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openwrtv4/target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
Gabor Juhos 1374e5a721 ar71xx: rb91x: fix ethernet packet loss issues 
The RB91x boards are suffering from ethernet packet loss after a cold
boot. The cause of the problem is that the AR8035 PHYs requires special
register settings to work reliably on these boards.

Enable the RGMII TX, RX delays and disable SmartEE functionality of
the AR8035 PHYs. Also enable the RXD delay in the ETH_CFG register
to fix the issue.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 40509
2014-04-13 20:41:52 +00:00

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/*
* MikroTik RouterBOARD 91X support
*
* Copyright (C) 2013 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.
*/
#define pr_fmt(fmt) "rb91x: " fmt
#include <linux/phy.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/ath9k_platform.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/spi/74x164.h>
#include <linux/spi/flash.h>
#include <linux/routerboot.h>
#include <linux/gpio.h>
#include <linux/platform_data/gpio-latch.h>
#include <linux/platform_data/rb91x_nand.h>
#include <linux/platform_data/phy-at803x.h>
#include <asm/prom.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ath79_spi_platform.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-eth.h"
#include "dev-leds-gpio.h"
#include "dev-nfc.h"
#include "dev-usb.h"
#include "dev-spi.h"
#include "dev-wmac.h"
#include "machtypes.h"
#include "pci.h"
#include "routerboot.h"
#define RB_ROUTERBOOT_OFFSET 0x0000
#define RB_ROUTERBOOT_MIN_SIZE 0xb000
#define RB_HARD_CFG_SIZE 0x1000
#define RB_BIOS_OFFSET 0xd000
#define RB_BIOS_SIZE 0x1000
#define RB_SOFT_CFG_OFFSET 0xf000
#define RB_SOFT_CFG_SIZE 0x1000
#define RB91X_FLAG_USB BIT(0)
#define RB91X_FLAG_PCIE BIT(1)
#define RB91X_LATCH_GPIO_BASE AR934X_GPIO_COUNT
#define RB91X_LATCH_GPIO(_x) (RB91X_LATCH_GPIO_BASE + (_x))
#define RB91X_SSR_GPIO_BASE (RB91X_LATCH_GPIO_BASE + AR934X_GPIO_COUNT)
#define RB91X_SSR_GPIO(_x) (RB91X_SSR_GPIO_BASE + (_x))
#define RB91X_SSR_BIT_LED1 0
#define RB91X_SSR_BIT_LED2 1
#define RB91X_SSR_BIT_LED3 2
#define RB91X_SSR_BIT_LED4 3
#define RB91X_SSR_BIT_LED5 4
#define RB91X_SSR_BIT_5 5
#define RB91X_SSR_BIT_USB_POWER 6
#define RB91X_SSR_BIT_PCIE_POWER 7
#define RB91X_GPIO_SSR_STROBE RB91X_LATCH_GPIO(0)
#define RB91X_GPIO_LED_POWER RB91X_LATCH_GPIO(1)
#define RB91X_GPIO_LED_USER RB91X_LATCH_GPIO(2)
#define RB91X_GPIO_NAND_READ RB91X_LATCH_GPIO(3)
#define RB91X_GPIO_NAND_RDY RB91X_LATCH_GPIO(4)
#define RB91X_GPIO_NLE RB91X_LATCH_GPIO(11)
#define RB91X_GPIO_NAND_NRW RB91X_LATCH_GPIO(12)
#define RB91X_GPIO_NAND_NCE RB91X_LATCH_GPIO(13)
#define RB91X_GPIO_NAND_CLE RB91X_LATCH_GPIO(14)
#define RB91X_GPIO_NAND_ALE RB91X_LATCH_GPIO(15)
#define RB91X_GPIO_LED_1 RB91X_SSR_GPIO(RB91X_SSR_BIT_LED1)
#define RB91X_GPIO_LED_2 RB91X_SSR_GPIO(RB91X_SSR_BIT_LED2)
#define RB91X_GPIO_LED_3 RB91X_SSR_GPIO(RB91X_SSR_BIT_LED3)
#define RB91X_GPIO_LED_4 RB91X_SSR_GPIO(RB91X_SSR_BIT_LED4)
