spear600_dt_init(void)
408 of_platform_default_populate(NULL, spear6xx_auxdata_lookup, NULL);
411 static const char *spear600_dt_board_compat[] = {
416 DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)")
417 .map_io = spear6xx_map_io,
418 .init_time = spear6xx_timer_init,
419 .init_machine = spear600_dt_init,
420 .restart = spear_restart,
421 .dt_compat = spear600_dt_board_compat,