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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
*/
#include <common.h>
#include <linux/errno.h>
#include <asm/io.h>
#include <asm/addrspace.h>
#include <asm/types.h>
#include <mach/ath79.h>
#include <mach/ar71xx_regs.h>
void _machine_restart(void)
{
void __iomem *base;
u32 reg = 0;
base = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
MAP_NOCACHE);
if (soc_is_ar71xx())
reg = AR71XX_RESET_REG_RESET_MODULE;
else if (soc_is_ar724x())
reg = AR724X_RESET_REG_RESET_MODULE;
else if (soc_is_ar913x())
reg = AR913X_RESET_REG_RESET_MODULE;
else if (soc_is_ar933x())
reg = AR933X_RESET_REG_RESET_MODULE;
else if (soc_is_ar934x())
reg = AR934X_RESET_REG_RESET_MODULE;
else if (soc_is_qca953x())
reg = QCA953X_RESET_REG_RESET_MODULE;
else if (soc_is_qca955x())
reg = QCA955X_RESET_REG_RESET_MODULE;
else if (soc_is_qca956x())
reg = QCA956X_RESET_REG_RESET_MODULE;
else
puts("Reset register not defined for this SOC\n");
if (reg)
setbits_be32(base + reg, AR71XX_RESET_FULL_CHIP);
while (1)
/* NOP */;
}
u32 ath79_get_bootstrap(void)
{
void __iomem *base;
u32 reg = 0;
base = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
MAP_NOCACHE);
if (soc_is_ar933x())
reg = AR933X_RESET_REG_BOOTSTRAP;
else if (soc_is_ar934x())
reg = AR934X_RESET_REG_BOOTSTRAP;
else if (soc_is_qca953x())
reg = QCA953X_RESET_REG_BOOTSTRAP;
else if (soc_is_qca955x())
reg = QCA955X_RESET_REG_BOOTSTRAP;
else if (soc_is_qca956x())
reg = QCA956X_RESET_REG_BOOTSTRAP;
else
puts("Bootstrap register not defined for this SOC\n");
if (reg)
return readl(base + reg);
return 0;
}
static int eth_init_ar933x(void)
{
void __iomem *rregs = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
MAP_NOCACHE);
void __iomem *pregs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
MAP_NOCACHE);
void __iomem *gregs = map_physmem(AR933X_GMAC_BASE, AR933X_GMAC_SIZE,
MAP_NOCACHE);
const u32 mask = AR933X_RESET_GE0_MAC | AR933X_RESET_GE0_MDIO |
AR933X_RESET_GE1_MAC | AR933X_RESET_GE1_MDIO |
AR933X_RESET_ETH_SWITCH |
AR933X_RESET_ETH_SWITCH_ANALOG;
/* Clear MDIO slave EN bit. */
clrbits_be32(rregs + AR933X_RESET_REG_BOOTSTRAP, BIT(17));
mdelay(10);
/* Get Atheros S26 PHY out of reset. */
clrsetbits_be32(pregs + AR933X_PLL_SWITCH_CLOCK_CONTROL_REG,
0x1f, 0x10);
mdelay(10);
setbits_be32(rregs + AR933X_RESET_REG_RESET_MODULE, mask);
mdelay(10);
clrbits_be32(rregs + AR933X_RESET_REG_RESET_MODULE, mask);
mdelay(10);
/* Configure AR93xx GMAC register. */
clrsetbits_be32(gregs + AR933X_GMAC_REG_ETH_CFG,
AR933X_ETH_CFG_MII_GE0_MASTER |
AR933X_ETH_CFG_MII_GE0_SLAVE,
AR933X_ETH_CFG_MII_GE0_SLAVE);
return 0;
}
static int eth_init_ar934x(void)
{
void __iomem *rregs = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
MAP_NOCACHE);
void __iomem *pregs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
MAP_NOCACHE);
void __iomem *gregs = map_physmem(AR934X_GMAC_BASE, AR934X_GMAC_SIZE,
MAP_NOCACHE);
const u32 mask = AR934X_RESET_GE0_MAC | AR934X_RESET_GE0_MDIO |
AR934X_RESET_GE1_MAC | AR934X_RESET_GE1_MDIO |
AR934X_RESET_ETH_SWITCH_ANALOG;
u32 reg;
reg = readl(rregs + AR934X_RESET_REG_BOOTSTRAP);
if (reg & AR934X_BOOTSTRAP_REF_CLK_40)
writel(0x570, pregs + AR934X_PLL_SWITCH_CLOCK_CONTROL_REG);
else
writel(0x271, pregs + AR934X_PLL_SWITCH_CLOCK_CONTROL_REG);
writel(BIT(26) | BIT(25), pregs + AR934X_PLL_ETH_XMII_CONTROL_REG);
setbits_be32(rregs + AR934X_RESET_REG_RESET_MODULE, mask);
mdelay(1);
clrbits_be32(rregs + AR934X_RESET_REG_RESET_MODULE, mask);
mdelay(1);
/* Configure AR934x GMAC register. */
writel(AR934X_ETH_CFG_RGMII_GMAC0, gregs + AR934X_GMAC_REG_ETH_CFG);
return 0;
}
static int eth_init_qca953x(void)
{
void __iomem *rregs = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
MAP_NOCACHE);
const u32 mask = QCA953X_RESET_GE0_MAC | QCA953X_RESET_GE0_MDIO |
QCA953X_RESET_GE1_MAC | QCA953X_RESET_GE1_MDIO |
QCA953X_RESET_ETH_SWITCH_ANALOG |
QCA953X_RESET_ETH_SWITCH;
setbits_be32(rregs + AR934X_RESET_REG_RESET_MODULE, mask);
mdelay(1);
clrbits_be32(rregs + AR934X_RESET_REG_RESET_MODULE, mask);
mdelay(1);
return 0;
}
int ath79_eth_reset(void)
{
/*
* Un-reset ethernet. DM still doesn't have any notion of reset
* framework, so we do it by hand here.
