Commit 293840b9 authored by John Crispin's avatar John Crispin Committed by Ralf Baechle
Browse files

MIPS: ralink: adds support for RT3883 SoC family 



Add support code for rt3883 SOC.

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

Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
Signed-off-by: default avatarGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5185/
parent 80fb55a9

arch/mips/include/asm/mach-ralink/rt3883.h

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/*

 * Ralink RT3662/RT3883 SoC register definitions

 *

 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>

 *

 * 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.

 */



#ifndef _RT3883_REGS_H_

#define _RT3883_REGS_H_



#include <linux/bitops.h>



#define RT3883_SDRAM_BASE	0x00000000

#define RT3883_SYSC_BASE	0x10000000

#define RT3883_TIMER_BASE	0x10000100

#define RT3883_INTC_BASE	0x10000200

#define RT3883_MEMC_BASE	0x10000300

#define RT3883_UART0_BASE	0x10000500

#define RT3883_PIO_BASE		0x10000600

#define RT3883_FSCC_BASE	0x10000700

#define RT3883_NANDC_BASE	0x10000810

#define RT3883_I2C_BASE		0x10000900

#define RT3883_I2S_BASE		0x10000a00

#define RT3883_SPI_BASE		0x10000b00

#define RT3883_UART1_BASE	0x10000c00

#define RT3883_PCM_BASE		0x10002000

#define RT3883_GDMA_BASE	0x10002800

#define RT3883_CODEC1_BASE	0x10003000

#define RT3883_CODEC2_BASE	0x10003800

#define RT3883_FE_BASE		0x10100000

#define RT3883_ROM_BASE		0x10118000

#define RT3883_USBDEV_BASE	0x10112000

#define RT3883_PCI_BASE		0x10140000

#define RT3883_WLAN_BASE	0x10180000

#define RT3883_USBHOST_BASE	0x101c0000

#define RT3883_BOOT_BASE	0x1c000000

#define RT3883_SRAM_BASE	0x1e000000

#define RT3883_PCIMEM_BASE	0x20000000



#define RT3883_EHCI_BASE	(RT3883_USBHOST_BASE)

#define RT3883_OHCI_BASE	(RT3883_USBHOST_BASE + 0x1000)



#define RT3883_SYSC_SIZE	0x100

#define RT3883_TIMER_SIZE	0x100

#define RT3883_INTC_SIZE	0x100

#define RT3883_MEMC_SIZE	0x100

#define RT3883_UART0_SIZE	0x100

#define RT3883_UART1_SIZE	0x100

#define RT3883_PIO_SIZE		0x100

#define RT3883_FSCC_SIZE	0x100

#define RT3883_NANDC_SIZE	0x0f0

#define RT3883_I2C_SIZE		0x100

#define RT3883_I2S_SIZE		0x100

#define RT3883_SPI_SIZE		0x100

#define RT3883_PCM_SIZE		0x800

#define RT3883_GDMA_SIZE	0x800

#define RT3883_CODEC1_SIZE	0x800

#define RT3883_CODEC2_SIZE	0x800

#define RT3883_FE_SIZE		0x10000

#define RT3883_ROM_SIZE		0x4000

#define RT3883_USBDEV_SIZE	0x4000

#define RT3883_PCI_SIZE		0x40000

#define RT3883_WLAN_SIZE	0x40000

#define RT3883_USBHOST_SIZE	0x40000

#define RT3883_BOOT_SIZE	(32 * 1024 * 1024)

#define RT3883_SRAM_SIZE	(32 * 1024 * 1024)



