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MIPS: ralink: adds support for RT305x SoC family 

Add support code for rt3050, rt3052, rt3350, rt3352 and rt5350 SOC.

The code detects the SoC and registers the clk / pinmux settings.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4896/
This commit is contained in:
John Crispin 2013-01-20 22:03:46 +01:00
parent 5fff610b7c
commit 2809b31770
2 changed files with 381 additions and 0 deletions
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139
arch/mips/include/asm/mach-ralink/rt305x.h Normal file
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/*
* 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>
*/
#ifndef _RT305X_REGS_H_
#define _RT305X_REGS_H_
enum rt305x_soc_type {
RT305X_SOC_UNKNOWN = 0,
RT305X_SOC_RT3050,
RT305X_SOC_RT3052,
RT305X_SOC_RT3350,
RT305X_SOC_RT3352,
RT305X_SOC_RT5350,
};
extern enum rt305x_soc_type rt305x_soc;
static inline int soc_is_rt3050(void)
{
return rt305x_soc == RT305X_SOC_RT3050;
}
static inline int soc_is_rt3052(void)
{
return rt305x_soc == RT305X_SOC_RT3052;
}
static inline int soc_is_rt305x(void)
{
return soc_is_rt3050() || soc_is_rt3052();
}
static inline int soc_is_rt3350(void)
{
return rt305x_soc == RT305X_SOC_RT3350;
}
static inline int soc_is_rt3352(void)
{
return rt305x_soc == RT305X_SOC_RT3352;
}
static inline int soc_is_rt5350(void)
{
return rt305x_soc == RT305X_SOC_RT5350;
}
#define RT305X_SYSC_BASE 0x10000000
#define SYSC_REG_CHIP_NAME0 0x00
#define SYSC_REG_CHIP_NAME1 0x04
#define SYSC_REG_CHIP_ID 0x0c
#define SYSC_REG_SYSTEM_CONFIG 0x10
#define RT3052_CHIP_NAME0 0x30335452
#define RT3052_CHIP_NAME1 0x20203235
#define RT3350_CHIP_NAME0 0x33335452
#define RT3350_CHIP_NAME1 0x20203035
#define RT3352_CHIP_NAME0 0x33335452
#define RT3352_CHIP_NAME1 0x20203235
#define RT5350_CHIP_NAME0 0x33355452
#define RT5350_CHIP_NAME1 0x20203035
#define CHIP_ID_ID_MASK 0xff
#define CHIP_ID_ID_SHIFT 8
#define CHIP_ID_REV_MASK 0xff
#define RT305X_SYSCFG_CPUCLK_SHIFT 18
#define RT305X_SYSCFG_CPUCLK_MASK 0x1
#define RT305X_SYSCFG_CPUCLK_LOW 0x0
#define RT305X_SYSCFG_CPUCLK_HIGH 0x1
#define RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT 2
#define RT305X_SYSCFG_CPUCLK_MASK 0x1
#define RT305X_SYSCFG_SRAM_CS0_MODE_WDT 0x1
#define RT3352_SYSCFG0_CPUCLK_SHIFT 8
#define RT3352_SYSCFG0_CPUCLK_MASK 0x1
#define RT3352_SYSCFG0_CPUCLK_LOW 0x0
#define RT3352_SYSCFG0_CPUCLK_HIGH 0x1
#define RT5350_SYSCFG0_CPUCLK_SHIFT 8
#define RT5350_SYSCFG0_CPUCLK_MASK 0x3
#define RT5350_SYSCFG0_CPUCLK_360 0x0
#define RT5350_SYSCFG0_CPUCLK_320 0x2
#define RT5350_SYSCFG0_CPUCLK_300 0x3
/* multi function gpio pins */
#define RT305X_GPIO_I2C_SD 1
#define RT305X_GPIO_I2C_SCLK 2
#define RT305X_GPIO_SPI_EN 3
#define RT305X_GPIO_SPI_CLK 4
/* GPIO 7-14 is shared between UART0, PCM and I2S interfaces */
#define RT305X_GPIO_7 7
#define RT305X_GPIO_10 10
#define RT305X_GPIO_14 14
#define RT305X_GPIO_UART1_TXD 15
#define RT305X_GPIO_UART1_RXD 16
#define RT305X_GPIO_JTAG_TDO 17
#define RT305X_GPIO_JTAG_TDI 18
#define RT305X_GPIO_MDIO_MDC 22
#define RT305X_GPIO_MDIO_MDIO 23
#define RT305X_GPIO_SDRAM_MD16 24
#define RT305X_GPIO_SDRAM_MD31 39
#define RT305X_GPIO_GE0_TXD0 40
#define RT305X_GPIO_GE0_RXCLK 51
#define RT305X_GPIO_MODE_I2C BIT(0)
#define RT305X_GPIO_MODE_SPI BIT(1)
#define RT305X_GPIO_MODE_UART0_SHIFT 2
#define RT305X_GPIO_MODE_UART0_MASK 0x7
#define RT305X_GPIO_MODE_UART0(x) ((x) << RT305X_GPIO_MODE_UART0_SHIFT)
#define RT305X_GPIO_MODE_UARTF 0x0
#define RT305X_GPIO_MODE_PCM_UARTF 0x1
#define RT305X_GPIO_MODE_PCM_I2S 0x2
#define RT305X_GPIO_MODE_I2S_UARTF 0x3
#define RT305X_GPIO_MODE_PCM_GPIO 0x4
#define RT305X_GPIO_MODE_GPIO_UARTF 0x5
#define RT305X_GPIO_MODE_GPIO_I2S 0x6
#define RT305X_GPIO_MODE_GPIO 0x7
#define RT305X_GPIO_MODE_UART1 BIT(5)
#define RT305X_GPIO_MODE_JTAG BIT(6)
#define RT305X_GPIO_MODE_MDIO BIT(7)
#define RT305X_GPIO_MODE_SDRAM BIT(8)
#define RT305X_GPIO_MODE_RGMII BIT(9)
#endif

242
arch/mips/ralink/rt305x.c Normal file
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/*
* 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 "common.h"
enum rt305x_soc_type rt305x_soc;
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}
};
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_14,
}, {
.name = "gpio i2s",
.mask = RT305X_GPIO_MODE_GPIO_I2S,
.gpio_first = RT305X_GPIO_7,
.gpio_last = RT305X_GPIO_14,
}, {
.name = "gpio",
.mask = RT305X_GPIO_MODE_GPIO,
}, {0}
};
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 gpio_pinmux = {
.mode = mode_mux,
.uart = uart_mux,
.uart_shift = RT305X_GPIO_MODE_UART0_SHIFT,
.wdt_reset = rt305x_wdt_reset,
};
void __init ralink_clk_init(void)
{
unsigned long cpu_rate, sys_rate, wdt_rate, uart_rate;
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();
}
ralink_clk_add("cpu", cpu_rate);
ralink_clk_add("10000b00.spi", sys_rate);
ralink_clk_add("10000100.timer", wdt_rate);
ralink_clk_add("10000500.uart", uart_rate);
ralink_clk_add("10000c00.uartlite", uart_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\n", 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));
}