*/
if (soc_is_ar933x())
return eth_init_ar933x();
if (soc_is_ar934x())
return eth_init_ar934x();
if (soc_is_qca953x())
return eth_init_qca953x();
return -EINVAL;
}
static int usb_reset_ar933x(void __iomem *reset_regs)
{
/* Ungate the USB block */
setbits_be32(reset_regs + AR933X_RESET_REG_RESET_MODULE,
AR933X_RESET_USBSUS_OVERRIDE);
mdelay(1);
clrbits_be32(reset_regs + AR933X_RESET_REG_RESET_MODULE,
AR933X_RESET_USB_HOST);
mdelay(1);
clrbits_be32(reset_regs + AR933X_RESET_REG_RESET_MODULE,
AR933X_RESET_USB_PHY);
mdelay(1);
return 0;
}
static int usb_reset_ar934x(void __iomem *reset_regs)
{
/* Ungate the USB block */
setbits_be32(reset_regs + AR934X_RESET_REG_RESET_MODULE,
AR934X_RESET_USBSUS_OVERRIDE);
mdelay(1);
clrbits_be32(reset_regs + AR934X_RESET_REG_RESET_MODULE,
AR934X_RESET_USB_PHY);
mdelay(1);
clrbits_be32(reset_regs + AR934X_RESET_REG_RESET_MODULE,
AR934X_RESET_USB_PHY_ANALOG);
mdelay(1);
clrbits_be32(reset_regs + AR934X_RESET_REG_RESET_MODULE,
AR934X_RESET_USB_HOST);
mdelay(1);
return 0;
}
static int usb_reset_qca953x(void __iomem *reset_regs)
{
void __iomem *pregs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
MAP_NOCACHE);
clrsetbits_be32(pregs + QCA953X_PLL_SWITCH_CLOCK_CONTROL_REG,
0xf00, 0x200);
mdelay(10);
/* Ungate the USB block */
setbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
QCA953X_RESET_USBSUS_OVERRIDE);
mdelay(1);
clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
QCA953X_RESET_USB_PHY);
mdelay(1);
clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
QCA953X_RESET_USB_PHY_ANALOG);
mdelay(1);
clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
QCA953X_RESET_USB_HOST);
mdelay(1);
clrbits_be32(reset_regs + QCA953X_RESET_REG_RESET_MODULE,
QCA953X_RESET_USB_PHY_PLL_PWD_EXT);
mdelay(1);
return 0;
}
int ath79_usb_reset(void)
{
void __iomem *usbc_regs = map_physmem(AR71XX_USB_CTRL_BASE,
AR71XX_USB_CTRL_SIZE,
MAP_NOCACHE);
void __iomem *reset_regs = map_physmem(AR71XX_RESET_BASE,
AR71XX_RESET_SIZE,
MAP_NOCACHE);
/*
* Turn on the Buff and Desc swap bits.
* NOTE: This write into an undocumented register in mandatory to
* get the USB controller operational in BigEndian mode.
*/
writel(0xf0000, usbc_regs + AR71XX_USB_CTRL_REG_CONFIG);
if (soc_is_ar933x())
return usb_reset_ar933x(reset_regs);
if (soc_is_ar934x())
return usb_reset_ar934x(reset_regs);
if (soc_is_qca953x())
return usb_reset_qca953x(reset_regs);
return -EINVAL;
}
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