diff options
Diffstat (limited to 'kernel/arch/mips/ralink/rt305x.c')
| -rw-r--r-- | kernel/arch/mips/ralink/rt305x.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/kernel/arch/mips/ralink/rt305x.c b/kernel/arch/mips/ralink/rt305x.c new file mode 100644 index 000000000..c40776ab6 --- /dev/null +++ b/kernel/arch/mips/ralink/rt305x.c @@ -0,0 +1,283 @@ +/* + * 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 <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2013 John Crispin <blogic@openwrt.org> + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> + +#include <asm/mipsregs.h> +#include <asm/mach-ralink/ralink_regs.h> +#include <asm/mach-ralink/rt305x.h> +#include <asm/mach-ralink/pinmux.h> + +#include "common.h" + +enum rt305x_soc_type rt305x_soc; + +static struct rt2880_pmx_func i2c_func[] = { FUNC("i2c", 0, 1, 2) }; +static struct rt2880_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) }; +static struct rt2880_pmx_func uartf_func[] = { + FUNC("uartf", RT305X_GPIO_MODE_UARTF, 7, 8), + FUNC("pcm uartf", RT305X_GPIO_MODE_PCM_UARTF, 7, 8), + FUNC("pcm i2s", RT305X_GPIO_MODE_PCM_I2S, 7, 8), + FUNC("i2s uartf", RT305X_GPIO_MODE_I2S_UARTF, 7, 8), + FUNC("pcm gpio", RT305X_GPIO_MODE_PCM_GPIO, 11, 4), + FUNC("gpio uartf", RT305X_GPIO_MODE_GPIO_UARTF, 7, 4), + FUNC("gpio i2s", RT305X_GPIO_MODE_GPIO_I2S, 7, 4), +}; +static struct rt2880_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 15, 2) }; +static struct rt2880_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) }; +static struct rt2880_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) }; +static struct rt2880_pmx_func rt5350_led_func[] = { FUNC("led", 0, 22, 5) }; +static struct rt2880_pmx_func rt5350_cs1_func[] = { + FUNC("spi_cs1", 0, 27, 1), + FUNC("wdg_cs1", 1, 27, 1), +}; +static struct rt2880_pmx_func sdram_func[] = { FUNC("sdram", 0, 24, 16) }; +static struct rt2880_pmx_func rt3352_rgmii_func[] = { + FUNC("rgmii", 0, 24, 12) +}; +static struct rt2880_pmx_func rgmii_func[] = { FUNC("rgmii", 0, 40, 12) }; +static struct rt2880_pmx_func rt3352_lna_func[] = { FUNC("lna", 0, 36, 2) }; +static struct rt2880_pmx_func rt3352_pa_func[] = { FUNC("pa", 0, 38, 2) }; +static struct rt2880_pmx_func rt3352_led_func[] = { FUNC("led", 0, 40, 5) }; + +static struct rt2880_pmx_group rt3050_pinmux_data[] = { + GRP("i2c", i2c_func, 1, RT305X_GPIO_MODE_I2C), + GRP("spi", spi_func, 1, RT305X_GPIO_MODE_SPI), + GRP("uartf", uartf_func, RT305X_GPIO_MODE_UART0_MASK, + RT305X_GPIO_MODE_UART0_SHIFT), + GRP("uartlite", uartlite_func, 1, RT305X_GPIO_MODE_UART1), + GRP("jtag", jtag_func, 1, RT305X_GPIO_MODE_JTAG), + GRP("mdio", mdio_func, 1, RT305X_GPIO_MODE_MDIO), + GRP("rgmii", rgmii_func, 1, RT305X_GPIO_MODE_RGMII), + GRP("sdram", sdram_func, 1, RT305X_GPIO_MODE_SDRAM), + { 0 } +}; + +static struct rt2880_pmx_group rt3352_pinmux_data[] = { + GRP("i2c", i2c_func, 1, RT305X_GPIO_MODE_I2C), + GRP("spi", spi_func, 1, RT305X_GPIO_MODE_SPI), + GRP("uartf", uartf_func, RT305X_GPIO_MODE_UART0_MASK, + RT305X_GPIO_MODE_UART0_SHIFT), + GRP("uartlite", uartlite_func, 1, RT305X_GPIO_MODE_UART1), + GRP("jtag", jtag_func, 1, RT305X_GPIO_MODE_JTAG), + GRP("mdio", mdio_func, 1, RT305X_GPIO_MODE_MDIO), + GRP("rgmii", rt3352_rgmii_func, 1, RT305X_GPIO_MODE_RGMII), + GRP("lna", rt3352_lna_func, 1, RT3352_GPIO_MODE_LNA), + GRP("pa", rt3352_pa_func, 1, RT3352_GPIO_MODE_PA), + GRP("led", rt3352_led_func, 1, RT5350_GPIO_MODE_PHY_LED), + { 0 } +}; + +static struct rt2880_pmx_group rt5350_pinmux_data[] = { + GRP("i2c", i2c_func, 1, RT305X_GPIO_MODE_I2C), + GRP("spi", spi_func, 1, RT305X_GPIO_MODE_SPI), + GRP("uartf", uartf_func, RT305X_GPIO_MODE_UART0_MASK, + RT305X_GPIO_MODE_UART0_SHIFT), + GRP("uartlite", uartlite_func, 1, RT305X_GPIO_MODE_UART1), + GRP("jtag", jtag_func, 1, RT305X_GPIO_MODE_JTAG), + GRP("led", rt5350_led_func, 1, RT5350_GPIO_MODE_PHY_LED), + GRP("spi_cs1", rt5350_cs1_func, 2, RT5350_GPIO_MODE_SPI_CS1), + { 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); +} + +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(); + rt2880_pinmux_data = rt5350_pinmux_data; + } 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; + rt2880_pinmux_data = rt3050_pinmux_data; + } else if (soc_is_rt3352()) { + soc_info->mem_size_min = RT3352_MEM_SIZE_MIN; + soc_info->mem_size_max = RT3352_MEM_SIZE_MAX; + rt2880_pinmux_data = rt3352_pinmux_data; + } +} |