1 // SPDX-License-Identifier: GPL-2.0-only
3 * arch/arm/mach-spear6xx/spear6xx.c
5 * SPEAr6XX machines common source file
7 * Copyright (C) 2009 ST Microelectronics
8 * Rajeev Kumar<rajeev-dlh.kumar@st.com>
10 * Copyright 2012 Stefan Roese <sr@denx.de>
13 #include <linux/amba/pl08x.h>
14 #include <linux/clk.h>
15 #include <linux/clk/spear.h>
16 #include <linux/err.h>
18 #include <linux/of_address.h>
19 #include <linux/of_platform.h>
20 #include <linux/amba/pl080.h>
21 #include <asm/mach/arch.h>
22 #include <asm/mach/time.h>
23 #include <asm/mach/map.h>
27 #include "misc_regs.h"
29 /* dmac device registration */
30 static struct pl08x_channel_data spear600_dma_info[] = {
36 .periph_buses = PL08X_AHB1,
42 .periph_buses = PL08X_AHB1,
48 .periph_buses = PL08X_AHB1,
54 .periph_buses = PL08X_AHB1,
60 .periph_buses = PL08X_AHB1,
66 .periph_buses = PL08X_AHB1,
72 .periph_buses = PL08X_AHB2,
78 .periph_buses = PL08X_AHB2,
84 .periph_buses = PL08X_AHB1,
90 .periph_buses = PL08X_AHB1,
96 .periph_buses = PL08X_AHB1,
102 .periph_buses = PL08X_AHB1,
108 .periph_buses = PL08X_AHB1,
114 .periph_buses = PL08X_AHB2,
120 .periph_buses = PL08X_AHB1,
122 .bus_id = "from_jpeg",
126 .periph_buses = PL08X_AHB1,
132 .periph_buses = PL08X_AHB1,
138 .periph_buses = PL08X_AHB1,
144 .periph_buses = PL08X_AHB1,
150 .periph_buses = PL08X_AHB1,
156 .periph_buses = PL08X_AHB1,
162 .periph_buses = PL08X_AHB1,
168 .periph_buses = PL08X_AHB1,
174 .periph_buses = PL08X_AHB1,
180 .periph_buses = PL08X_AHB1,
186 .periph_buses = PL08X_AHB1,
192 .periph_buses = PL08X_AHB1,
198 .periph_buses = PL08X_AHB1,
204 .periph_buses = PL08X_AHB1,
210 .periph_buses = PL08X_AHB1,
216 .periph_buses = PL08X_AHB1,
222 .periph_buses = PL08X_AHB1,
228 .periph_buses = PL08X_AHB2,
234 .periph_buses = PL08X_AHB2,
240 .periph_buses = PL08X_AHB2,
246 .periph_buses = PL08X_AHB2,
252 .periph_buses = PL08X_AHB2,
258 .periph_buses = PL08X_AHB2,
264 .periph_buses = PL08X_AHB2,
270 .periph_buses = PL08X_AHB2,
276 .periph_buses = PL08X_AHB2,
282 .periph_buses = PL08X_AHB2,
288 .periph_buses = PL08X_AHB2,
294 .periph_buses = PL08X_AHB2,
300 .periph_buses = PL08X_AHB2,
306 .periph_buses = PL08X_AHB2,
312 .periph_buses = PL08X_AHB2,
318 .periph_buses = PL08X_AHB2,
322 static struct pl08x_platform_data spear6xx_pl080_plat_data = {
323 .memcpy_burst_size = PL08X_BURST_SZ_16,
324 .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
325 .memcpy_prot_buff = true,
326 .memcpy_prot_cache = true,
327 .lli_buses = PL08X_AHB1,
328 .mem_buses = PL08X_AHB1,
329 .get_xfer_signal = pl080_get_signal,
330 .put_xfer_signal = pl080_put_signal,
331 .slave_channels = spear600_dma_info,
332 .num_slave_channels = ARRAY_SIZE(spear600_dma_info),
336 * Following will create 16MB static virtual/physical mappings
338 * 0xF0000000 0xF0000000
339 * 0xF1000000 0xF1000000
340 * 0xD0000000 0xFD000000
341 * 0xFC000000 0xFC000000
343 static struct map_desc spear6xx_io_desc[] __initdata = {
345 .virtual = (unsigned long)VA_SPEAR6XX_ML_CPU_BASE,
346 .pfn = __phys_to_pfn(SPEAR_ICM3_ML1_2_BASE),
347 .length = 2 * SZ_16M,
350 .virtual = (unsigned long)VA_SPEAR_ICM1_2_BASE,
351 .pfn = __phys_to_pfn(SPEAR_ICM1_2_BASE),
355 .virtual = (unsigned long)VA_SPEAR_ICM3_SMI_CTRL_BASE,
356 .pfn = __phys_to_pfn(SPEAR_ICM3_SMI_CTRL_BASE),
362 /* This will create static memory mapping for selected devices */
363 static void __init spear6xx_map_io(void)
365 iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
368 static void __init spear6xx_timer_init(void)
370 char pclk_name[] = "pll3_clk";
371 struct clk *gpt_clk, *pclk;
373 spear6xx_clk_init(MISC_BASE);
375 /* get the system timer clock */
376 gpt_clk = clk_get_sys("gpt0", NULL);
377 if (IS_ERR(gpt_clk)) {
378 pr_err("%s:couldn't get clk for gpt\n", __func__);
382 /* get the suitable parent clock for timer*/
383 pclk = clk_get(NULL, pclk_name);
385 pr_err("%s:couldn't get %s as parent for gpt\n",
386 __func__, pclk_name);
390 clk_set_parent(gpt_clk, pclk);
394 spear_setup_of_timer();
397 /* Add auxdata to pass platform data */
398 static struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
399 OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
400 &spear6xx_pl080_plat_data),
404 static void __init spear600_dt_init(void)
406 of_platform_default_populate(NULL, spear6xx_auxdata_lookup, NULL);
409 static const char *spear600_dt_board_compat[] = {
414 DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)")
415 .map_io = spear6xx_map_io,
416 .init_time = spear6xx_timer_init,
417 .init_machine = spear600_dt_init,
418 .restart = spear_restart,
419 .dt_compat = spear600_dt_board_compat,