1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * arch/arm/mach-spear3xx/spear3xx.c 4 * 5 * SPEAr3XX machines common source file 6 * 7 * Copyright (C) 2009-2012 ST Microelectronics 8 * Viresh Kumar <vireshk@kernel.org> 9 */ 10 11 #define pr_fmt(fmt) "SPEAr3xx: " fmt 12 13 #include <linux/amba/pl022.h> 14 #include <linux/amba/pl080.h> 15 #include <linux/clk.h> 16 #include <linux/clk/spear.h> 17 #include <linux/io.h> 18 #include <asm/mach/map.h> 19 #include "pl080.h" 20 #include "generic.h" 21 #include "spear.h" 22 #include "misc_regs.h" 23 24 /* ssp device registration */ 25 struct pl022_ssp_controller pl022_plat_data = { 26 .bus_id = 0, 27 .enable_dma = 1, 28 .dma_filter = pl08x_filter_id, 29 .dma_tx_param = "ssp0_tx", 30 .dma_rx_param = "ssp0_rx", 31 }; 32 33 /* dmac device registration */ 34 struct pl08x_platform_data pl080_plat_data = { 35 .memcpy_burst_size = PL08X_BURST_SZ_16, 36 .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS, 37 .memcpy_prot_buff = true, 38 .memcpy_prot_cache = true, 39 .lli_buses = PL08X_AHB1, 40 .mem_buses = PL08X_AHB1, 41 .get_xfer_signal = pl080_get_signal, 42 .put_xfer_signal = pl080_put_signal, 43 }; 44 45 /* 46 * Following will create 16MB static virtual/physical mappings 47 * PHYSICAL VIRTUAL 48 * 0xD0000000 0xFD000000 49 * 0xFC000000 0xFC000000 50 */ 51 struct map_desc spear3xx_io_desc[] __initdata = { 52 { 53 .virtual = (unsigned long)VA_SPEAR_ICM1_2_BASE, 54 .pfn = __phys_to_pfn(SPEAR_ICM1_2_BASE), 55 .length = SZ_16M, 56 .type = MT_DEVICE 57 }, { 58 .virtual = (unsigned long)VA_SPEAR_ICM3_SMI_CTRL_BASE, 59 .pfn = __phys_to_pfn(SPEAR_ICM3_SMI_CTRL_BASE), 60 .length = SZ_16M, 61 .type = MT_DEVICE 62 }, 63 }; 64 65 /* This will create static memory mapping for selected devices */ 66 void __init spear3xx_map_io(void) 67 { 68 iotable_init(spear3xx_io_desc, ARRAY_SIZE(spear3xx_io_desc)); 69 } 70 71 void __init spear3xx_timer_init(void) 72 { 73 char pclk_name[] = "pll3_clk"; 74 struct clk *gpt_clk, *pclk; 75 76 spear3xx_clk_init(MISC_BASE, VA_SPEAR320_SOC_CONFIG_BASE); 77 78 /* get the system timer clock */ 79 gpt_clk = clk_get_sys("gpt0", NULL); 80 if (IS_ERR(gpt_clk)) { 81 pr_err("%s:couldn't get clk for gpt\n", __func__); 82 BUG(); 83 } 84 85 /* get the suitable parent clock for timer*/ 86 pclk = clk_get(NULL, pclk_name); 87 if (IS_ERR(pclk)) { 88 pr_err("%s:couldn't get %s as parent for gpt\n", 89 __func__, pclk_name); 90 BUG(); 91 } 92 93 clk_set_parent(gpt_clk, pclk); 94 clk_put(gpt_clk); 95 clk_put(pclk); 96 97 spear_setup_of_timer(); 98 } 99