/* * 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 Imre Kaloz * Copyright (C) 2008-2011 Gabor Juhos * Copyright (C) 2013 John Crispin */ #include #include #include #include #include #include #include "common.h" static struct ralink_pinmux_grp mode_mux[] = { { .name = "i2c", .mask = RT3883_GPIO_MODE_I2C, .gpio_first = RT3883_GPIO_I2C_SD, .gpio_last = RT3883_GPIO_I2C_SCLK, }, { .name = "spi", .mask = RT3883_GPIO_MODE_SPI, .gpio_first = RT3883_GPIO_SPI_CS0, .gpio_last = RT3883_GPIO_SPI_MISO, }, { .name = "uartlite", .mask = RT3883_GPIO_MODE_UART1, .gpio_first = RT3883_GPIO_UART1_TXD, .gpio_last = RT3883_GPIO_UART1_RXD, }, { .name = "jtag", .mask = RT3883_GPIO_MODE_JTAG, .gpio_first = RT3883_GPIO_JTAG_TDO, .gpio_last = RT3883_GPIO_JTAG_TCLK, }, { .name = "mdio", .mask = RT3883_GPIO_MODE_MDIO, .gpio_first = RT3883_GPIO_MDIO_MDC, .gpio_last = RT3883_GPIO_MDIO_MDIO, }, { .name = "ge1", .mask = RT3883_GPIO_MODE_GE1, .gpio_first = RT3883_GPIO_GE1_TXD0, .gpio_last = RT3883_GPIO_GE1_RXCLK, }, { .name = "ge2", .mask = RT3883_GPIO_MODE_GE2, .gpio_first = RT3883_GPIO_GE2_TXD0, .gpio_last = RT3883_GPIO_GE2_RXCLK, }, { .name = "pci", .mask = RT3883_GPIO_MODE_PCI, .gpio_first = RT3883_GPIO_PCI_AD0, .gpio_last = RT3883_GPIO_PCI_AD31, }, { .name = "lna a", .mask = RT3883_GPIO_MODE_LNA_A, .gpio_first = RT3883_GPIO_LNA_PE_A0, .gpio_last = RT3883_GPIO_LNA_PE_A2, }, { .name = "lna g", .mask = RT3883_GPIO_MODE_LNA_G, .gpio_first = RT3883_GPIO_LNA_PE_G0, .gpio_last = RT3883_GPIO_LNA_PE_G2, }, {0} }; static struct ralink_pinmux_grp uart_mux[] = { { .name = "uartf", .mask = RT3883_GPIO_MODE_UARTF, .gpio_first = RT3883_GPIO_7, .gpio_last = RT3883_GPIO_14, }, { .name = "pcm uartf", .mask = RT3883_GPIO_MODE_PCM_UARTF, .gpio_first = RT3883_GPIO_7, .gpio_last = RT3883_GPIO_14, }, { .name = "pcm i2s", .mask = RT3883_GPIO_MODE_PCM_I2S, .gpio_first = RT3883_GPIO_7, .gpio_last = RT3883_GPIO_14, }, { .name = "i2s uartf", .mask = RT3883_GPIO_MODE_I2S_UARTF, .gpio_first = RT3883_GPIO_7, .gpio_last = RT3883_GPIO_14, }, { .name = "pcm gpio", .mask = RT3883_GPIO_MODE_PCM_GPIO, .gpio_first = RT3883_GPIO_11, .gpio_last = RT3883_GPIO_14, }, { .name = "gpio uartf", .mask = RT3883_GPIO_MODE_GPIO_UARTF, .gpio_first = RT3883_GPIO_7, .gpio_last = RT3883_GPIO_10, }, { .name = "gpio i2s", .mask = RT3883_GPIO_MODE_GPIO_I2S, .gpio_first = RT3883_GPIO_7, .gpio_last = RT3883_GPIO_10, }, { .name = "gpio", .mask = RT3883_GPIO_MODE_GPIO, }, {0} }; static struct ralink_pinmux_grp pci_mux[] = { { .name = "pci-dev", .mask = 0, .gpio_first = RT3883_GPIO_PCI_AD0, .gpio_last = RT3883_GPIO_PCI_AD31, }, { .name = "pci-host2", .mask = 1, .gpio_first = RT3883_GPIO_PCI_AD0, .gpio_last = RT3883_GPIO_PCI_AD31, }, { .name = "pci-host1", .mask = 2, .gpio_first = RT3883_GPIO_PCI_AD0, .gpio_last = RT3883_GPIO_PCI_AD31, }, { .name = "pci-fnc", .mask = 3, .gpio_first = RT3883_GPIO_PCI_AD0, .gpio_last = RT3883_GPIO_PCI_AD31, }, { .name = "pci-gpio", .mask = 7, .gpio_first = RT3883_GPIO_PCI_AD0, .gpio_last = RT3883_GPIO_PCI_AD31, }, {0} }; static void rt3883_wdt_reset(void) { u32 t; /* enable WDT reset output on GPIO 2 */ t = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG1); t |= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT; rt_sysc_w32(t, RT3883_SYSC_REG_SYSCFG1); } struct ralink_pinmux rt_gpio_pinmux = { .mode = mode_mux, .uart = uart_mux, .uart_shift = RT3883_GPIO_MODE_UART0_SHIFT, .uart_mask = RT3883_GPIO_MODE_UART0_MASK, .wdt_reset = rt3883_wdt_reset, .pci = pci_mux, .pci_shift = RT3883_GPIO_MODE_PCI_SHIFT, .pci_mask = RT3883_GPIO_MODE_PCI_MASK, }; void __init ralink_clk_init(void) { unsigned long cpu_rate, sys_rate; u32 syscfg0; u32 clksel; u32 ddr2; syscfg0 = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG0); clksel = ((syscfg0 >> RT3883_SYSCFG0_CPUCLK_SHIFT) & RT3883_SYSCFG0_CPUCLK_MASK); ddr2 = syscfg0 & RT3883_SYSCFG0_DRAM_TYPE_DDR2; switch (clksel) { case RT3883_SYSCFG0_CPUCLK_250: cpu_rate = 250000000; sys_rate = (ddr2) ? 125000000 : 83000000; break; case RT3883_SYSCFG0_CPUCLK_384: cpu_rate = 384000000; sys_rate = (ddr2) ? 128000000 : 96000000; break; case RT3883_SYSCFG0_CPUCLK_480: cpu_rate = 480000000; sys_rate = (ddr2) ? 160000000 : 120000000; break; case RT3883_SYSCFG0_CPUCLK_500: cpu_rate = 500000000; sys_rate = (ddr2) ? 166000000 : 125000000; break; } ralink_clk_add("cpu", cpu_rate); ralink_clk_add("10000100.timer", sys_rate); ralink_clk_add("10000120.watchdog", sys_rate); ralink_clk_add("10000500.uart", 40000000); ralink_clk_add("10000b00.spi", sys_rate); ralink_clk_add("10000c00.uartlite", 40000000); ralink_clk_add("10100000.ethernet", sys_rate); ralink_clk_add("10180000.wmac", 40000000); } void __init ralink_of_remap(void) { rt_sysc_membase = plat_of_remap_node("ralink,rt3883-sysc"); rt_memc_membase = plat_of_remap_node("ralink,rt3883-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(RT3883_SYSC_BASE); const char *name; u32 n0; u32 n1; u32 id; n0 = __raw_readl(sysc + RT3883_SYSC_REG_CHIPID0_3); n1 = __raw_readl(sysc + RT3883_SYSC_REG_CHIPID4_7); id = __raw_readl(sysc + RT3883_SYSC_REG_REVID); if (n0 == RT3883_CHIP_NAME0 && n1 == RT3883_CHIP_NAME1) { soc_info->compatible = "ralink,rt3883-soc"; name = "RT3883"; } else { panic("rt3883: unknown SoC, n0:%08x n1:%08x", n0, n1); } snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN, "Ralink %s ver:%u eco:%u", name, (id >> RT3883_REVID_VER_ID_SHIFT) & RT3883_REVID_VER_ID_MASK, (id & RT3883_REVID_ECO_ID_MASK)); soc_info->mem_base = RT3883_SDRAM_BASE; soc_info->mem_size_min = RT3883_MEM_SIZE_MIN; soc_info->mem_size_max = RT3883_MEM_SIZE_MAX; }