#define RB91X_GPIO_LED_5 RB91X_SSR_GPIO(RB91X_SSR_BIT_LED5)
#define RB91X_GPIO_USB_POWER RB91X_SSR_GPIO(RB91X_SSR_BIT_USB_POWER)
#define RB91X_GPIO_PCIE_POWER RB91X_SSR_GPIO(RB91X_SSR_BIT_PCIE_POWER)
struct rb_board_info {
const char *name;
u32 flags;
};
static struct mtd_partition rb711gr100_spi_partitions[] = {
{
.name = "routerboot",
.offset = RB_ROUTERBOOT_OFFSET,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "hard_config",
.size = RB_HARD_CFG_SIZE,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "bios",
.offset = RB_BIOS_OFFSET,
.size = RB_BIOS_SIZE,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "soft_config",
.size = RB_SOFT_CFG_SIZE,
}
};
static struct flash_platform_data rb711gr100_spi_flash_data = {
.parts = rb711gr100_spi_partitions,
.nr_parts = ARRAY_SIZE(rb711gr100_spi_partitions),
};
static int rb711gr100_gpio_latch_gpios[AR934X_GPIO_COUNT] __initdata = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22
};
static struct gpio_latch_platform_data rb711gr100_gpio_latch_data __initdata = {
.base = RB91X_LATCH_GPIO_BASE,
.num_gpios = ARRAY_SIZE(rb711gr100_gpio_latch_gpios),
.gpios = rb711gr100_gpio_latch_gpios,
.le_gpio_index = 11,
.le_active_low = true,
};
static struct rb91x_nand_platform_data rb711gr100_nand_data __initdata = {
.gpio_nce = RB91X_GPIO_NAND_NCE,
.gpio_ale = RB91X_GPIO_NAND_ALE,
.gpio_cle = RB91X_GPIO_NAND_CLE,
.gpio_rdy = RB91X_GPIO_NAND_RDY,
.gpio_read = RB91X_GPIO_NAND_READ,
.gpio_nrw = RB91X_GPIO_NAND_NRW,
.gpio_nle = RB91X_GPIO_NLE,
};
static u8 rb711gr100_ssr_initdata[] __initdata = {
BIT(RB91X_SSR_BIT_PCIE_POWER) |
BIT(RB91X_SSR_BIT_USB_POWER) |
BIT(RB91X_SSR_BIT_5)
};
static struct gen_74x164_chip_platform_data rb711gr100_ssr_data = {
.base = RB91X_SSR_GPIO_BASE,
.num_registers = ARRAY_SIZE(rb711gr100_ssr_initdata),
.init_data = rb711gr100_ssr_initdata,
};
static struct ath79_spi_controller_data rb711gr100_spi0_cdata = {
.cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
.cs_line = 0,
.is_flash = true,
};
static struct ath79_spi_controller_data rb711gr100_spi1_cdata = {
.cs_type = ATH79_SPI_CS_TYPE_GPIO,
.cs_line = RB91X_GPIO_SSR_STROBE,
};
static struct spi_board_info rb711gr100_spi_info[] = {
{
.bus_num = 0,
.chip_select = 0,
.max_speed_hz = 25000000,
.modalias = "m25p80",
.platform_data = &rb711gr100_spi_flash_data,
.controller_data = &rb711gr100_spi0_cdata
}, {
.bus_num = 0,
.chip_select = 1,
.max_speed_hz = 10000000,
.modalias = "74x164",
.platform_data = &rb711gr100_ssr_data,
.controller_data = &rb711gr100_spi1_cdata
}
};
static struct ath79_spi_platform_data rb711gr100_spi_data __initdata = {
.bus_num = 0,
.num_chipselect = 2,
};
static struct gpio_led rb711gr100_leds[] __initdata = {
{
.name = "rb:green:led1",
.gpio = RB91X_GPIO_LED_1,
.active_low = 0,
},
{
.name = "rb:green:led2",
.gpio = RB91X_GPIO_LED_2,
.active_low = 0,
},
{
.name = "rb:green:led3",
.gpio = RB91X_GPIO_LED_3,
.active_low = 0,
},
{
.name = "rb:green:led4",
.gpio = RB91X_GPIO_LED_4,
.active_low = 0,
},
{
.name = "rb:green:led5",