/* SYSC registers */

#define RT3883_SYSC_REG_CHIPID0_3	0x00	/* Chip ID 0 */

#define RT3883_SYSC_REG_CHIPID4_7	0x04	/* Chip ID 1 */

#define RT3883_SYSC_REG_REVID		0x0c	/* Chip Revision Identification */

#define RT3883_SYSC_REG_SYSCFG0		0x10	/* System Configuration 0 */

#define RT3883_SYSC_REG_SYSCFG1		0x14	/* System Configuration 1 */

#define RT3883_SYSC_REG_CLKCFG0		0x2c	/* Clock Configuration 0 */

#define RT3883_SYSC_REG_CLKCFG1		0x30	/* Clock Configuration 1 */

#define RT3883_SYSC_REG_RSTCTRL		0x34	/* Reset Control*/

#define RT3883_SYSC_REG_RSTSTAT		0x38	/* Reset Status*/

#define RT3883_SYSC_REG_USB_PS		0x5c	/* USB Power saving control */

#define RT3883_SYSC_REG_GPIO_MODE	0x60	/* GPIO Purpose Select */

#define RT3883_SYSC_REG_PCIE_CLK_GEN0	0x7c

#define RT3883_SYSC_REG_PCIE_CLK_GEN1	0x80

#define RT3883_SYSC_REG_PCIE_CLK_GEN2	0x84

#define RT3883_SYSC_REG_PMU		0x88

#define RT3883_SYSC_REG_PMU1		0x8c



#define RT3883_CHIP_NAME0		0x38335452

#define RT3883_CHIP_NAME1		0x20203338



#define RT3883_REVID_VER_ID_MASK	0x0f

#define RT3883_REVID_VER_ID_SHIFT	8

#define RT3883_REVID_ECO_ID_MASK	0x0f



#define RT3883_SYSCFG0_DRAM_TYPE_DDR2	BIT(17)

#define RT3883_SYSCFG0_CPUCLK_SHIFT	8

#define RT3883_SYSCFG0_CPUCLK_MASK	0x3

#define RT3883_SYSCFG0_CPUCLK_250	0x0

#define RT3883_SYSCFG0_CPUCLK_384	0x1

#define RT3883_SYSCFG0_CPUCLK_480	0x2

#define RT3883_SYSCFG0_CPUCLK_500	0x3



#define RT3883_SYSCFG1_USB0_HOST_MODE	BIT(10)

#define RT3883_SYSCFG1_PCIE_RC_MODE	BIT(8)

#define RT3883_SYSCFG1_PCI_HOST_MODE	BIT(7)

#define RT3883_SYSCFG1_PCI_66M_MODE	BIT(6)

#define RT3883_SYSCFG1_GPIO2_AS_WDT_OUT	BIT(2)



#define RT3883_CLKCFG1_PCIE_CLK_EN	BIT(21)

#define RT3883_CLKCFG1_UPHY1_CLK_EN	BIT(20)

#define RT3883_CLKCFG1_PCI_CLK_EN	BIT(19)

#define RT3883_CLKCFG1_UPHY0_CLK_EN	BIT(18)



#define RT3883_GPIO_MODE_I2C		BIT(0)

#define RT3883_GPIO_MODE_SPI		BIT(1)

#define RT3883_GPIO_MODE_UART0_SHIFT	2

#define RT3883_GPIO_MODE_UART0_MASK	0x7

#define RT3883_GPIO_MODE_UART0(x)	((x) << RT3883_GPIO_MODE_UART0_SHIFT)

#define RT3883_GPIO_MODE_UARTF		0x0

#define RT3883_GPIO_MODE_PCM_UARTF	0x1

#define RT3883_GPIO_MODE_PCM_I2S	0x2

#define RT3883_GPIO_MODE_I2S_UARTF	0x3

#define RT3883_GPIO_MODE_PCM_GPIO	0x4

#define RT3883_GPIO_MODE_GPIO_UARTF	0x5

#define RT3883_GPIO_MODE_GPIO_I2S	0x6

#define RT3883_GPIO_MODE_GPIO		0x7

#define RT3883_GPIO_MODE_UART1		BIT(5)

#define RT3883_GPIO_MODE_JTAG		BIT(6)

#define RT3883_GPIO_MODE_MDIO		BIT(7)

#define RT3883_GPIO_MODE_GE1		BIT(9)

#define RT3883_GPIO_MODE_GE2		BIT(10)

#define RT3883_GPIO_MODE_PCI_SHIFT	11

#define RT3883_GPIO_MODE_PCI_MASK	0x7

#define RT3883_GPIO_MODE_PCI		(RT3883_GPIO_MODE_PCI_MASK << RT3883_GPIO_MODE_PCI_SHIFT)

