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