.gpio = RB91X_GPIO_LED_5,
.active_low = 0,
},
{
.name = "rb:green:user",
.gpio = RB91X_GPIO_LED_USER,
.active_low = 0,
},
{
.name = "rb:green:power",
.gpio = RB91X_GPIO_LED_POWER,
.active_low = 0,
},
};
static struct at803x_platform_data rb91x_at803x_data = {
.disable_smarteee = 1,
.enable_rgmii_rx_delay = 1,
.enable_rgmii_tx_delay = 1,
};
static struct mdio_board_info rb91x_mdio0_info[] = {
{
.bus_id = "ag71xx-mdio.0",
.phy_addr = 0,
.platform_data = &rb91x_at803x_data,
},
};
static void __init rb711gr100_init_partitions(const struct rb_info *info)
{
rb711gr100_spi_partitions[0].size = info->hard_cfg_offs;
rb711gr100_spi_partitions[1].offset = info->hard_cfg_offs;
rb711gr100_spi_partitions[3].offset = info->soft_cfg_offs;
}
void __init rb711gr100_wlan_init(void)
{
char *caldata;
u8 wlan_mac[ETH_ALEN];
caldata = rb_get_wlan_data();
if (caldata == NULL)
return;
ath79_init_mac(wlan_mac, ath79_mac_base, 1);
ath79_register_wmac(caldata + 0x1000, wlan_mac);
kfree(caldata);
}
#define RB_BOARD_INFO(_name, _flags) \
{ \
.name = (_name), \
.flags = (_flags), \
}
static const struct rb_board_info rb711gr100_boards[] __initconst = {
RB_BOARD_INFO("911G-2HPnD", 0),
RB_BOARD_INFO("911G-5HPnD", 0),
RB_BOARD_INFO("912UAG-2HPnD", RB91X_FLAG_USB | RB91X_FLAG_PCIE),
RB_BOARD_INFO("912UAG-5HPnD", RB91X_FLAG_USB | RB91X_FLAG_PCIE),
};
static u32 rb711gr100_get_flags(const struct rb_info *info)
{
int i;
for (i = 0; i < ARRAY_SIZE(rb711gr100_boards); i++) {
const struct rb_board_info *bi;
bi = &rb711gr100_boards[i];
if (strcmp(info->board_name, bi->name) == 0)
return bi->flags;
}
return 0;
}
static void __init rb711gr100_setup(void)
{
const struct rb_info *info;
char buf[64];
u32 flags;
info = rb_init_info((void *) KSEG1ADDR(0x1f000000), 0x10000);
if (!info)
return;
scnprintf(buf, sizeof(buf), "Mikrotik RouterBOARD %s",
(info->board_name) ? info->board_name : "");
mips_set_machine_name(buf);
rb711gr100_init_partitions(info);
ath79_register_spi(&rb711gr100_spi_data, rb711gr100_spi_info,
ARRAY_SIZE(rb711gr100_spi_info));
ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_RGMII_GMAC0 |
AR934X_ETH_CFG_RXD_DELAY |
AR934X_ETH_CFG_SW_ONLY_MODE);
ath79_register_mdio(0, 0x0);
mdiobus_register_board_info(rb91x_mdio0_info,
ARRAY_SIZE(rb91x_mdio0_info));
ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
ath79_eth0_data.phy_mask = BIT(0);
ath79_eth0_pll_data.pll_1000 = 0x02000000;
ath79_register_eth(0);
rb711gr100_wlan_init();
platform_device_register_data(NULL, "rb91x-nand", -1,
&rb711gr100_nand_data,
sizeof(rb711gr100_nand_data));
platform_device_register_data(NULL, "gpio-latch", -1,
&rb711gr100_gpio_latch_data,
sizeof(rb711gr100_gpio_latch_data));
ath79_register_leds_gpio(-1, ARRAY_SIZE(rb711gr100_leds),
rb711gr100_leds);
flags = rb711gr100_get_flags(info);
if (flags & RB91X_FLAG_USB)
ath79_register_usb();
if (flags & RB91X_FLAG_PCIE)
ath79_register_pci();
}
MIPS_MACHINE_NONAME(ATH79_MACH_RB_711GR100, "711Gr100", rb711gr100_setup);
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