#define RT3883_GPIO_MODE_LNA_A_SHIFT	16

#define RT3883_GPIO_MODE_LNA_A_MASK	0x3

#define _RT3883_GPIO_MODE_LNA_A(_x)	((_x) << RT3883_GPIO_MODE_LNA_A_SHIFT)

#define RT3883_GPIO_MODE_LNA_A_GPIO	0x3

#define RT3883_GPIO_MODE_LNA_A		_RT3883_GPIO_MODE_LNA_A(RT3883_GPIO_MODE_LNA_A_MASK)

#define RT3883_GPIO_MODE_LNA_G_SHIFT	18

#define RT3883_GPIO_MODE_LNA_G_MASK	0x3

#define _RT3883_GPIO_MODE_LNA_G(_x)	((_x) << RT3883_GPIO_MODE_LNA_G_SHIFT)

#define RT3883_GPIO_MODE_LNA_G_GPIO	0x3

#define RT3883_GPIO_MODE_LNA_G		_RT3883_GPIO_MODE_LNA_G(RT3883_GPIO_MODE_LNA_G_MASK)



#define RT3883_GPIO_I2C_SD		1

#define RT3883_GPIO_I2C_SCLK		2

#define RT3883_GPIO_SPI_CS0		3

#define RT3883_GPIO_SPI_CLK		4

#define RT3883_GPIO_SPI_MOSI		5

#define RT3883_GPIO_SPI_MISO		6

#define RT3883_GPIO_7			7

#define RT3883_GPIO_10			10

#define RT3883_GPIO_11			11

#define RT3883_GPIO_14			14

#define RT3883_GPIO_UART1_TXD		15

#define RT3883_GPIO_UART1_RXD		16

#define RT3883_GPIO_JTAG_TDO		17

#define RT3883_GPIO_JTAG_TDI		18

#define RT3883_GPIO_JTAG_TMS		19

#define RT3883_GPIO_JTAG_TCLK		20

#define RT3883_GPIO_JTAG_TRST_N		21

#define RT3883_GPIO_MDIO_MDC		22

#define RT3883_GPIO_MDIO_MDIO		23

#define RT3883_GPIO_LNA_PE_A0		32

#define RT3883_GPIO_LNA_PE_A1		33

#define RT3883_GPIO_LNA_PE_A2		34

#define RT3883_GPIO_LNA_PE_G0		35

#define RT3883_GPIO_LNA_PE_G1		36

#define RT3883_GPIO_LNA_PE_G2		37

#define RT3883_GPIO_PCI_AD0		40

#define RT3883_GPIO_PCI_AD31		71

#define RT3883_GPIO_GE2_TXD0		72

#define RT3883_GPIO_GE2_TXD1		73

#define RT3883_GPIO_GE2_TXD2		74

#define RT3883_GPIO_GE2_TXD3		75

#define RT3883_GPIO_GE2_TXEN		76

#define RT3883_GPIO_GE2_TXCLK		77

#define RT3883_GPIO_GE2_RXD0		78

#define RT3883_GPIO_GE2_RXD1		79

#define RT3883_GPIO_GE2_RXD2		80

#define RT3883_GPIO_GE2_RXD3		81

#define RT3883_GPIO_GE2_RXDV		82

#define RT3883_GPIO_GE2_RXCLK		83

#define RT3883_GPIO_GE1_TXD0		84

#define RT3883_GPIO_GE1_TXD1		85

#define RT3883_GPIO_GE1_TXD2		86

#define RT3883_GPIO_GE1_TXD3		87

#define RT3883_GPIO_GE1_TXEN		88

#define RT3883_GPIO_GE1_TXCLK		89

#define RT3883_GPIO_GE1_RXD0		90

#define RT3883_GPIO_GE1_RXD1		91

#define RT3883_GPIO_GE1_RXD2		92

#define RT3883_GPIO_GE1_RXD3		93

#define RT3883_GPIO_GE1_RXDV		94

#define RT3883_GPIO_GE1_RXCLK	95



#define RT3883_RSTCTRL_PCIE_PCI_PDM	BIT(27)

#define RT3883_RSTCTRL_FLASH		BIT(26)

#define RT3883_RSTCTRL_UDEV		BIT(25)

#define RT3883_RSTCTRL_PCI		BIT(24)

#define RT3883_RSTCTRL_PCIE		BIT(23)

