/* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. * * Parts of this file are based on Ralink's 2.6.21 BSP * * Copyright (C) 2008-2011 Gabor Juhos * Copyright (C) 2008 Imre Kaloz * Copyright (C) 2013 John Crispin */ #include #include #include #include #include #include #include "common.h" enum rt305x_soc_type rt305x_soc; static struct ralink_pinmux_grp mode_mux[] = { { .name = "i2c", .mask = RT305X_GPIO_MODE_I2C, .gpio_first = RT305X_GPIO_I2C_SD, .gpio_last = RT305X_GPIO_I2C_SCLK, }, { .name = "spi", .mask = RT305X_GPIO_MODE_SPI, .gpio_first = RT305X_GPIO_SPI_EN, .gpio_last = RT305X_GPIO_SPI_CLK, }, { .name = "uartlite", .mask = RT305X_GPIO_MODE_UART1, .gpio_first = RT305X_GPIO_UART1_TXD, .gpio_last = RT305X_GPIO_UART1_RXD, }, { .name = "jtag", .mask = RT305X_GPIO_MODE_JTAG, .gpio_first = RT305X_GPIO_JTAG_TDO, .gpio_last = RT305X_GPIO_JTAG_TDI, }, { .name = "mdio", .mask = RT305X_GPIO_MODE_MDIO, .gpio_first = RT305X_GPIO_MDIO_MDC, .gpio_last = RT305X_GPIO_MDIO_MDIO, }, { .name = "sdram", .mask = RT305X_GPIO_MODE_SDRAM, .gpio_first = RT305X_GPIO_SDRAM_MD16, .gpio_last = RT305X_GPIO_SDRAM_MD31, }, { .name = "rgmii", .mask = RT305X_GPIO_MODE_RGMII, .gpio_first = RT305X_GPIO_GE0_TXD0, .gpio_last = RT305X_GPIO_GE0_RXCLK, }, {0} }; static struct ralink_pinmux_grp uart_mux[] = { { .name = "uartf", .mask = RT305X_GPIO_MODE_UARTF, .gpio_first = RT305X_GPIO_7, .gpio_last = RT305X_GPIO_14, }, { .name = "pcm uartf", .mask = RT305X_GPIO_MODE_PCM_UARTF, .gpio_first = RT305X_GPIO_7, .gpio_last = RT305X_GPIO_14, }, { .name = "pcm i2s", .mask = RT305X_GPIO_MODE_PCM_I2S, .gpio_first = RT305X_GPIO_7, .gpio_last = RT305X_GPIO_14, }, { .name = "i2s uartf", .mask = RT305X_GPIO_MODE_I2S_UARTF, .gpio_first = RT305X_GPIO_7, .gpio_last = RT305X_GPIO_14, }, { .name = "pcm gpio", .mask = RT305X_GPIO_MODE_PCM_GPIO, .gpio_first = RT305X_GPIO_10, .gpio_last = RT305X_GPIO_14, }, { .name = "gpio uartf", .mask = RT305X_GPIO_MODE_GPIO_UARTF, .gpio_first = RT305X_GPIO_7, .gpio_last = RT305X_GPIO_10, }, { .name = "gpio i2s", .mask = RT305X_GPIO_MODE_GPIO_I2S, .gpio_first = RT305X_GPIO_7, .gpio_last = RT305X_GPIO_10, }, { .name = "gpio", .mask = RT305X_GPIO_MODE_GPIO, }, {0} }; static void rt305x_wdt_reset(void) { u32 t; /* enable WDT reset output on pin SRAM_CS_N */ t = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG); t |= RT305X_SYSCFG_SRAM_CS0_MODE_WDT << RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT; rt_sysc_w32(t, SYSC_REG_SYSTEM_CONFIG); } struct ralink_pinmux rt_gpio_pinmux = { .mode = mode_mux, .uart = uart_mux, .uart_shift = RT305X_GPIO_MODE_UART0_SHIFT, .uart_mask = RT305X_GPIO_MODE_UART0_MASK, .wdt_reset = rt305x_wdt_reset, }; static unsigned long rt5350_get_mem_size(void) { void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT305X_SYSC_BASE); unsigned long ret; u32 t; t = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG); t = (t >> RT5350_SYSCFG0_DRAM_SIZE_SHIFT) & RT5350_SYSCFG0_DRAM_SIZE_MASK; switch (t) { case RT5350_SYSCFG0_DRAM_SIZE_2M: ret = 2; break; case RT5350_SYSCFG0_DRAM_SIZE_8M: ret = 8; break; case RT5350_SYSCFG0_DRAM_SIZE_16M: ret = 16; break; case RT5350_SYSCFG0_DRAM_SIZE_32M: ret = 32; break; case RT5350_SYSCFG0_DRAM_SIZE_64M: ret = 64; break; default: panic("rt5350: invalid DRAM size: %u", t); break; } return ret; } void __init ralink_clk_init(void) { unsigned long cpu_rate, sys_rate, wdt_rate, uart_rate; unsigned long wmac_rate = 40000000; u32 t = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG); if (soc_is_rt305x() || soc_is_rt3350()) { t = (t >> RT305X_SYSCFG_CPUCLK_SHIFT) & RT305X_SYSCFG_CPUCLK_MASK; switch (t) { case RT305X_SYSCFG_CPUCLK_LOW: cpu_rate = 320000000; break; case RT305X_SYSCFG_CPUCLK_HIGH: cpu_rate = 384000000; break; } sys_rate = uart_rate = wdt_rate = cpu_rate / 3; } else if (soc_is_rt3352()) { t = (t >> RT3352_SYSCFG0_CPUCLK_SHIFT) & RT3352_SYSCFG0_CPUCLK_MASK; switch (t) { case RT3352_SYSCFG0_CPUCLK_LOW: cpu_rate = 384000000; break; case RT3352_SYSCFG0_CPUCLK_HIGH: cpu_rate = 400000000; break; } sys_rate = wdt_rate = cpu_rate / 3; uart_rate = 40000000; } else if (soc_is_rt5350()) { t = (t >> RT5350_SYSCFG0_CPUCLK_SHIFT) & RT5350_SYSCFG0_CPUCLK_MASK; switch (t) { case RT5350_SYSCFG0_CPUCLK_360: cpu_rate = 360000000; sys_rate = cpu_rate / 3; break; case RT5350_SYSCFG0_CPUCLK_320: cpu_rate = 320000000; sys_rate = cpu_rate / 4; break; case RT5350_SYSCFG0_CPUCLK_300: cpu_rate = 300000000; sys_rate = cpu_rate / 3; break; default: BUG(); } uart_rate = 40000000; wdt_rate = sys_rate; } else { BUG(); } if (soc_is_rt3352() || soc_is_rt5350()) { u32 val = rt_sysc_r32(RT3352_SYSC_REG_SYSCFG0); if (!(val & RT3352_CLKCFG0_XTAL_SEL)) wmac_rate = 20000000; } ralink_clk_add("cpu", cpu_rate); ralink_clk_add("10000b00.spi", sys_rate); ralink_clk_add("10000100.timer", wdt_rate); ralink_clk_add("10000120.watchdog", wdt_rate); ralink_clk_add("10000500.uart", uart_rate); ralink_clk_add("10000c00.uartlite", uart_rate); ralink_clk_add("10100000.ethernet", sys_rate); ralink_clk_add("10180000.wmac", wmac_rate); } void __init ralink_of_remap(void) { rt_sysc_membase = plat_of_remap_node("ralink,rt3050-sysc"); rt_memc_membase = plat_of_remap_node("ralink,rt3050-memc"); if (!rt_sysc_membase || !rt_memc_membase) panic("Failed to remap core resources"); } void prom_soc_init(struct ralink_soc_info *soc_info) { void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT305X_SYSC_BASE); unsigned char *name; u32 n0; u32 n1; u32 id; n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0); n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1); if (n0 == RT3052_CHIP_NAME0 && n1 == RT3052_CHIP_NAME1) { unsigned long icache_sets; icache_sets = (read_c0_config1() >> 22) & 7; if (icache_sets == 1) { rt305x_soc = RT305X_SOC_RT3050; name = "RT3050"; soc_info->compatible = "ralink,rt3050-soc"; } else { rt305x_soc = RT305X_SOC_RT3052; name = "RT3052"; soc_info->compatible = "ralink,rt3052-soc"; } } else if (n0 == RT3350_CHIP_NAME0 && n1 == RT3350_CHIP_NAME1) { rt305x_soc = RT305X_SOC_RT3350; name = "RT3350"; soc_info->compatible = "ralink,rt3350-soc"; } else if (n0 == RT3352_CHIP_NAME0 && n1 == RT3352_CHIP_NAME1) { rt305x_soc = RT305X_SOC_RT3352; name = "RT3352"; soc_info->compatible = "ralink,rt3352-soc"; } else if (n0 == RT5350_CHIP_NAME0 && n1 == RT5350_CHIP_NAME1) { rt305x_soc = RT305X_SOC_RT5350; name = "RT5350"; soc_info->compatible = "ralink,rt5350-soc"; } else { panic("rt305x: unknown SoC, n0:%08x n1:%08x", n0, n1); } id = __raw_readl(sysc + SYSC_REG_CHIP_ID); snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN, "Ralink %s id:%u rev:%u", name, (id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK, (id & CHIP_ID_REV_MASK)); soc_info->mem_base = RT305X_SDRAM_BASE; if (soc_is_rt5350()) { soc_info->mem_size = rt5350_get_mem_size(); } else if (soc_is_rt305x() || soc_is_rt3350()) { soc_info->mem_size_min = RT305X_MEM_SIZE_MIN; soc_info->mem_size_max = RT305X_MEM_SIZE_MAX; } else if (soc_is_rt3352()) { soc_info->mem_size_min = RT3352_MEM_SIZE_MIN; soc_info->mem_size_max = RT3352_MEM_SIZE_MAX; } }