#define RT3883_RSTCTRL_UHST		BIT(22)

#define RT3883_RSTCTRL_FE		BIT(21)

#define RT3883_RSTCTRL_WLAN		BIT(20)

#define RT3883_RSTCTRL_UART1		BIT(29)

#define RT3883_RSTCTRL_SPI		BIT(18)

#define RT3883_RSTCTRL_I2S		BIT(17)

#define RT3883_RSTCTRL_I2C		BIT(16)

#define RT3883_RSTCTRL_NAND		BIT(15)

#define RT3883_RSTCTRL_DMA		BIT(14)

#define RT3883_RSTCTRL_PIO		BIT(13)

#define RT3883_RSTCTRL_UART		BIT(12)

#define RT3883_RSTCTRL_PCM		BIT(11)

#define RT3883_RSTCTRL_MC		BIT(10)

#define RT3883_RSTCTRL_INTC		BIT(9)

#define RT3883_RSTCTRL_TIMER		BIT(8)

#define RT3883_RSTCTRL_SYS		BIT(0)



#define RT3883_INTC_INT_SYSCTL	BIT(0)

#define RT3883_INTC_INT_TIMER0	BIT(1)

#define RT3883_INTC_INT_TIMER1	BIT(2)

#define RT3883_INTC_INT_IA	BIT(3)

#define RT3883_INTC_INT_PCM	BIT(4)

#define RT3883_INTC_INT_UART0	BIT(5)

#define RT3883_INTC_INT_PIO	BIT(6)

#define RT3883_INTC_INT_DMA	BIT(7)

#define RT3883_INTC_INT_NAND	BIT(8)

#define RT3883_INTC_INT_PERFC	BIT(9)

#define RT3883_INTC_INT_I2S	BIT(10)

#define RT3883_INTC_INT_UART1	BIT(12)

#define RT3883_INTC_INT_UHST	BIT(18)

#define RT3883_INTC_INT_UDEV	BIT(19)



/* FLASH/SRAM/Codec Controller registers */

#define RT3883_FSCC_REG_FLASH_CFG0	0x00

#define RT3883_FSCC_REG_FLASH_CFG1	0x04

#define RT3883_FSCC_REG_CODEC_CFG0	0x40

#define RT3883_FSCC_REG_CODEC_CFG1	0x44



#define RT3883_FLASH_CFG_WIDTH_SHIFT	26

#define RT3883_FLASH_CFG_WIDTH_MASK	0x3

#define RT3883_FLASH_CFG_WIDTH_8BIT	0x0

#define RT3883_FLASH_CFG_WIDTH_16BIT	0x1

#define RT3883_FLASH_CFG_WIDTH_32BIT	0x2



#endif /* _RT3883_REGS_H_ */

arch/mips/ralink/Kconfig

+5 −0
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@@ -15,6 +15,11 @@ choice 
		select USB_ARCH_HAS_OHCI

		select USB_ARCH_HAS_EHCI



	config SOC_RT3883

		bool "RT3883"

		select USB_ARCH_HAS_OHCI

		select USB_ARCH_HAS_EHCI



endchoice



choice

arch/mips/ralink/Makefile

+1 −0
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@@ -10,6 +10,7 @@ obj-y := prom.o of.o reset.o clk.o irq.o 


obj-$(CONFIG_SOC_RT288X) += rt288x.o

obj-$(CONFIG_SOC_RT305X) += rt305x.o

obj-$(CONFIG_SOC_RT3883) += rt3883.o



obj-$(CONFIG_EARLY_PRINTK) += early_printk.o

arch/mips/ralink/Platform

+5 −0
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@@ -13,3 +13,8 @@ load-$(CONFIG_SOC_RT288X) += 0xffffffff88000000 
# Ralink RT305x

#

load-$(CONFIG_SOC_RT305X)	+= 0xffffffff80000000



#

# Ralink RT3883

#

load-$(CONFIG_SOC_RT3883)	+= 0xffffffff80000000

arch/mips/ralink/rt3883.c

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+242 −0
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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 Imre Kaloz <kaloz@openwrt.org>

 * Copyright (C) 2008-2011 Gabor Juhos <juhosg@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/rt3883.h>



#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);

}



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));

}